Merge branch 'pm-cpufreq'

* pm-cpufreq: (41 commits)
  cpufreq: tegra: call CPUFREQ_POSTCHANGE notfier in error cases
  cpufreq: s3c64xx: call CPUFREQ_POSTCHANGE notfier in error cases
  cpufreq: omap: call CPUFREQ_POSTCHANGE notfier in error cases
  cpufreq: imx6q: call CPUFREQ_POSTCHANGE notfier in error cases
  cpufreq: exynos: call CPUFREQ_POSTCHANGE notfier in error cases
  cpufreq: dbx500: call CPUFREQ_POSTCHANGE notfier in error cases
  cpufreq: davinci: call CPUFREQ_POSTCHANGE notfier in error cases
  cpufreq: arm-big-little: call CPUFREQ_POSTCHANGE notfier in error cases
  cpufreq: powernow-k8: call CPUFREQ_POSTCHANGE notfier in error cases
  cpufreq: pcc: call CPUFREQ_POSTCHANGE notfier in error cases
  cpufreq: e_powersaver: call CPUFREQ_POSTCHANGE notfier in error cases
  cpufreq: ACPI: call CPUFREQ_POSTCHANGE notfier in error cases
  cpufreq: s3c2416: fix forgotten driver_data conversions
  cpufreq: make __cpufreq_notify_transition() static
  cpufreq: Fix minor formatting issues
  cpufreq: Fix governor start/stop race condition
  cpufreq: Simplify userspace governor
  cpufreq: X86_AMD_FREQ_SENSITIVITY: select CPU_FREQ_TABLE
  cpufreq: tegra: create CONFIG_ARM_TEGRA_CPUFREQ
  cpufreq: S3C2416/S3C64XX: select CPU_FREQ_TABLE
  ...

Documentation/cpu-freq/cpu-drivers.txt

@@ -186,7 +186,7 @@ As most cpufreq processors only allow for being set to a few specific
 frequencies, a "frequency table" with some functions might assist in
 some work of the processor driver. Such a "frequency table" consists
 of an array of struct cpufreq_frequency_table entries, with any value in
-"index" you want to use, and the corresponding frequency in
+"driver_data" you want to use, and the corresponding frequency in
 "frequency". At the end of the table, you need to add a
 cpufreq_frequency_table entry with frequency set to CPUFREQ_TABLE_END. And
 if you want to skip one entry in the table, set the frequency to 
@@ -214,10 +214,4 @@ int cpufreq_frequency_table_target(struct cpufreq_policy *policy,
 is the corresponding frequency table helper for the ->target
 stage. Just pass the values to this function, and the unsigned int
 index returns the number of the frequency table entry which contains
-the frequency the CPU shall be set to. PLEASE NOTE: This is not the
-"index" which is in this cpufreq_table_entry.index, but instead
-cpufreq_table[index]. So, the new frequency is
-cpufreq_table[index].frequency, and the value you stored into the
-frequency table "index" field is
-cpufreq_table[index].index.
-
+the frequency the CPU shall be set to.

MAINTAINERS

@@ -2218,7 +2218,8 @@ M:	Viresh Kumar <viresh.kumar@linaro.org>
 L:	cpufreq@vger.kernel.org
 L:	linux-pm@vger.kernel.org
 S:	Maintained
-T:	git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git
+T:	git git://git.linaro.org/people/vireshk/linux.git (For ARM Updates)
 F:	drivers/cpufreq/
 F:	include/linux/cpufreq.h
 

arch/arm/mach-davinci/Kconfig

@@ -40,6 +40,7 @@ config ARCH_DAVINCI_DA850
 	bool "DA850/OMAP-L138/AM18x based system"
 	select ARCH_DAVINCI_DA8XX
 	select ARCH_HAS_CPUFREQ
+	select CPU_FREQ_TABLE
 	select CP_INTC
 
 config ARCH_DAVINCI_DA8XX

arch/arm/mach-davinci/da850.c

@@ -1004,7 +1004,7 @@ static const struct da850_opp da850_opp_96 = {
 
 #define OPP(freq) 		\
 	{				\
-		.index = (unsigned int) &da850_opp_##freq,	\
+		.driver_data = (unsigned int) &da850_opp_##freq,	\
 		.frequency = freq * 1000, \
 	}
 
@@ -1016,7 +1016,7 @@ static struct cpufreq_frequency_table da850_freq_table[] = {
 	OPP(200),
 	OPP(96),
 	{
-		.index		= 0,
+		.driver_data		= 0,
 		.frequency	= CPUFREQ_TABLE_END,
 	},
 };
@@ -1044,7 +1044,7 @@ static int da850_set_voltage(unsigned int index)
 	if (!cvdd)
 		return -ENODEV;
 
-	opp = (struct da850_opp *) cpufreq_info.freq_table[index].index;
+	opp = (struct da850_opp *) cpufreq_info.freq_table[index].driver_data;
 
 	return regulator_set_voltage(cvdd, opp->cvdd_min, opp->cvdd_max);
 }
@@ -1125,7 +1125,7 @@ static int da850_set_pll0rate(struct clk *clk, unsigned long index)
 	struct pll_data *pll = clk->pll_data;
 	int ret;
 
-	opp = (struct da850_opp *) cpufreq_info.freq_table[index].index;
+	opp = (struct da850_opp *) cpufreq_info.freq_table[index].driver_data;
 	prediv = opp->prediv;
 	mult = opp->mult;
 	postdiv = opp->postdiv;

arch/arm/mach-pxa/Kconfig

@@ -615,12 +615,14 @@ endmenu
 config PXA25x
 	bool
 	select CPU_XSCALE
+	select CPU_FREQ_TABLE if CPU_FREQ
 	help
 	  Select code specific to PXA21x/25x/26x variants
 
 config PXA27x
 	bool
 	select CPU_XSCALE
+	select CPU_FREQ_TABLE if CPU_FREQ
 	help
 	  Select code specific to PXA27x variants
 
@@ -633,6 +635,7 @@ config CPU_PXA26x
 config PXA3xx
 	bool
 	select CPU_XSC3
+	select CPU_FREQ_TABLE if CPU_FREQ
 	help
 	  Select code specific to PXA3xx variants
 

arch/arm/mach-s3c24xx/cpufreq-utils.c

@@ -60,5 +60,5 @@ void s3c2410_cpufreq_setrefresh(struct s3c_cpufreq_config *cfg)
  */
 void s3c2410_set_fvco(struct s3c_cpufreq_config *cfg)
 {
-	__raw_writel(cfg->pll.index, S3C2410_MPLLCON);
+	__raw_writel(cfg->pll.driver_data, S3C2410_MPLLCON);
 }

arch/arm/mach-s3c24xx/cpufreq.c

@@ -70,7 +70,7 @@ static void s3c_cpufreq_getcur(struct s3c_cpufreq_config *cfg)
 	cfg->freq.pclk = pclk = clk_get_rate(clk_pclk);
 	cfg->freq.armclk = armclk = clk_get_rate(clk_arm);
 
-	cfg->pll.index = __raw_readl(S3C2410_MPLLCON);
+	cfg->pll.driver_data = __raw_readl(S3C2410_MPLLCON);
 	cfg->pll.frequency = fclk;
 
 	cfg->freq.hclk_tns = 1000000000 / (cfg->freq.hclk / 10);
@@ -431,7 +431,7 @@ static unsigned int suspend_freq;
 static int s3c_cpufreq_suspend(struct cpufreq_policy *policy)
 {
 	suspend_pll.frequency = clk_get_rate(_clk_mpll);
-	suspend_pll.index = __raw_readl(S3C2410_MPLLCON);
+	suspend_pll.driver_data = __raw_readl(S3C2410_MPLLCON);
 	suspend_freq = s3c_cpufreq_get(0) * 1000;
 
 	return 0;

arch/arm/mach-s3c24xx/pll-s3c2410.c

@@ -33,36 +33,36 @@
 #include <plat/cpu-freq-core.h>
 
 static struct cpufreq_frequency_table pll_vals_12MHz[] = {
-    { .frequency = 34000000,  .index = PLLVAL(82, 2, 3),   },
-    { .frequency = 45000000,  .index = PLLVAL(82, 1, 3),   },
-    { .frequency = 51000000,  .index = PLLVAL(161, 3, 3),  },
-    { .frequency = 48000000,  .index = PLLVAL(120, 2, 3),  },
-    { .frequency = 56000000,  .index = PLLVAL(142, 2, 3),  },
-    { .frequency = 68000000,  .index = PLLVAL(82, 2, 2),   },
-    { .frequency = 79000000,  .index = PLLVAL(71, 1, 2),   },
-    { .frequency = 85000000,  .index = PLLVAL(105, 2, 2),  },
-    { .frequency = 90000000,  .index = PLLVAL(112, 2, 2),  },
-    { .frequency = 101000000, .index = PLLVAL(127, 2, 2),  },
-    { .frequency = 113000000, .index = PLLVAL(105, 1, 2),  },
-    { .frequency = 118000000, .index = PLLVAL(150, 2, 2),  },
-    { .frequency = 124000000, .index = PLLVAL(116, 1, 2),  },
-    { .frequency = 135000000, .index = PLLVAL(82, 2, 1),   },
-    { .frequency = 147000000, .index = PLLVAL(90, 2, 1),   },
-    { .frequency = 152000000, .index = PLLVAL(68, 1, 1),   },
-    { .frequency = 158000000, .index = PLLVAL(71, 1, 1),   },
-    { .frequency = 170000000, .index = PLLVAL(77, 1, 1),   },
-    { .frequency = 180000000, .index = PLLVAL(82, 1, 1),   },
-    { .frequency = 186000000, .index = PLLVAL(85, 1, 1),   },
-    { .frequency = 192000000, .index = PLLVAL(88, 1, 1),   },
-    { .frequency = 203000000, .index = PLLVAL(161, 3, 1),  },
+    { .frequency = 34000000,  .driver_data = PLLVAL(82, 2, 3),   },
+    { .frequency = 45000000,  .driver_data = PLLVAL(82, 1, 3),   },
+    { .frequency = 51000000,  .driver_data = PLLVAL(161, 3, 3),  },
+    { .frequency = 48000000,  .driver_data = PLLVAL(120, 2, 3),  },
+    { .frequency = 56000000,  .driver_data = PLLVAL(142, 2, 3),  },
+    { .frequency = 68000000,  .driver_data = PLLVAL(82, 2, 2),   },
+    { .frequency = 79000000,  .driver_data = PLLVAL(71, 1, 2),   },
+    { .frequency = 85000000,  .driver_data = PLLVAL(105, 2, 2),  },
+    { .frequency = 90000000,  .driver_data = PLLVAL(112, 2, 2),  },
+    { .frequency = 101000000, .driver_data = PLLVAL(127, 2, 2),  },
+    { .frequency = 113000000, .driver_data = PLLVAL(105, 1, 2),  },
+    { .frequency = 118000000, .driver_data = PLLVAL(150, 2, 2),  },
+    { .frequency = 124000000, .driver_data = PLLVAL(116, 1, 2),  },
+    { .frequency = 135000000, .driver_data = PLLVAL(82, 2, 1),   },
+    { .frequency = 147000000, .driver_data = PLLVAL(90, 2, 1),   },
+    { .frequency = 152000000, .driver_data = PLLVAL(68, 1, 1),   },
+    { .frequency = 158000000, .driver_data = PLLVAL(71, 1, 1),   },
+    { .frequency = 170000000, .driver_data = PLLVAL(77, 1, 1),   },
+    { .frequency = 180000000, .driver_data = PLLVAL(82, 1, 1),   },
+    { .frequency = 186000000, .driver_data = PLLVAL(85, 1, 1),   },
+    { .frequency = 192000000, .driver_data = PLLVAL(88, 1, 1),   },
+    { .frequency = 203000000, .driver_data = PLLVAL(161, 3, 1),  },
 
     /* 2410A extras */
 
-    { .frequency = 210000000, .index = PLLVAL(132, 2, 1),  },
-    { .frequency = 226000000, .index = PLLVAL(105, 1, 1),  },
-    { .frequency = 266000000, .index = PLLVAL(125, 1, 1),  },
-    { .frequency = 268000000, .index = PLLVAL(126, 1, 1),  },
-    { .frequency = 270000000, .index = PLLVAL(127, 1, 1),  },
+    { .frequency = 210000000, .driver_data = PLLVAL(132, 2, 1),  },
+    { .frequency = 226000000, .driver_data = PLLVAL(105, 1, 1),  },
+    { .frequency = 266000000, .driver_data = PLLVAL(125, 1, 1),  },
+    { .frequency = 268000000, .driver_data = PLLVAL(126, 1, 1),  },
+    { .frequency = 270000000, .driver_data = PLLVAL(127, 1, 1),  },
 };
 
 static int s3c2410_plls_add(struct device *dev, struct subsys_interface *sif)

arch/arm/mach-s3c24xx/pll-s3c2440-12000000.c

@@ -21,33 +21,33 @@
 #include <plat/cpu-freq-core.h>
 
 static struct cpufreq_frequency_table s3c2440_plls_12[] __initdata = {
-	{ .frequency = 75000000,	.index = PLLVAL(0x75, 3, 3),  }, 	/* FVco 600.000000 */
-	{ .frequency = 80000000,	.index = PLLVAL(0x98, 4, 3),  }, 	/* FVco 640.000000 */
-	{ .frequency = 90000000,	.index = PLLVAL(0x70, 2, 3),  }, 	/* FVco 720.000000 */
-	{ .frequency = 100000000,	.index = PLLVAL(0x5c, 1, 3),  }, 	/* FVco 800.000000 */
-	{ .frequency = 110000000,	.index = PLLVAL(0x66, 1, 3),  }, 	/* FVco 880.000000 */
-	{ .frequency = 120000000,	.index = PLLVAL(0x70, 1, 3),  }, 	/* FVco 960.000000 */
-	{ .frequency = 150000000,	.index = PLLVAL(0x75, 3, 2),  }, 	/* FVco 600.000000 */
-	{ .frequency = 160000000,	.index = PLLVAL(0x98, 4, 2),  }, 	/* FVco 640.000000 */
-	{ .frequency = 170000000,	.index = PLLVAL(0x4d, 1, 2),  }, 	/* FVco 680.000000 */
-	{ .frequency = 180000000,	.index = PLLVAL(0x70, 2, 2),  }, 	/* FVco 720.000000 */
-	{ .frequency = 190000000,	.index = PLLVAL(0x57, 1, 2),  }, 	/* FVco 760.000000 */
-	{ .frequency = 200000000,	.index = PLLVAL(0x5c, 1, 2),  }, 	/* FVco 800.000000 */
-	{ .frequency = 210000000,	.index = PLLVAL(0x84, 2, 2),  }, 	/* FVco 840.000000 */
-	{ .frequency = 220000000,	.index = PLLVAL(0x66, 1, 2),  }, 	/* FVco 880.000000 */
-	{ .frequency = 230000000,	.index = PLLVAL(0x6b, 1, 2),  }, 	/* FVco 920.000000 */
-	{ .frequency = 240000000,	.index = PLLVAL(0x70, 1, 2),  }, 	/* FVco 960.000000 */
-	{ .frequency = 300000000,	.index = PLLVAL(0x75, 3, 1),  }, 	/* FVco 600.000000 */
-	{ .frequency = 310000000,	.index = PLLVAL(0x93, 4, 1),  }, 	/* FVco 620.000000 */
-	{ .frequency = 320000000,	.index = PLLVAL(0x98, 4, 1),  }, 	/* FVco 640.000000 */
-	{ .frequency = 330000000,	.index = PLLVAL(0x66, 2, 1),  }, 	/* FVco 660.000000 */
-	{ .frequency = 340000000,	.index = PLLVAL(0x4d, 1, 1),  }, 	/* FVco 680.000000 */
-	{ .frequency = 350000000,	.index = PLLVAL(0xa7, 4, 1),  }, 	/* FVco 700.000000 */
-	{ .frequency = 360000000,	.index = PLLVAL(0x70, 2, 1),  }, 	/* FVco 720.000000 */
-	{ .frequency = 370000000,	.index = PLLVAL(0xb1, 4, 1),  }, 	/* FVco 740.000000 */
-	{ .frequency = 380000000,	.index = PLLVAL(0x57, 1, 1),  }, 	/* FVco 760.000000 */
-	{ .frequency = 390000000,	.index = PLLVAL(0x7a, 2, 1),  }, 	/* FVco 780.000000 */
-	{ .frequency = 400000000,	.index = PLLVAL(0x5c, 1, 1),  }, 	/* FVco 800.000000 */
+	{ .frequency = 75000000,	.driver_data = PLLVAL(0x75, 3, 3),  }, 	/* FVco 600.000000 */
+	{ .frequency = 80000000,	.driver_data = PLLVAL(0x98, 4, 3),  }, 	/* FVco 640.000000 */
+	{ .frequency = 90000000,	.driver_data = PLLVAL(0x70, 2, 3),  }, 	/* FVco 720.000000 */
+	{ .frequency = 100000000,	.driver_data = PLLVAL(0x5c, 1, 3),  }, 	/* FVco 800.000000 */
+	{ .frequency = 110000000,	.driver_data = PLLVAL(0x66, 1, 3),  }, 	/* FVco 880.000000 */
+	{ .frequency = 120000000,	.driver_data = PLLVAL(0x70, 1, 3),  }, 	/* FVco 960.000000 */
+	{ .frequency = 150000000,	.driver_data = PLLVAL(0x75, 3, 2),  }, 	/* FVco 600.000000 */
+	{ .frequency = 160000000,	.driver_data = PLLVAL(0x98, 4, 2),  }, 	/* FVco 640.000000 */
+	{ .frequency = 170000000,	.driver_data = PLLVAL(0x4d, 1, 2),  }, 	/* FVco 680.000000 */
+	{ .frequency = 180000000,	.driver_data = PLLVAL(0x70, 2, 2),  }, 	/* FVco 720.000000 */
+	{ .frequency = 190000000,	.driver_data = PLLVAL(0x57, 1, 2),  }, 	/* FVco 760.000000 */
+	{ .frequency = 200000000,	.driver_data = PLLVAL(0x5c, 1, 2),  }, 	/* FVco 800.000000 */
+	{ .frequency = 210000000,	.driver_data = PLLVAL(0x84, 2, 2),  }, 	/* FVco 840.000000 */
+	{ .frequency = 220000000,	.driver_data = PLLVAL(0x66, 1, 2),  }, 	/* FVco 880.000000 */
+	{ .frequency = 230000000,	.driver_data = PLLVAL(0x6b, 1, 2),  }, 	/* FVco 920.000000 */
+	{ .frequency = 240000000,	.driver_data = PLLVAL(0x70, 1, 2),  }, 	/* FVco 960.000000 */
+	{ .frequency = 300000000,	.driver_data = PLLVAL(0x75, 3, 1),  }, 	/* FVco 600.000000 */
+	{ .frequency = 310000000,	.driver_data = PLLVAL(0x93, 4, 1),  }, 	/* FVco 620.000000 */
+	{ .frequency = 320000000,	.driver_data = PLLVAL(0x98, 4, 1),  }, 	/* FVco 640.000000 */
+	{ .frequency = 330000000,	.driver_data = PLLVAL(0x66, 2, 1),  }, 	/* FVco 660.000000 */
+	{ .frequency = 340000000,	.driver_data = PLLVAL(0x4d, 1, 1),  }, 	/* FVco 680.000000 */
+	{ .frequency = 350000000,	.driver_data = PLLVAL(0xa7, 4, 1),  }, 	/* FVco 700.000000 */
+	{ .frequency = 360000000,	.driver_data = PLLVAL(0x70, 2, 1),  }, 	/* FVco 720.000000 */
+	{ .frequency = 370000000,	.driver_data = PLLVAL(0xb1, 4, 1),  }, 	/* FVco 740.000000 */
+	{ .frequency = 380000000,	.driver_data = PLLVAL(0x57, 1, 1),  }, 	/* FVco 760.000000 */
+	{ .frequency = 390000000,	.driver_data = PLLVAL(0x7a, 2, 1),  }, 	/* FVco 780.000000 */
+	{ .frequency = 400000000,	.driver_data = PLLVAL(0x5c, 1, 1),  }, 	/* FVco 800.000000 */
 };
 
 static int s3c2440_plls12_add(struct device *dev, struct subsys_interface *sif)

arch/arm/mach-s3c24xx/pll-s3c2440-16934400.c

@@ -21,61 +21,61 @@
 #include <plat/cpu-freq-core.h>
 
 static struct cpufreq_frequency_table s3c2440_plls_169344[] __initdata = {
-	{ .frequency = 78019200,	.index = PLLVAL(121, 5, 3), 	}, 	/* FVco 624.153600 */
-	{ .frequency = 84067200,	.index = PLLVAL(131, 5, 3), 	}, 	/* FVco 672.537600 */
-	{ .frequency = 90115200,	.index = PLLVAL(141, 5, 3), 	}, 	/* FVco 720.921600 */
-	{ .frequency = 96163200,	.index = PLLVAL(151, 5, 3), 	}, 	/* FVco 769.305600 */
-	{ .frequency = 102135600,	.index = PLLVAL(185, 6, 3), 	}, 	/* FVco 817.084800 */
-	{ .frequency = 108259200,	.index = PLLVAL(171, 5, 3), 	}, 	/* FVco 866.073600 */
-	{ .frequency = 114307200,	.index = PLLVAL(127, 3, 3), 	}, 	/* FVco 914.457600 */
-	{ .frequency = 120234240,	.index = PLLVAL(134, 3, 3), 	}, 	/* FVco 961.873920 */
-	{ .frequency = 126161280,	.index = PLLVAL(141, 3, 3), 	}, 	/* FVco 1009.290240 */
-	{ .frequency = 132088320,	.index = PLLVAL(148, 3, 3), 	}, 	/* FVco 1056.706560 */
-	{ .frequency = 138015360,	.index = PLLVAL(155, 3, 3), 	}, 	/* FVco 1104.122880 */
-	{ .frequency = 144789120,	.index = PLLVAL(163, 3, 3), 	}, 	/* FVco 1158.312960 */
-	{ .frequency = 150100363,	.index = PLLVAL(187, 9, 2), 	}, 	/* FVco 600.401454 */
-	{ .frequency = 156038400,	.index = PLLVAL(121, 5, 2), 	}, 	/* FVco 624.153600 */
-	{ .frequency = 162086400,	.index = PLLVAL(126, 5, 2), 	}, 	/* FVco 648.345600 */
-	{ .frequency = 168134400,	.index = PLLVAL(131, 5, 2), 	}, 	/* FVco 672.537600 */
-	{ .frequency = 174048000,	.index = PLLVAL(177, 7, 2), 	}, 	/* FVco 696.192000 */
-	{ .frequency = 180230400,	.index = PLLVAL(141, 5, 2), 	}, 	/* FVco 720.921600 */
-	{ .frequency = 186278400,	.index = PLLVAL(124, 4, 2), 	}, 	/* FVco 745.113600 */
-	{ .frequency = 192326400,	.index = PLLVAL(151, 5, 2), 	}, 	/* FVco 769.305600 */
-	{ .frequency = 198132480,	.index = PLLVAL(109, 3, 2), 	}, 	/* FVco 792.529920 */
-	{ .frequency = 204271200,	.index = PLLVAL(185, 6, 2), 	}, 	/* FVco 817.084800 */
-	{ .frequency = 210268800,	.index = PLLVAL(141, 4, 2), 	}, 	/* FVco 841.075200 */
-	{ .frequency = 216518400,	.index = PLLVAL(171, 5, 2), 	}, 	/* FVco 866.073600 */
-	{ .frequency = 222264000,	.index = PLLVAL(97, 2, 2), 	}, 	/* FVco 889.056000 */
-	{ .frequency = 228614400,	.index = PLLVAL(127, 3, 2), 	}, 	/* FVco 914.457600 */
-	{ .frequency = 234259200,	.index = PLLVAL(158, 4, 2), 	}, 	/* FVco 937.036800 */
-	{ .frequency = 240468480,	.index = PLLVAL(134, 3, 2), 	}, 	/* FVco 961.873920 */
-	{ .frequency = 246960000,	.index = PLLVAL(167, 4, 2), 	}, 	/* FVco 987.840000 */
-	{ .frequency = 252322560,	.index = PLLVAL(141, 3, 2), 	}, 	/* FVco 1009.290240 */
-	{ .frequency = 258249600,	.index = PLLVAL(114, 2, 2), 	}, 	/* FVco 1032.998400 */
-	{ .frequency = 264176640,	.index = PLLVAL(148, 3, 2), 	}, 	/* FVco 1056.706560 */
-	{ .frequency = 270950400,	.index = PLLVAL(120, 2, 2), 	}, 	/* FVco 1083.801600 */
-	{ .frequency = 276030720,	.index = PLLVAL(155, 3, 2), 	}, 	/* FVco 1104.122880 */
-	{ .frequency = 282240000,	.index = PLLVAL(92, 1, 2), 	}, 	/* FVco 1128.960000 */
-	{ .frequency = 289578240,	.index = PLLVAL(163, 3, 2), 	}, 	/* FVco 1158.312960 */
-	{ .frequency = 294235200,	.index = PLLVAL(131, 2, 2), 	}, 	/* FVco 1176.940800 */
-	{ .frequency = 300200727,	.index = PLLVAL(187, 9, 1), 	}, 	/* FVco 600.401454 */
-	{ .frequency = 306358690,	.index = PLLVAL(191, 9, 1), 	}, 	/* FVco 612.717380 */
-	{ .frequency = 312076800,	.index = PLLVAL(121, 5, 1), 	}, 	/* FVco 624.153600 */
-	{ .frequency = 318366720,	.index = PLLVAL(86, 3, 1), 	}, 	/* FVco 636.733440 */
-	{ .frequency = 324172800,	.index = PLLVAL(126, 5, 1), 	}, 	/* FVco 648.345600 */
-	{ .frequency = 330220800,	.index = PLLVAL(109, 4, 1), 	}, 	/* FVco 660.441600 */
-	{ .frequency = 336268800,	.index = PLLVAL(131, 5, 1), 	}, 	/* FVco 672.537600 */
-	{ .frequency = 342074880,	.index = PLLVAL(93, 3, 1), 	}, 	/* FVco 684.149760 */
-	{ .frequency = 348096000,	.index = PLLVAL(177, 7, 1), 	}, 	/* FVco 696.192000 */
-	{ .frequency = 355622400,	.index = PLLVAL(118, 4, 1), 	}, 	/* FVco 711.244800 */
-	{ .frequency = 360460800,	.index = PLLVAL(141, 5, 1), 	}, 	/* FVco 720.921600 */
-	{ .frequency = 366206400,	.index = PLLVAL(165, 6, 1), 	}, 	/* FVco 732.412800 */
-	{ .frequency = 372556800,	.index = PLLVAL(124, 4, 1), 	}, 	/* FVco 745.113600 */
-	{ .frequency = 378201600,	.index = PLLVAL(126, 4, 1), 	}, 	/* FVco 756.403200 */
-	{ .frequency = 384652800,	.index = PLLVAL(151, 5, 1), 	}, 	/* FVco 769.305600 */
-	{ .frequency = 391608000,	.index = PLLVAL(177, 6, 1), 	}, 	/* FVco 783.216000 */
-	{ .frequency = 396264960,	.index = PLLVAL(109, 3, 1), 	}, 	/* FVco 792.529920 */
-	{ .frequency = 402192000,	.index = PLLVAL(87, 2, 1), 	}, 	/* FVco 804.384000 */
+	{ .frequency = 78019200,	.driver_data = PLLVAL(121, 5, 3), 	}, 	/* FVco 624.153600 */
+	{ .frequency = 84067200,	.driver_data = PLLVAL(131, 5, 3), 	}, 	/* FVco 672.537600 */
+	{ .frequency = 90115200,	.driver_data = PLLVAL(141, 5, 3), 	}, 	/* FVco 720.921600 */
+	{ .frequency = 96163200,	.driver_data = PLLVAL(151, 5, 3), 	}, 	/* FVco 769.305600 */
+	{ .frequency = 102135600,	.driver_data = PLLVAL(185, 6, 3), 	}, 	/* FVco 817.084800 */
+	{ .frequency = 108259200,	.driver_data = PLLVAL(171, 5, 3), 	}, 	/* FVco 866.073600 */
+	{ .frequency = 114307200,	.driver_data = PLLVAL(127, 3, 3), 	}, 	/* FVco 914.457600 */
+	{ .frequency = 120234240,	.driver_data = PLLVAL(134, 3, 3), 	}, 	/* FVco 961.873920 */
+	{ .frequency = 126161280,	.driver_data = PLLVAL(141, 3, 3), 	}, 	/* FVco 1009.290240 */
+	{ .frequency = 132088320,	.driver_data = PLLVAL(148, 3, 3), 	}, 	/* FVco 1056.706560 */
+	{ .frequency = 138015360,	.driver_data = PLLVAL(155, 3, 3), 	}, 	/* FVco 1104.122880 */
+	{ .frequency = 144789120,	.driver_data = PLLVAL(163, 3, 3), 	}, 	/* FVco 1158.312960 */
+	{ .frequency = 150100363,	.driver_data = PLLVAL(187, 9, 2), 	}, 	/* FVco 600.401454 */
+	{ .frequency = 156038400,	.driver_data = PLLVAL(121, 5, 2), 	}, 	/* FVco 624.153600 */
+	{ .frequency = 162086400,	.driver_data = PLLVAL(126, 5, 2), 	}, 	/* FVco 648.345600 */
+	{ .frequency = 168134400,	.driver_data = PLLVAL(131, 5, 2), 	}, 	/* FVco 672.537600 */
+	{ .frequency = 174048000,	.driver_data = PLLVAL(177, 7, 2), 	}, 	/* FVco 696.192000 */
+	{ .frequency = 180230400,	.driver_data = PLLVAL(141, 5, 2), 	}, 	/* FVco 720.921600 */
+	{ .frequency = 186278400,	.driver_data = PLLVAL(124, 4, 2), 	}, 	/* FVco 745.113600 */
+	{ .frequency = 192326400,	.driver_data = PLLVAL(151, 5, 2), 	}, 	/* FVco 769.305600 */
+	{ .frequency = 198132480,	.driver_data = PLLVAL(109, 3, 2), 	}, 	/* FVco 792.529920 */
+	{ .frequency = 204271200,	.driver_data = PLLVAL(185, 6, 2), 	}, 	/* FVco 817.084800 */
+	{ .frequency = 210268800,	.driver_data = PLLVAL(141, 4, 2), 	}, 	/* FVco 841.075200 */
+	{ .frequency = 216518400,	.driver_data = PLLVAL(171, 5, 2), 	}, 	/* FVco 866.073600 */
+	{ .frequency = 222264000,	.driver_data = PLLVAL(97, 2, 2), 	}, 	/* FVco 889.056000 */
+	{ .frequency = 228614400,	.driver_data = PLLVAL(127, 3, 2), 	}, 	/* FVco 914.457600 */
+	{ .frequency = 234259200,	.driver_data = PLLVAL(158, 4, 2), 	}, 	/* FVco 937.036800 */
+	{ .frequency = 240468480,	.driver_data = PLLVAL(134, 3, 2), 	}, 	/* FVco 961.873920 */
+	{ .frequency = 246960000,	.driver_data = PLLVAL(167, 4, 2), 	}, 	/* FVco 987.840000 */
+	{ .frequency = 252322560,	.driver_data = PLLVAL(141, 3, 2), 	}, 	/* FVco 1009.290240 */
+	{ .frequency = 258249600,	.driver_data = PLLVAL(114, 2, 2), 	}, 	/* FVco 1032.998400 */
+	{ .frequency = 264176640,	.driver_data = PLLVAL(148, 3, 2), 	}, 	/* FVco 1056.706560 */
+	{ .frequency = 270950400,	.driver_data = PLLVAL(120, 2, 2), 	}, 	/* FVco 1083.801600 */
+	{ .frequency = 276030720,	.driver_data = PLLVAL(155, 3, 2), 	}, 	/* FVco 1104.122880 */
+	{ .frequency = 282240000,	.driver_data = PLLVAL(92, 1, 2), 	}, 	/* FVco 1128.960000 */
+	{ .frequency = 289578240,	.driver_data = PLLVAL(163, 3, 2), 	}, 	/* FVco 1158.312960 */
+	{ .frequency = 294235200,	.driver_data = PLLVAL(131, 2, 2), 	}, 	/* FVco 1176.940800 */
+	{ .frequency = 300200727,	.driver_data = PLLVAL(187, 9, 1), 	}, 	/* FVco 600.401454 */
+	{ .frequency = 306358690,	.driver_data = PLLVAL(191, 9, 1), 	}, 	/* FVco 612.717380 */
+	{ .frequency = 312076800,	.driver_data = PLLVAL(121, 5, 1), 	}, 	/* FVco 624.153600 */
+	{ .frequency = 318366720,	.driver_data = PLLVAL(86, 3, 1), 	}, 	/* FVco 636.733440 */
+	{ .frequency = 324172800,	.driver_data = PLLVAL(126, 5, 1), 	}, 	/* FVco 648.345600 */
+	{ .frequency = 330220800,	.driver_data = PLLVAL(109, 4, 1), 	}, 	/* FVco 660.441600 */
+	{ .frequency = 336268800,	.driver_data = PLLVAL(131, 5, 1), 	}, 	/* FVco 672.537600 */
+	{ .frequency = 342074880,	.driver_data = PLLVAL(93, 3, 1), 	}, 	/* FVco 684.149760 */
+	{ .frequency = 348096000,	.driver_data = PLLVAL(177, 7, 1), 	}, 	/* FVco 696.192000 */
+	{ .frequency = 355622400,	.driver_data = PLLVAL(118, 4, 1), 	}, 	/* FVco 711.244800 */
+	{ .frequency = 360460800,	.driver_data = PLLVAL(141, 5, 1), 	}, 	/* FVco 720.921600 */
+	{ .frequency = 366206400,	.driver_data = PLLVAL(165, 6, 1), 	}, 	/* FVco 732.412800 */
+	{ .frequency = 372556800,	.driver_data = PLLVAL(124, 4, 1), 	}, 	/* FVco 745.113600 */
+	{ .frequency = 378201600,	.driver_data = PLLVAL(126, 4, 1), 	}, 	/* FVco 756.403200 */
+	{ .frequency = 384652800,	.driver_data = PLLVAL(151, 5, 1), 	}, 	/* FVco 769.305600 */
+	{ .frequency = 391608000,	.driver_data = PLLVAL(177, 6, 1), 	}, 	/* FVco 783.216000 */
+	{ .frequency = 396264960,	.driver_data = PLLVAL(109, 3, 1), 	}, 	/* FVco 792.529920 */
+	{ .frequency = 402192000,	.driver_data = PLLVAL(87, 2, 1), 	}, 	/* FVco 804.384000 */
 };
 
 static int s3c2440_plls169344_add(struct device *dev,

arch/arm/mach-shmobile/clock-sh7372.c

@@ -142,15 +142,15 @@ static void pllc2_table_rebuild(struct clk *clk)
 	/* Initialise PLLC2 frequency table */
 	for (i = 0; i < ARRAY_SIZE(pllc2_freq_table) - 2; i++) {
 		pllc2_freq_table[i].frequency = clk->parent->rate * (i + 20) * 2;
-		pllc2_freq_table[i].index = i;
+		pllc2_freq_table[i].driver_data = i;
 	}
 
 	/* This is a special entry - switching PLL off makes it a repeater */
 	pllc2_freq_table[i].frequency = clk->parent->rate;
-	pllc2_freq_table[i].index = i;
+	pllc2_freq_table[i].driver_data = i;
 
 	pllc2_freq_table[++i].frequency = CPUFREQ_TABLE_END;
-	pllc2_freq_table[i].index = i;
+	pllc2_freq_table[i].driver_data = i;
 }
 
 static unsigned long pllc2_recalc(struct clk *clk)

arch/arm/mach-tegra/Kconfig

@@ -28,7 +28,6 @@ config ARCH_TEGRA_2x_SOC
 	select ARM_ERRATA_754327 if SMP
 	select ARM_ERRATA_764369 if SMP
 	select ARM_GIC
-	select CPU_FREQ_TABLE if CPU_FREQ
 	select CPU_V7
 	select PINCTRL
 	select PINCTRL_TEGRA20
@@ -46,7 +45,6 @@ config ARCH_TEGRA_3x_SOC
 	select ARM_ERRATA_754322
 	select ARM_ERRATA_764369 if SMP
 	select ARM_GIC
-	select CPU_FREQ_TABLE if CPU_FREQ
 	select CPU_V7
 	select PINCTRL
 	select PINCTRL_TEGRA30
@@ -63,7 +61,6 @@ config ARCH_TEGRA_114_SOC
 	select ARM_ARCH_TIMER
 	select ARM_GIC
 	select ARM_L1_CACHE_SHIFT_6
-	select CPU_FREQ_TABLE if CPU_FREQ
 	select CPU_V7
 	select PINCTRL
 	select PINCTRL_TEGRA114

arch/arm/plat-samsung/include/plat/cpu-freq-core.h

@@ -285,7 +285,7 @@ static inline int s3c_cpufreq_addfreq(struct cpufreq_frequency_table *table,
 		s3c_freq_dbg("%s: { %d = %u kHz }\n",
 			     __func__, index, freq);
 
-		table[index].index = index;
+		table[index].driver_data = index;
 		table[index].frequency = freq;
 	}
 

arch/cris/Kconfig

@@ -134,11 +134,13 @@ config SVINTO_SIM
 
 config ETRAXFS
 	bool "ETRAX-FS-V32"
+	select CPU_FREQ_TABLE if CPU_FREQ
 	help
 	  Support CRIS V32.
 
 config CRIS_MACH_ARTPEC3
         bool "ARTPEC-3"
+	select CPU_FREQ_TABLE if CPU_FREQ
         help
           Support Axis ARTPEC-3.
 

arch/mips/loongson/lemote-2f/clock.c

@@ -121,7 +121,8 @@ int clk_set_rate(struct clk *clk, unsigned long rate)
 	clk->rate = rate;
 
 	regval = LOONGSON_CHIPCFG0;
-	regval = (regval & ~0x7) | (loongson2_clockmod_table[i].index - 1);
+	regval = (regval & ~0x7) |
+		(loongson2_clockmod_table[i].driver_data - 1);
 	LOONGSON_CHIPCFG0 = regval;
 
 	return ret;

arch/powerpc/platforms/Kconfig

@@ -193,37 +193,6 @@ config PPC_IO_WORKAROUNDS
 
 source "drivers/cpufreq/Kconfig"
 
-menu "CPU Frequency drivers"
-	depends on CPU_FREQ
-
-config CPU_FREQ_PMAC
-	bool "Support for Apple PowerBooks"
-	depends on ADB_PMU && PPC32
-	select CPU_FREQ_TABLE
-	help
-	  This adds support for frequency switching on Apple PowerBooks,
-	  this currently includes some models of iBook & Titanium
-	  PowerBook.
-
-config CPU_FREQ_PMAC64
-	bool "Support for some Apple G5s"
-	depends on PPC_PMAC && PPC64
-	select CPU_FREQ_TABLE
-	help
-	  This adds support for frequency switching on Apple iMac G5,
-	  and some of the more recent desktop G5 machines as well.
-
-config PPC_PASEMI_CPUFREQ
-	bool "Support for PA Semi PWRficient"
-	depends on PPC_PASEMI
-	default y
-	select CPU_FREQ_TABLE
-	help
-	  This adds the support for frequency switching on PA Semi
-	  PWRficient processors.
-
-endmenu
-
 menu "CPUIdle driver"
 
 source "drivers/cpuidle/Kconfig"

arch/powerpc/platforms/pasemi/Makefile

@@ -1,3 +1,2 @@
 obj-y	+= setup.o pci.o time.o idle.o powersave.o iommu.o dma_lib.o misc.o
 obj-$(CONFIG_PPC_PASEMI_MDIO)	+= gpio_mdio.o
-obj-$(CONFIG_PPC_PASEMI_CPUFREQ) += cpufreq.o

arch/powerpc/platforms/powermac/Makefile

@@ -9,8 +9,6 @@ obj-y				+= pic.o setup.o time.o feature.o pci.o \
 				   sleep.o low_i2c.o cache.o pfunc_core.o \
 				   pfunc_base.o udbg_scc.o udbg_adb.o
 obj-$(CONFIG_PMAC_BACKLIGHT)	+= backlight.o
-obj-$(CONFIG_CPU_FREQ_PMAC)	+= cpufreq_32.o
-obj-$(CONFIG_CPU_FREQ_PMAC64)	+= cpufreq_64.o
 # CONFIG_NVRAM is an arch. independent tristate symbol, for pmac32 we really
 # need this to be a bool.  Cheat here and pretend CONFIG_NVRAM=m is really
 # CONFIG_NVRAM=y

drivers/base/power/opp.c

@@ -648,14 +648,14 @@ int opp_init_cpufreq_table(struct device *dev,
 
 	list_for_each_entry(opp, &dev_opp->opp_list, node) {
 		if (opp->available) {
-			freq_table[i].index = i;
+			freq_table[i].driver_data = i;
 			freq_table[i].frequency = opp->rate / 1000;
 			i++;
 		}
 	}
 	mutex_unlock(&dev_opp_list_lock);
 
-	freq_table[i].index = i;
+	freq_table[i].driver_data = i;
 	freq_table[i].frequency = CPUFREQ_TABLE_END;
 
 	*table = &freq_table[0];

drivers/cpufreq/Kconfig.arm

@@ -5,6 +5,7 @@
 config ARM_BIG_LITTLE_CPUFREQ
 	tristate "Generic ARM big LITTLE CPUfreq driver"
 	depends on ARM_CPU_TOPOLOGY && PM_OPP && HAVE_CLK
+	select CPU_FREQ_TABLE
 	help
 	  This enables the Generic CPUfreq driver for ARM big.LITTLE platforms.
 
@@ -18,6 +19,7 @@ config ARM_DT_BL_CPUFREQ
 config ARM_EXYNOS_CPUFREQ
 	bool "SAMSUNG EXYNOS SoCs"
 	depends on ARCH_EXYNOS
+	select CPU_FREQ_TABLE
 	default y
 	help
 	  This adds the CPUFreq driver common part for Samsung
@@ -46,6 +48,7 @@ config ARM_EXYNOS5250_CPUFREQ
 config ARM_EXYNOS5440_CPUFREQ
 	def_bool SOC_EXYNOS5440
 	depends on HAVE_CLK && PM_OPP && OF
+	select CPU_FREQ_TABLE
 	help
 	  This adds the CPUFreq driver for Samsung EXYNOS5440
 	  SoC. The nature of exynos5440 clock controller is
@@ -55,7 +58,6 @@ config ARM_EXYNOS5440_CPUFREQ
 config ARM_HIGHBANK_CPUFREQ
 	tristate "Calxeda Highbank-based"
 	depends on ARCH_HIGHBANK
-	select CPU_FREQ_TABLE
 	select GENERIC_CPUFREQ_CPU0
 	select PM_OPP
 	select REGULATOR
@@ -71,6 +73,7 @@ config ARM_IMX6Q_CPUFREQ
 	tristate "Freescale i.MX6Q cpufreq support"
 	depends on SOC_IMX6Q
 	depends on REGULATOR_ANATOP
+	select CPU_FREQ_TABLE
 	help
 	  This adds cpufreq driver support for Freescale i.MX6Q SOC.
 
@@ -86,6 +89,7 @@ config ARM_INTEGRATOR
 
 config ARM_KIRKWOOD_CPUFREQ
 	def_bool ARCH_KIRKWOOD && OF
+	select CPU_FREQ_TABLE
 	help
 	  This adds the CPUFreq driver for Marvell Kirkwood
 	  SoCs.
@@ -99,6 +103,7 @@ config ARM_OMAP2PLUS_CPUFREQ
 config ARM_S3C2416_CPUFREQ
 	bool "S3C2416 CPU Frequency scaling support"
 	depends on CPU_S3C2416
+	select CPU_FREQ_TABLE
 	help
 	  This adds the CPUFreq driver for the Samsung S3C2416 and
 	  S3C2450 SoC. The S3C2416 supports changing the rate of the
@@ -121,6 +126,7 @@ config ARM_S3C2416_CPUFREQ_VCORESCALE
 config ARM_S3C64XX_CPUFREQ
 	bool "Samsung S3C64XX"
 	depends on CPU_S3C6410
+	select CPU_FREQ_TABLE
 	default y
 	help
 	  This adds the CPUFreq driver for Samsung S3C6410 SoC.
@@ -147,6 +153,15 @@ config ARM_SA1110_CPUFREQ
 config ARM_SPEAR_CPUFREQ
 	bool "SPEAr CPUFreq support"
 	depends on PLAT_SPEAR
+	select CPU_FREQ_TABLE
 	default y
 	help
 	  This adds the CPUFreq driver support for SPEAr SOCs.
+
+config ARM_TEGRA_CPUFREQ
+	bool "TEGRA CPUFreq support"
+	depends on ARCH_TEGRA
+	select CPU_FREQ_TABLE
+	default y
+	help
+	  This adds the CPUFreq driver support for TEGRA SOCs.

drivers/cpufreq/Kconfig.powerpc

@@ -1,6 +1,7 @@
 config CPU_FREQ_CBE
 	tristate "CBE frequency scaling"
 	depends on CBE_RAS && PPC_CELL
+	select CPU_FREQ_TABLE
 	default m
 	help
 	  This adds the cpufreq driver for Cell BE processors.
@@ -23,3 +24,39 @@ config CPU_FREQ_MAPLE
 	help
 	  This adds support for frequency switching on Maple 970FX
 	  Evaluation Board and compatible boards (IBM JS2x blades).
+
+config PPC_CORENET_CPUFREQ
+	tristate "CPU frequency scaling driver for Freescale E500MC SoCs"
+	depends on PPC_E500MC && OF && COMMON_CLK
+	select CPU_FREQ_TABLE
+	select CLK_PPC_CORENET
+	help
+	  This adds the CPUFreq driver support for Freescale e500mc,
+	  e5500 and e6500 series SoCs which are capable of changing
+	  the CPU's frequency dynamically.
+
+config CPU_FREQ_PMAC
+	bool "Support for Apple PowerBooks"
+	depends on ADB_PMU && PPC32
+	select CPU_FREQ_TABLE
+	help
+	  This adds support for frequency switching on Apple PowerBooks,
+	  this currently includes some models of iBook & Titanium
+	  PowerBook.
+
+config CPU_FREQ_PMAC64
+	bool "Support for some Apple G5s"
+	depends on PPC_PMAC && PPC64
+	select CPU_FREQ_TABLE
+	help
+	  This adds support for frequency switching on Apple iMac G5,
+	  and some of the more recent desktop G5 machines as well.
+
+config PPC_PASEMI_CPUFREQ
+	bool "Support for PA Semi PWRficient"
+	depends on PPC_PASEMI
+	select CPU_FREQ_TABLE
+	default y
+	help
+	  This adds the support for frequency switching on PA Semi
+	  PWRficient processors.

drivers/cpufreq/Kconfig.x86

@@ -132,6 +132,7 @@ config X86_POWERNOW_K8
 config X86_AMD_FREQ_SENSITIVITY
 	tristate "AMD frequency sensitivity feedback powersave bias"
 	depends on CPU_FREQ_GOV_ONDEMAND && X86_ACPI_CPUFREQ && CPU_SUP_AMD
+	select CPU_FREQ_TABLE
 	help
 	  This adds AMD-specific powersave bias function to the ondemand
 	  governor, which allows it to make more power-conscious frequency

drivers/cpufreq/Makefile

@@ -71,7 +71,7 @@ obj-$(CONFIG_ARM_S5PV210_CPUFREQ)	+= s5pv210-cpufreq.o
 obj-$(CONFIG_ARM_SA1100_CPUFREQ)	+= sa1100-cpufreq.o
 obj-$(CONFIG_ARM_SA1110_CPUFREQ)	+= sa1110-cpufreq.o
 obj-$(CONFIG_ARM_SPEAR_CPUFREQ)		+= spear-cpufreq.o
-obj-$(CONFIG_ARCH_TEGRA)		+= tegra-cpufreq.o
+obj-$(CONFIG_ARM_TEGRA_CPUFREQ)		+= tegra-cpufreq.o
 
 ##################################################################################
 # PowerPC platform drivers
@@ -79,11 +79,15 @@ obj-$(CONFIG_CPU_FREQ_CBE)		+= ppc-cbe-cpufreq.o
 ppc-cbe-cpufreq-y			+= ppc_cbe_cpufreq_pervasive.o ppc_cbe_cpufreq.o
 obj-$(CONFIG_CPU_FREQ_CBE_PMI)		+= ppc_cbe_cpufreq_pmi.o
 obj-$(CONFIG_CPU_FREQ_MAPLE)		+= maple-cpufreq.o
+obj-$(CONFIG_PPC_CORENET_CPUFREQ)   += ppc-corenet-cpufreq.o
+obj-$(CONFIG_CPU_FREQ_PMAC)		+= pmac32-cpufreq.o
+obj-$(CONFIG_CPU_FREQ_PMAC64)		+= pmac64-cpufreq.o
+obj-$(CONFIG_PPC_PASEMI_CPUFREQ)	+= pasemi-cpufreq.o
 
 ##################################################################################
 # Other platform drivers
 obj-$(CONFIG_AVR32_AT32AP_CPUFREQ)	+= at32ap-cpufreq.o
-obj-$(CONFIG_BLACKFIN)			+= blackfin-cpufreq.o
+obj-$(CONFIG_BFIN_CPU_FREQ)		+= blackfin-cpufreq.o
 obj-$(CONFIG_CRIS_MACH_ARTPEC3)		+= cris-artpec3-cpufreq.o
 obj-$(CONFIG_ETRAXFS)			+= cris-etraxfs-cpufreq.o
 obj-$(CONFIG_IA64_ACPI_CPUFREQ)		+= ia64-acpi-cpufreq.o

drivers/cpufreq/acpi-cpufreq.c

@@ -232,7 +232,7 @@ static unsigned extract_msr(u32 msr, struct acpi_cpufreq_data *data)
 	perf = data->acpi_data;
 
 	for (i = 0; data->freq_table[i].frequency != CPUFREQ_TABLE_END; i++) {
-		if (msr == perf->states[data->freq_table[i].index].status)
+		if (msr == perf->states[data->freq_table[i].driver_data].status)
 			return data->freq_table[i].frequency;
 	}
 	return data->freq_table[0].frequency;
@@ -442,7 +442,7 @@ static int acpi_cpufreq_target(struct cpufreq_policy *policy,
 		goto out;
 	}
 
-	next_perf_state = data->freq_table[next_state].index;
+	next_perf_state = data->freq_table[next_state].driver_data;
 	if (perf->state == next_perf_state) {
 		if (unlikely(data->resume)) {
 			pr_debug("Called after resume, resetting to P%d\n",
@@ -494,12 +494,14 @@ static int acpi_cpufreq_target(struct cpufreq_policy *policy,
 			pr_debug("acpi_cpufreq_target failed (%d)\n",
 				policy->cpu);
 			result = -EAGAIN;
-			goto out;
+			freqs.new = freqs.old;
 		}
 	}
 
 	cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
-	perf->state = next_perf_state;
+
+	if (!result)
+		perf->state = next_perf_state;
 
 out:
 	return result;
@@ -811,7 +813,7 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
 		    data->freq_table[valid_states-1].frequency / 1000)
 			continue;
 
-		data->freq_table[valid_states].index = i;
+		data->freq_table[valid_states].driver_data = i;
 		data->freq_table[valid_states].frequency =
 		    perf->states[i].core_frequency * 1000;
 		valid_states++;
@@ -947,7 +949,7 @@ static void __init acpi_cpufreq_boost_init(void)
 	/* We create the boost file in any case, though for systems without
 	 * hardware support it will be read-only and hardwired to return 0.
 	 */
-	if (sysfs_create_file(cpufreq_global_kobject, &(global_boost.attr)))
+	if (cpufreq_sysfs_create_file(&(global_boost.attr)))
 		pr_warn(PFX "could not register global boost sysfs file\n");
 	else
 		pr_debug("registered global boost sysfs file\n");
@@ -955,7 +957,7 @@ static void __init acpi_cpufreq_boost_init(void)
 
 static void __exit acpi_cpufreq_boost_exit(void)
 {
-	sysfs_remove_file(cpufreq_global_kobject, &(global_boost.attr));
+	cpufreq_sysfs_remove_file(&(global_boost.attr));
 
 	if (msrs) {
 		unregister_cpu_notifier(&boost_nb);

drivers/cpufreq/arm_big_little.c

@@ -84,11 +84,9 @@ static int bL_cpufreq_set_target(struct cpufreq_policy *policy,
 	ret = clk_set_rate(clk[cur_cluster], freqs.new * 1000);
 	if (ret) {
 		pr_err("clk_set_rate failed: %d\n", ret);
-		return ret;
+		freqs.new = freqs.old;
 	}
 
-	policy->cur = freqs.new;
-
 	cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
 
 	return ret;

drivers/cpufreq/blackfin-cpufreq.c

@@ -20,23 +20,23 @@
 
 
 /* this is the table of CCLK frequencies, in Hz */
-/* .index is the entry in the auxiliary dpm_state_table[] */
+/* .driver_data is the entry in the auxiliary dpm_state_table[] */
 static struct cpufreq_frequency_table bfin_freq_table[] = {
 	{
 		.frequency = CPUFREQ_TABLE_END,
-		.index = 0,
+		.driver_data = 0,
 	},
 	{
 		.frequency = CPUFREQ_TABLE_END,
-		.index = 1,
+		.driver_data = 1,
 	},
 	{
 		.frequency = CPUFREQ_TABLE_END,
-		.index = 2,
+		.driver_data = 2,
 	},
 	{
 		.frequency = CPUFREQ_TABLE_END,
-		.index = 0,
+		.driver_data = 0,
 	},
 };
 

drivers/cpufreq/cpufreq.c

@@ -3,6 +3,7 @@
  *
  *  Copyright (C) 2001 Russell King
  *            (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de>
+ *            (C) 2013 Viresh Kumar <viresh.kumar@linaro.org>
  *
  *  Oct 2005 - Ashok Raj <ashok.raj@intel.com>
  *	Added handling for CPU hotplug
@@ -12,12 +13,13 @@
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
- *
  */
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
+#include <asm/cputime.h>
 #include <linux/kernel.h>
+#include <linux/kernel_stat.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/notifier.h>
@@ -25,6 +27,7 @@
 #include <linux/delay.h>
 #include <linux/interrupt.h>
 #include <linux/spinlock.h>
+#include <linux/tick.h>
 #include <linux/device.h>
 #include <linux/slab.h>
 #include <linux/cpu.h>
@@ -41,11 +44,13 @@
  */
 static struct cpufreq_driver *cpufreq_driver;
 static DEFINE_PER_CPU(struct cpufreq_policy *, cpufreq_cpu_data);
+static DEFINE_RWLOCK(cpufreq_driver_lock);
+static DEFINE_MUTEX(cpufreq_governor_lock);
+
 #ifdef CONFIG_HOTPLUG_CPU
 /* This one keeps track of the previously set governor of a removed CPU */
 static DEFINE_PER_CPU(char[CPUFREQ_NAME_LEN], cpufreq_cpu_governor);
 #endif
-static DEFINE_RWLOCK(cpufreq_driver_lock);
 
 /*
  * cpu_policy_rwsem is a per CPU reader-writer semaphore designed to cure
@@ -132,6 +137,51 @@ bool have_governor_per_policy(void)
 {
 	return cpufreq_driver->have_governor_per_policy;
 }
+EXPORT_SYMBOL_GPL(have_governor_per_policy);
+
+struct kobject *get_governor_parent_kobj(struct cpufreq_policy *policy)
+{
+	if (have_governor_per_policy())
+		return &policy->kobj;
+	else
+		return cpufreq_global_kobject;
+}
+EXPORT_SYMBOL_GPL(get_governor_parent_kobj);
+
+static inline u64 get_cpu_idle_time_jiffy(unsigned int cpu, u64 *wall)
+{
+	u64 idle_time;
+	u64 cur_wall_time;
+	u64 busy_time;
+
+	cur_wall_time = jiffies64_to_cputime64(get_jiffies_64());
+
+	busy_time = kcpustat_cpu(cpu).cpustat[CPUTIME_USER];
+	busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_SYSTEM];
+	busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_IRQ];
+	busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_SOFTIRQ];
+	busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_STEAL];
+	busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_NICE];
+
+	idle_time = cur_wall_time - busy_time;
+	if (wall)
+		*wall = cputime_to_usecs(cur_wall_time);
+
+	return cputime_to_usecs(idle_time);
+}
+
+u64 get_cpu_idle_time(unsigned int cpu, u64 *wall, int io_busy)
+{
+	u64 idle_time = get_cpu_idle_time_us(cpu, io_busy ? wall : NULL);
+
+	if (idle_time == -1ULL)
+		return get_cpu_idle_time_jiffy(cpu, wall);
+	else if (!io_busy)
+		idle_time += get_cpu_iowait_time_us(cpu, wall);
+
+	return idle_time;
+}
+EXPORT_SYMBOL_GPL(get_cpu_idle_time);
 
 static struct cpufreq_policy *__cpufreq_cpu_get(unsigned int cpu, bool sysfs)
 {
@@ -150,7 +200,6 @@ static struct cpufreq_policy *__cpufreq_cpu_get(unsigned int cpu, bool sysfs)
 	if (!try_module_get(cpufreq_driver->owner))
 		goto err_out_unlock;
 
-
 	/* get the CPU */
 	data = per_cpu(cpufreq_cpu_data, cpu);
 
@@ -220,7 +269,7 @@ static void cpufreq_cpu_put_sysfs(struct cpufreq_policy *data)
  */
 #ifndef CONFIG_SMP
 static unsigned long l_p_j_ref;
-static unsigned int  l_p_j_ref_freq;
+static unsigned int l_p_j_ref_freq;
 
 static void adjust_jiffies(unsigned long val, struct cpufreq_freqs *ci)
 {
@@ -233,7 +282,7 @@ static void adjust_jiffies(unsigned long val, struct cpufreq_freqs *ci)
 		pr_debug("saving %lu as reference value for loops_per_jiffy; "
 			"freq is %u kHz\n", l_p_j_ref, l_p_j_ref_freq);
 	}
-	if ((val == CPUFREQ_POSTCHANGE  && ci->old != ci->new) ||
+	if ((val == CPUFREQ_POSTCHANGE && ci->old != ci->new) ||
 	    (val == CPUFREQ_RESUMECHANGE || val == CPUFREQ_SUSPENDCHANGE)) {
 		loops_per_jiffy = cpufreq_scale(l_p_j_ref, l_p_j_ref_freq,
 								ci->new);
@@ -248,8 +297,7 @@ static inline void adjust_jiffies(unsigned long val, struct cpufreq_freqs *ci)
 }
 #endif
 
-
-void __cpufreq_notify_transition(struct cpufreq_policy *policy,
+static void __cpufreq_notify_transition(struct cpufreq_policy *policy,
 		struct cpufreq_freqs *freqs, unsigned int state)
 {
 	BUG_ON(irqs_disabled());
@@ -294,6 +342,7 @@ void __cpufreq_notify_transition(struct cpufreq_policy *policy,
 		break;
 	}
 }
+
 /**
  * cpufreq_notify_transition - call notifier chain and adjust_jiffies
  * on frequency transition.
@@ -311,7 +360,6 @@ void cpufreq_notify_transition(struct cpufreq_policy *policy,
 EXPORT_SYMBOL_GPL(cpufreq_notify_transition);
 
 
-
 /*********************************************************************
  *                          SYSFS INTERFACE                          *
  *********************************************************************/
@@ -376,7 +424,6 @@ out:
 	return err;
 }
 
-
 /**
  * cpufreq_per_cpu_attr_read() / show_##file_name() -
  * print out cpufreq information
@@ -441,7 +488,6 @@ static ssize_t show_cpuinfo_cur_freq(struct cpufreq_policy *policy,
 	return sprintf(buf, "%u\n", cur_freq);
 }
 
-
 /**
  * show_scaling_governor - show the current policy for the specified CPU
  */
@@ -457,7 +503,6 @@ static ssize_t show_scaling_governor(struct cpufreq_policy *policy, char *buf)
 	return -EINVAL;
 }
 
-
 /**
  * store_scaling_governor - store policy for the specified CPU
  */
@@ -480,8 +525,10 @@ static ssize_t store_scaling_governor(struct cpufreq_policy *policy,
 						&new_policy.governor))
 		return -EINVAL;
 
-	/* Do not use cpufreq_set_policy here or the user_policy.max
-	   will be wrongly overridden */
+	/*
+	 * Do not use cpufreq_set_policy here or the user_policy.max
+	 * will be wrongly overridden
+	 */
 	ret = __cpufreq_set_policy(policy, &new_policy);
 
 	policy->user_policy.policy = policy->policy;
@@ -630,9 +677,6 @@ static struct attribute *default_attrs[] = {
 	NULL
 };
 
-struct kobject *cpufreq_global_kobject;
-EXPORT_SYMBOL(cpufreq_global_kobject);
-
 #define to_policy(k) container_of(k, struct cpufreq_policy, kobj)
 #define to_attr(a) container_of(a, struct freq_attr, attr)
 
@@ -703,6 +747,49 @@ static struct kobj_type ktype_cpufreq = {
 	.release	= cpufreq_sysfs_release,
 };
 
+struct kobject *cpufreq_global_kobject;
+EXPORT_SYMBOL(cpufreq_global_kobject);
+
+static int cpufreq_global_kobject_usage;
+
+int cpufreq_get_global_kobject(void)
+{
+	if (!cpufreq_global_kobject_usage++)
+		return kobject_add(cpufreq_global_kobject,
+				&cpu_subsys.dev_root->kobj, "%s", "cpufreq");
+
+	return 0;
+}
+EXPORT_SYMBOL(cpufreq_get_global_kobject);
+
+void cpufreq_put_global_kobject(void)
+{
+	if (!--cpufreq_global_kobject_usage)
+		kobject_del(cpufreq_global_kobject);
+}
+EXPORT_SYMBOL(cpufreq_put_global_kobject);
+
+int cpufreq_sysfs_create_file(const struct attribute *attr)
+{
+	int ret = cpufreq_get_global_kobject();
+
+	if (!ret) {
+		ret = sysfs_create_file(cpufreq_global_kobject, attr);
+		if (ret)
+			cpufreq_put_global_kobject();
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL(cpufreq_sysfs_create_file);
+
+void cpufreq_sysfs_remove_file(const struct attribute *attr)
+{
+	sysfs_remove_file(cpufreq_global_kobject, attr);
+	cpufreq_put_global_kobject();
+}
+EXPORT_SYMBOL(cpufreq_sysfs_remove_file);
+
 /* symlink affected CPUs */
 static int cpufreq_add_dev_symlink(unsigned int cpu,
 				   struct cpufreq_policy *policy)
@@ -1005,7 +1092,8 @@ static void update_policy_cpu(struct cpufreq_policy *policy, unsigned int cpu)
  * Caller should already have policy_rwsem in write mode for this CPU.
  * This routine frees the rwsem before returning.
  */
-static int __cpufreq_remove_dev(struct device *dev, struct subsys_interface *sif)
+static int __cpufreq_remove_dev(struct device *dev,
+		struct subsys_interface *sif)
 {
 	unsigned int cpu = dev->id, ret, cpus;
 	unsigned long flags;
@@ -1112,7 +1200,6 @@ static int __cpufreq_remove_dev(struct device *dev, struct subsys_interface *sif
 	return 0;
 }
 
-
 static int cpufreq_remove_dev(struct device *dev, struct subsys_interface *sif)
 {
 	unsigned int cpu = dev->id;
@@ -1125,7 +1212,6 @@ static int cpufreq_remove_dev(struct device *dev, struct subsys_interface *sif)
 	return retval;
 }
 
-
 static void handle_update(struct work_struct *work)
 {
 	struct cpufreq_policy *policy =
@@ -1136,7 +1222,8 @@ static void handle_update(struct work_struct *work)
 }
 
 /**
- *	cpufreq_out_of_sync - If actual and saved CPU frequency differs, we're in deep trouble.
+ *	cpufreq_out_of_sync - If actual and saved CPU frequency differs, we're
+ *	in deep trouble.
  *	@cpu: cpu number
  *	@old_freq: CPU frequency the kernel thinks the CPU runs at
  *	@new_freq: CPU frequency the CPU actually runs at
@@ -1151,7 +1238,6 @@ static void cpufreq_out_of_sync(unsigned int cpu, unsigned int old_freq,
 	struct cpufreq_freqs freqs;
 	unsigned long flags;
 
-
 	pr_debug("Warning: CPU frequency out of sync: cpufreq and timing "
 	       "core thinks of %u, is %u kHz.\n", old_freq, new_freq);
 
@@ -1166,7 +1252,6 @@ static void cpufreq_out_of_sync(unsigned int cpu, unsigned int old_freq,
 	cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
 }
 
-
 /**
  * cpufreq_quick_get - get the CPU frequency (in kHz) from policy->cur
  * @cpu: CPU number
@@ -1212,7 +1297,6 @@ unsigned int cpufreq_quick_get_max(unsigned int cpu)
 }
 EXPORT_SYMBOL(cpufreq_quick_get_max);
 
-
 static unsigned int __cpufreq_get(unsigned int cpu)
 {
 	struct cpufreq_policy *policy = per_cpu(cpufreq_cpu_data, cpu);
@@ -1271,7 +1355,6 @@ static struct subsys_interface cpufreq_interface = {
 	.remove_dev	= cpufreq_remove_dev,
 };
 
-
 /**
  * cpufreq_bp_suspend - Prepare the boot CPU for system suspend.
  *
@@ -1408,11 +1491,10 @@ int cpufreq_register_notifier(struct notifier_block *nb, unsigned int list)
 }
 EXPORT_SYMBOL(cpufreq_register_notifier);
 
-
 /**
  *	cpufreq_unregister_notifier - unregister a driver with cpufreq
  *	@nb: notifier block to be unregistered
- *      @list: CPUFREQ_TRANSITION_NOTIFIER or CPUFREQ_POLICY_NOTIFIER
+ *	@list: CPUFREQ_TRANSITION_NOTIFIER or CPUFREQ_POLICY_NOTIFIER
  *
  *	Remove a driver from the CPU frequency notifier list.
  *
@@ -1448,7 +1530,6 @@ EXPORT_SYMBOL(cpufreq_unregister_notifier);
  *                              GOVERNORS                            *
  *********************************************************************/
 
-
 int __cpufreq_driver_target(struct cpufreq_policy *policy,
 			    unsigned int target_freq,
 			    unsigned int relation)
@@ -1484,10 +1565,6 @@ int cpufreq_driver_target(struct cpufreq_policy *policy,
 {
 	int ret = -EINVAL;
 
-	policy = cpufreq_cpu_get(policy->cpu);
-	if (!policy)
-		goto no_policy;
-
 	if (unlikely(lock_policy_rwsem_write(policy->cpu)))
 		goto fail;
 
@@ -1496,30 +1573,19 @@ int cpufreq_driver_target(struct cpufreq_policy *policy,
 	unlock_policy_rwsem_write(policy->cpu);
 
 fail:
-	cpufreq_cpu_put(policy);
-no_policy:
 	return ret;
 }
 EXPORT_SYMBOL_GPL(cpufreq_driver_target);
 
 int __cpufreq_driver_getavg(struct cpufreq_policy *policy, unsigned int cpu)
 {
-	int ret = 0;
-
 	if (cpufreq_disabled())
-		return ret;
+		return 0;
 
 	if (!cpufreq_driver->getavg)
 		return 0;
 
-	policy = cpufreq_cpu_get(policy->cpu);
-	if (!policy)
-		return -EINVAL;
-
-	ret = cpufreq_driver->getavg(policy, cpu);
-
-	cpufreq_cpu_put(policy);
-	return ret;
+	return cpufreq_driver->getavg(policy, cpu);
 }
 EXPORT_SYMBOL_GPL(__cpufreq_driver_getavg);
 
@@ -1562,6 +1628,21 @@ static int __cpufreq_governor(struct cpufreq_policy *policy,
 
 	pr_debug("__cpufreq_governor for CPU %u, event %u\n",
 						policy->cpu, event);
+
+	mutex_lock(&cpufreq_governor_lock);
+	if ((!policy->governor_enabled && (event == CPUFREQ_GOV_STOP)) ||
+	    (policy->governor_enabled && (event == CPUFREQ_GOV_START))) {
+		mutex_unlock(&cpufreq_governor_lock);
+		return -EBUSY;
+	}
+
+	if (event == CPUFREQ_GOV_STOP)
+		policy->governor_enabled = false;
+	else if (event == CPUFREQ_GOV_START)
+		policy->governor_enabled = true;
+
+	mutex_unlock(&cpufreq_governor_lock);
+
 	ret = policy->governor->governor(policy, event);
 
 	if (!ret) {
@@ -1569,6 +1650,14 @@ static int __cpufreq_governor(struct cpufreq_policy *policy,
 			policy->governor->initialized++;
 		else if (event == CPUFREQ_GOV_POLICY_EXIT)
 			policy->governor->initialized--;
+	} else {
+		/* Restore original values */
+		mutex_lock(&cpufreq_governor_lock);
+		if (event == CPUFREQ_GOV_STOP)
+			policy->governor_enabled = true;
+		else if (event == CPUFREQ_GOV_START)
+			policy->governor_enabled = false;
+		mutex_unlock(&cpufreq_governor_lock);
 	}
 
 	/* we keep one module reference alive for
@@ -1581,7 +1670,6 @@ static int __cpufreq_governor(struct cpufreq_policy *policy,
 	return ret;
 }
 
-
 int cpufreq_register_governor(struct cpufreq_governor *governor)
 {
 	int err;
@@ -1606,7 +1694,6 @@ int cpufreq_register_governor(struct cpufreq_governor *governor)
 }
 EXPORT_SYMBOL_GPL(cpufreq_register_governor);
 
-
 void cpufreq_unregister_governor(struct cpufreq_governor *governor)
 {
 #ifdef CONFIG_HOTPLUG_CPU
@@ -1636,7 +1723,6 @@ void cpufreq_unregister_governor(struct cpufreq_governor *governor)
 EXPORT_SYMBOL_GPL(cpufreq_unregister_governor);
 
 
-
 /*********************************************************************
  *                          POLICY INTERFACE                         *
  *********************************************************************/
@@ -1665,7 +1751,6 @@ int cpufreq_get_policy(struct cpufreq_policy *policy, unsigned int cpu)
 }
 EXPORT_SYMBOL(cpufreq_get_policy);
 
-
 /*
  * data   : current policy.
  * policy : policy to be set.
@@ -1699,8 +1784,10 @@ static int __cpufreq_set_policy(struct cpufreq_policy *data,
 	blocking_notifier_call_chain(&cpufreq_policy_notifier_list,
 			CPUFREQ_INCOMPATIBLE, policy);
 
-	/* verify the cpu speed can be set within this limit,
-	   which might be different to the first one */
+	/*
+	 * verify the cpu speed can be set within this limit, which might be
+	 * different to the first one
+	 */
 	ret = cpufreq_driver->verify(policy);
 	if (ret)
 		goto error_out;
@@ -1802,8 +1889,10 @@ int cpufreq_update_policy(unsigned int cpu)
 	policy.policy = data->user_policy.policy;
 	policy.governor = data->user_policy.governor;
 
-	/* BIOS might change freq behind our back
-	  -> ask driver for current freq and notify governors about a change */
+	/*
+	 * BIOS might change freq behind our back
+	 * -> ask driver for current freq and notify governors about a change
+	 */
 	if (cpufreq_driver->get) {
 		policy.cur = cpufreq_driver->get(cpu);
 		if (!data->cur) {
@@ -1852,7 +1941,7 @@ static int __cpuinit cpufreq_cpu_callback(struct notifier_block *nfb,
 }
 
 static struct notifier_block __refdata cpufreq_cpu_notifier = {
-    .notifier_call = cpufreq_cpu_callback,
+	.notifier_call = cpufreq_cpu_callback,
 };
 
 /*********************************************************************
@@ -1864,7 +1953,7 @@ static struct notifier_block __refdata cpufreq_cpu_notifier = {
  * @driver_data: A struct cpufreq_driver containing the values#
  * submitted by the CPU Frequency driver.
  *
- *   Registers a CPU Frequency driver to this core code. This code
+ * Registers a CPU Frequency driver to this core code. This code
  * returns zero on success, -EBUSY when another driver got here first
  * (and isn't unregistered in the meantime).
  *
@@ -1931,11 +2020,10 @@ err_null_driver:
 }
 EXPORT_SYMBOL_GPL(cpufreq_register_driver);
 
-
 /**
  * cpufreq_unregister_driver - unregister the current CPUFreq driver
  *
- *    Unregister the current CPUFreq driver. Only call this if you have
+ * Unregister the current CPUFreq driver. Only call this if you have
  * the right to do so, i.e. if you have succeeded in initialising before!
  * Returns zero if successful, and -EINVAL if the cpufreq_driver is
  * currently not initialised.
@@ -1972,7 +2060,7 @@ static int __init cpufreq_core_init(void)
 		init_rwsem(&per_cpu(cpu_policy_rwsem, cpu));
 	}
 
-	cpufreq_global_kobject = kobject_create_and_add("cpufreq", &cpu_subsys.dev_root->kobj);
+	cpufreq_global_kobject = kobject_create();
 	BUG_ON(!cpufreq_global_kobject);
 	register_syscore_ops(&cpufreq_syscore_ops);
 

drivers/cpufreq/cpufreq_governor.c

@@ -23,21 +23,12 @@
 #include <linux/kernel_stat.h>
 #include <linux/mutex.h>
 #include <linux/slab.h>
-#include <linux/tick.h>
 #include <linux/types.h>
 #include <linux/workqueue.h>
 #include <linux/cpu.h>
 
 #include "cpufreq_governor.h"
 
-static struct kobject *get_governor_parent_kobj(struct cpufreq_policy *policy)
-{
-	if (have_governor_per_policy())
-		return &policy->kobj;
-	else
-		return cpufreq_global_kobject;
-}
-
 static struct attribute_group *get_sysfs_attr(struct dbs_data *dbs_data)
 {
 	if (have_governor_per_policy())
@@ -46,41 +37,6 @@ static struct attribute_group *get_sysfs_attr(struct dbs_data *dbs_data)
 		return dbs_data->cdata->attr_group_gov_sys;
 }
 
-static inline u64 get_cpu_idle_time_jiffy(unsigned int cpu, u64 *wall)
-{
-	u64 idle_time;
-	u64 cur_wall_time;
-	u64 busy_time;
-
-	cur_wall_time = jiffies64_to_cputime64(get_jiffies_64());
-
-	busy_time = kcpustat_cpu(cpu).cpustat[CPUTIME_USER];
-	busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_SYSTEM];
-	busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_IRQ];
-	busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_SOFTIRQ];
-	busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_STEAL];
-	busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_NICE];
-
-	idle_time = cur_wall_time - busy_time;
-	if (wall)
-		*wall = cputime_to_usecs(cur_wall_time);
-
-	return cputime_to_usecs(idle_time);
-}
-
-u64 get_cpu_idle_time(unsigned int cpu, u64 *wall, int io_busy)
-{
-	u64 idle_time = get_cpu_idle_time_us(cpu, io_busy ? wall : NULL);
-
-	if (idle_time == -1ULL)
-		return get_cpu_idle_time_jiffy(cpu, wall);
-	else if (!io_busy)
-		idle_time += get_cpu_iowait_time_us(cpu, wall);
-
-	return idle_time;
-}
-EXPORT_SYMBOL_GPL(get_cpu_idle_time);
-
 void dbs_check_cpu(struct dbs_data *dbs_data, int cpu)
 {
 	struct cpu_dbs_common_info *cdbs = dbs_data->cdata->get_cpu_cdbs(cpu);
@@ -278,6 +234,9 @@ int cpufreq_governor_dbs(struct cpufreq_policy *policy,
 			return rc;
 		}
 
+		if (!have_governor_per_policy())
+			WARN_ON(cpufreq_get_global_kobject());
+
 		rc = sysfs_create_group(get_governor_parent_kobj(policy),
 				get_sysfs_attr(dbs_data));
 		if (rc) {
@@ -316,6 +275,9 @@ int cpufreq_governor_dbs(struct cpufreq_policy *policy,
 			sysfs_remove_group(get_governor_parent_kobj(policy),
 					get_sysfs_attr(dbs_data));
 
+			if (!have_governor_per_policy())
+				cpufreq_put_global_kobject();
+
 			if ((dbs_data->cdata->governor == GOV_CONSERVATIVE) &&
 				(policy->governor->initialized == 1)) {
 				struct cs_ops *cs_ops = dbs_data->cdata->gov_ops;

drivers/cpufreq/cpufreq_governor.h

@@ -81,7 +81,7 @@ static ssize_t show_##file_name##_gov_sys				\
 	return sprintf(buf, "%u\n", tuners->file_name);			\
 }									\
 									\
-static ssize_t show_##file_name##_gov_pol					\
+static ssize_t show_##file_name##_gov_pol				\
 (struct cpufreq_policy *policy, char *buf)				\
 {									\
 	struct dbs_data *dbs_data = policy->governor_data;		\
@@ -91,7 +91,7 @@ static ssize_t show_##file_name##_gov_pol					\
 
 #define store_one(_gov, file_name)					\
 static ssize_t store_##file_name##_gov_sys				\
-(struct kobject *kobj, struct attribute *attr, const char *buf, size_t count)	\
+(struct kobject *kobj, struct attribute *attr, const char *buf, size_t count) \
 {									\
 	struct dbs_data *dbs_data = _gov##_dbs_cdata.gdbs_data;		\
 	return store_##file_name(dbs_data, buf, count);			\
@@ -256,7 +256,6 @@ static ssize_t show_sampling_rate_min_gov_pol				\
 	return sprintf(buf, "%u\n", dbs_data->min_sampling_rate);	\
 }
 
-u64 get_cpu_idle_time(unsigned int cpu, u64 *wall, int io_busy);
 void dbs_check_cpu(struct dbs_data *dbs_data, int cpu);
 bool need_load_eval(struct cpu_dbs_common_info *cdbs,
 		unsigned int sampling_rate);

drivers/cpufreq/cpufreq_performance.c

@@ -17,7 +17,6 @@
 #include <linux/cpufreq.h>
 #include <linux/init.h>
 
-
 static int cpufreq_governor_performance(struct cpufreq_policy *policy,
 					unsigned int event)
 {
@@ -44,19 +43,16 @@ struct cpufreq_governor cpufreq_gov_performance = {
 	.owner		= THIS_MODULE,
 };
 
-
 static int __init cpufreq_gov_performance_init(void)
 {
 	return cpufreq_register_governor(&cpufreq_gov_performance);
 }
 
-
 static void __exit cpufreq_gov_performance_exit(void)
 {
 	cpufreq_unregister_governor(&cpufreq_gov_performance);
 }
 
-
 MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>");
 MODULE_DESCRIPTION("CPUfreq policy governor 'performance'");
 MODULE_LICENSE("GPL");

drivers/cpufreq/cpufreq_powersave.c

@@ -1,7 +1,7 @@
 /*
- *  linux/drivers/cpufreq/cpufreq_powersave.c
+ * linux/drivers/cpufreq/cpufreq_powersave.c
  *
- *  Copyright (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de>
+ * Copyright (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de>
  *
  *
  * This program is free software; you can redistribute it and/or modify
@@ -48,13 +48,11 @@ static int __init cpufreq_gov_powersave_init(void)
 	return cpufreq_register_governor(&cpufreq_gov_powersave);
 }
 
-
 static void __exit cpufreq_gov_powersave_exit(void)
 {
 	cpufreq_unregister_governor(&cpufreq_gov_powersave);
 }
 
-
 MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>");
 MODULE_DESCRIPTION("CPUfreq policy governor 'powersave'");
 MODULE_LICENSE("GPL");

drivers/cpufreq/cpufreq_stats.c

@@ -27,7 +27,7 @@ static spinlock_t cpufreq_stats_lock;
 struct cpufreq_stats {
 	unsigned int cpu;
 	unsigned int total_trans;
-	unsigned long long  last_time;
+	unsigned long long last_time;
 	unsigned int max_state;
 	unsigned int state_num;
 	unsigned int last_index;
@@ -116,7 +116,7 @@ static ssize_t show_trans_table(struct cpufreq_policy *policy, char *buf)
 		len += snprintf(buf + len, PAGE_SIZE - len, "%9u: ",
 				stat->freq_table[i]);
 
-		for (j = 0; j < stat->state_num; j++)   {
+		for (j = 0; j < stat->state_num; j++) {
 			if (len >= PAGE_SIZE)
 				break;
 			len += snprintf(buf + len, PAGE_SIZE - len, "%9u ",

drivers/cpufreq/cpufreq_userspace.c

@@ -13,55 +13,13 @@
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/smp.h>
-#include <linux/init.h>
-#include <linux/spinlock.h>
-#include <linux/interrupt.h>
 #include <linux/cpufreq.h>
-#include <linux/cpu.h>
-#include <linux/types.h>
-#include <linux/fs.h>
-#include <linux/sysfs.h>
+#include <linux/init.h>
+#include <linux/module.h>
 #include <linux/mutex.h>
 
-/**
- * A few values needed by the userspace governor
- */
-static DEFINE_PER_CPU(unsigned int, cpu_max_freq);
-static DEFINE_PER_CPU(unsigned int, cpu_min_freq);
-static DEFINE_PER_CPU(unsigned int, cpu_cur_freq); /* current CPU freq */
-static DEFINE_PER_CPU(unsigned int, cpu_set_freq); /* CPU freq desired by
-							userspace */
 static DEFINE_PER_CPU(unsigned int, cpu_is_managed);
-
 static DEFINE_MUTEX(userspace_mutex);
-static int cpus_using_userspace_governor;
-
-/* keep track of frequency transitions */
-static int
-userspace_cpufreq_notifier(struct notifier_block *nb, unsigned long val,
-	void *data)
-{
-	struct cpufreq_freqs *freq = data;
-
-	if (!per_cpu(cpu_is_managed, freq->cpu))
-		return 0;
-
-	if (val == CPUFREQ_POSTCHANGE) {
-		pr_debug("saving cpu_cur_freq of cpu %u to be %u kHz\n",
-				freq->cpu, freq->new);
-		per_cpu(cpu_cur_freq, freq->cpu) = freq->new;
-	}
-
-	return 0;
-}
-
-static struct notifier_block userspace_cpufreq_notifier_block = {
-	.notifier_call  = userspace_cpufreq_notifier
-};
-
 
 /**
  * cpufreq_set - set the CPU frequency
@@ -80,13 +38,6 @@ static int cpufreq_set(struct cpufreq_policy *policy, unsigned int freq)
 	if (!per_cpu(cpu_is_managed, policy->cpu))
 		goto err;
 
-	per_cpu(cpu_set_freq, policy->cpu) = freq;
-
-	if (freq < per_cpu(cpu_min_freq, policy->cpu))
-		freq = per_cpu(cpu_min_freq, policy->cpu);
-	if (freq > per_cpu(cpu_max_freq, policy->cpu))
-		freq = per_cpu(cpu_max_freq, policy->cpu);
-
 	/*
 	 * We're safe from concurrent calls to ->target() here
 	 * as we hold the userspace_mutex lock. If we were calling
@@ -104,10 +55,9 @@ static int cpufreq_set(struct cpufreq_policy *policy, unsigned int freq)
 	return ret;
 }
 
-
 static ssize_t show_speed(struct cpufreq_policy *policy, char *buf)
 {
-	return sprintf(buf, "%u\n", per_cpu(cpu_cur_freq, policy->cpu));
+	return sprintf(buf, "%u\n", policy->cur);
 }
 
 static int cpufreq_governor_userspace(struct cpufreq_policy *policy,
@@ -119,73 +69,37 @@ static int cpufreq_governor_userspace(struct cpufreq_policy *policy,
 	switch (event) {
 	case CPUFREQ_GOV_START:
 		BUG_ON(!policy->cur);
-		mutex_lock(&userspace_mutex);
-
-		if (cpus_using_userspace_governor == 0) {
-			cpufreq_register_notifier(
-					&userspace_cpufreq_notifier_block,
-					CPUFREQ_TRANSITION_NOTIFIER);
-		}
-		cpus_using_userspace_governor++;
+		pr_debug("started managing cpu %u\n", cpu);
 
+		mutex_lock(&userspace_mutex);
 		per_cpu(cpu_is_managed, cpu) = 1;
-		per_cpu(cpu_min_freq, cpu) = policy->min;
-		per_cpu(cpu_max_freq, cpu) = policy->max;
-		per_cpu(cpu_cur_freq, cpu) = policy->cur;
-		per_cpu(cpu_set_freq, cpu) = policy->cur;
-		pr_debug("managing cpu %u started "
-			"(%u - %u kHz, currently %u kHz)\n",
-				cpu,
-				per_cpu(cpu_min_freq, cpu),
-				per_cpu(cpu_max_freq, cpu),
-				per_cpu(cpu_cur_freq, cpu));
-
 		mutex_unlock(&userspace_mutex);
 		break;
 	case CPUFREQ_GOV_STOP:
-		mutex_lock(&userspace_mutex);
-		cpus_using_userspace_governor--;
-		if (cpus_using_userspace_governor == 0) {
-			cpufreq_unregister_notifier(
-					&userspace_cpufreq_notifier_block,
-					CPUFREQ_TRANSITION_NOTIFIER);
-		}
+		pr_debug("managing cpu %u stopped\n", cpu);
 
+		mutex_lock(&userspace_mutex);
 		per_cpu(cpu_is_managed, cpu) = 0;
-		per_cpu(cpu_min_freq, cpu) = 0;
-		per_cpu(cpu_max_freq, cpu) = 0;
-		per_cpu(cpu_set_freq, cpu) = 0;
-		pr_debug("managing cpu %u stopped\n", cpu);
 		mutex_unlock(&userspace_mutex);
 		break;
 	case CPUFREQ_GOV_LIMITS:
 		mutex_lock(&userspace_mutex);
-		pr_debug("limit event for cpu %u: %u - %u kHz, "
-			"currently %u kHz, last set to %u kHz\n",
+		pr_debug("limit event for cpu %u: %u - %u kHz, currently %u kHz\n",
 			cpu, policy->min, policy->max,
-			per_cpu(cpu_cur_freq, cpu),
-			per_cpu(cpu_set_freq, cpu));
-		if (policy->max < per_cpu(cpu_set_freq, cpu)) {
+			policy->cur);
+
+		if (policy->max < policy->cur)
 			__cpufreq_driver_target(policy, policy->max,
 						CPUFREQ_RELATION_H);
-		} else if (policy->min > per_cpu(cpu_set_freq, cpu)) {
+		else if (policy->min > policy->cur)
 			__cpufreq_driver_target(policy, policy->min,
 						CPUFREQ_RELATION_L);
-		} else {
-			__cpufreq_driver_target(policy,
-						per_cpu(cpu_set_freq, cpu),
-						CPUFREQ_RELATION_L);
-		}
-		per_cpu(cpu_min_freq, cpu) = policy->min;
-		per_cpu(cpu_max_freq, cpu) = policy->max;
-		per_cpu(cpu_cur_freq, cpu) = policy->cur;
 		mutex_unlock(&userspace_mutex);
 		break;
 	}
 	return rc;
 }
 
-
 #ifndef CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE
 static
 #endif
@@ -202,13 +116,11 @@ static int __init cpufreq_gov_userspace_init(void)
 	return cpufreq_register_governor(&cpufreq_gov_userspace);
 }
 
-
 static void __exit cpufreq_gov_userspace_exit(void)
 {
 	cpufreq_unregister_governor(&cpufreq_gov_userspace);
 }
 
-
 MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>, "
 		"Russell King <rmk@arm.linux.org.uk>");
 MODULE_DESCRIPTION("CPUfreq policy governor 'userspace'");

drivers/cpufreq/davinci-cpufreq.c

@@ -114,6 +114,9 @@ static int davinci_target(struct cpufreq_policy *policy,
 		pdata->set_voltage(idx);
 
 out:
+	if (ret)
+		freqs.new = freqs.old;
+
 	cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
 
 	return ret;

drivers/cpufreq/dbx500-cpufreq.c

@@ -57,13 +57,13 @@ static int dbx500_cpufreq_target(struct cpufreq_policy *policy,
 	if (ret) {
 		pr_err("dbx500-cpufreq: Failed to set armss_clk to %d Hz: error %d\n",
 		       freqs.new * 1000, ret);
-		return ret;
+		freqs.new = freqs.old;
 	}
 
 	/* post change notification */
 	cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
 
-	return 0;
+	return ret;
 }
 
 static unsigned int dbx500_cpufreq_getspeed(unsigned int cpu)

drivers/cpufreq/e_powersaver.c

@@ -161,6 +161,9 @@ postchange:
 		current_multiplier);
 	}
 #endif
+	if (err)
+		freqs.new = freqs.old;
+
 	cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
 	return err;
 }
@@ -188,7 +191,7 @@ static int eps_target(struct cpufreq_policy *policy,
 	}
 
 	/* Make frequency transition */
-	dest_state = centaur->freq_table[newstate].index & 0xffff;
+	dest_state = centaur->freq_table[newstate].driver_data & 0xffff;
 	ret = eps_set_state(centaur, policy, dest_state);
 	if (ret)
 		printk(KERN_ERR "eps: Timeout!\n");
@@ -380,9 +383,9 @@ static int eps_cpu_init(struct cpufreq_policy *policy)
 	f_table = &centaur->freq_table[0];
 	if (brand != EPS_BRAND_C7M) {
 		f_table[0].frequency = fsb * min_multiplier;
-		f_table[0].index = (min_multiplier << 8) | min_voltage;
+		f_table[0].driver_data = (min_multiplier << 8) | min_voltage;
 		f_table[1].frequency = fsb * max_multiplier;
-		f_table[1].index = (max_multiplier << 8) | max_voltage;
+		f_table[1].driver_data = (max_multiplier << 8) | max_voltage;
 		f_table[2].frequency = CPUFREQ_TABLE_END;
 	} else {
 		k = 0;
@@ -391,7 +394,7 @@ static int eps_cpu_init(struct cpufreq_policy *policy)
 		for (i = min_multiplier; i <= max_multiplier; i++) {
 			voltage = (k * step) / 256 + min_voltage;
 			f_table[k].frequency = fsb * i;
-			f_table[k].index = (i << 8) | voltage;
+			f_table[k].driver_data = (i << 8) | voltage;
 			k++;
 		}
 		f_table[k].frequency = CPUFREQ_TABLE_END;

drivers/cpufreq/exynos-cpufreq.c

@@ -113,7 +113,8 @@ static int exynos_cpufreq_scale(unsigned int target_freq)
 		if (ret) {
 			pr_err("%s: failed to set cpu voltage to %d\n",
 				__func__, arm_volt);
-			goto out;
+			freqs.new = freqs.old;
+			goto post_notify;
 		}
 	}
 
@@ -123,14 +124,19 @@ static int exynos_cpufreq_scale(unsigned int target_freq)
 		if (ret) {
 			pr_err("%s: failed to set cpu voltage to %d\n",
 				__func__, safe_arm_volt);
-			goto out;
+			freqs.new = freqs.old;
+			goto post_notify;
 		}
 	}
 
 	exynos_info->set_freq(old_index, index);
 
+post_notify:
 	cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
 
+	if (ret)
+		goto out;
+
 	/* When the new frequency is lower than current frequency */
 	if ((freqs.new < freqs.old) ||
 	   ((freqs.new > freqs.old) && safe_arm_volt)) {

drivers/cpufreq/freq_table.c

@@ -34,8 +34,8 @@ int cpufreq_frequency_table_cpuinfo(struct cpufreq_policy *policy,
 
 			continue;
 		}
-		pr_debug("table entry %u: %u kHz, %u index\n",
-					i, freq, table[i].index);
+		pr_debug("table entry %u: %u kHz, %u driver_data\n",
+					i, freq, table[i].driver_data);
 		if (freq < min_freq)
 			min_freq = freq;
 		if (freq > max_freq)
@@ -97,11 +97,11 @@ int cpufreq_frequency_table_target(struct cpufreq_policy *policy,
 				   unsigned int *index)
 {
 	struct cpufreq_frequency_table optimal = {
-		.index = ~0,
+		.driver_data = ~0,
 		.frequency = 0,
 	};
 	struct cpufreq_frequency_table suboptimal = {
-		.index = ~0,
+		.driver_data = ~0,
 		.frequency = 0,
 	};
 	unsigned int i;
@@ -129,12 +129,12 @@ int cpufreq_frequency_table_target(struct cpufreq_policy *policy,
 			if (freq <= target_freq) {
 				if (freq >= optimal.frequency) {
 					optimal.frequency = freq;
-					optimal.index = i;
+					optimal.driver_data = i;
 				}
 			} else {
 				if (freq <= suboptimal.frequency) {
 					suboptimal.frequency = freq;
-					suboptimal.index = i;
+					suboptimal.driver_data = i;
 				}
 			}
 			break;
@@ -142,26 +142,26 @@ int cpufreq_frequency_table_target(struct cpufreq_policy *policy,
 			if (freq >= target_freq) {
 				if (freq <= optimal.frequency) {
 					optimal.frequency = freq;
-					optimal.index = i;
+					optimal.driver_data = i;
 				}
 			} else {
 				if (freq >= suboptimal.frequency) {
 					suboptimal.frequency = freq;
-					suboptimal.index = i;
+					suboptimal.driver_data = i;
 				}
 			}
 			break;
 		}
 	}
-	if (optimal.index > i) {
-		if (suboptimal.index > i)
+	if (optimal.driver_data > i) {
+		if (suboptimal.driver_data > i)
 			return -EINVAL;
-		*index = suboptimal.index;
+		*index = suboptimal.driver_data;
 	} else
-		*index = optimal.index;
+		*index = optimal.driver_data;
 
 	pr_debug("target is %u (%u kHz, %u)\n", *index, table[*index].frequency,
-		table[*index].index);
+		table[*index].driver_data);
 
 	return 0;
 }

drivers/cpufreq/ia64-acpi-cpufreq.c

@@ -326,7 +326,7 @@ acpi_cpufreq_cpu_init (
 	/* table init */
 	for (i = 0; i <= data->acpi_data.state_count; i++)
 	{
-		data->freq_table[i].index = i;
+		data->freq_table[i].driver_data = i;
 		if (i < data->acpi_data.state_count) {
 			data->freq_table[i].frequency =
 			      data->acpi_data.states[i].core_frequency * 1000;

drivers/cpufreq/imx6q-cpufreq.c

@@ -68,8 +68,6 @@ static int imx6q_set_target(struct cpufreq_policy *policy,
 	if (freqs.old == freqs.new)
 		return 0;
 
-	cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
-
 	rcu_read_lock();
 	opp = opp_find_freq_ceil(cpu_dev, &freq_hz);
 	if (IS_ERR(opp)) {
@@ -86,13 +84,16 @@ static int imx6q_set_target(struct cpufreq_policy *policy,
 		freqs.old / 1000, volt_old / 1000,
 		freqs.new / 1000, volt / 1000);
 
+	cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
+
 	/* scaling up?  scale voltage before frequency */
 	if (freqs.new > freqs.old) {
 		ret = regulator_set_voltage_tol(arm_reg, volt, 0);
 		if (ret) {
 			dev_err(cpu_dev,
 				"failed to scale vddarm up: %d\n", ret);
-			return ret;
+			freqs.new = freqs.old;
+			goto post_notify;
 		}
 
 		/*
@@ -145,15 +146,18 @@ static int imx6q_set_target(struct cpufreq_policy *policy,
 	if (ret) {
 		dev_err(cpu_dev, "failed to set clock rate: %d\n", ret);
 		regulator_set_voltage_tol(arm_reg, volt_old, 0);
-		return ret;
+		freqs.new = freqs.old;
+		goto post_notify;
 	}
 
 	/* scaling down?  scale voltage after frequency */
 	if (freqs.new < freqs.old) {
 		ret = regulator_set_voltage_tol(arm_reg, volt, 0);
-		if (ret)
+		if (ret) {
 			dev_warn(cpu_dev,
 				 "failed to scale vddarm down: %d\n", ret);
+			ret = 0;
+		}
 
 		if (freqs.old == FREQ_1P2_GHZ / 1000) {
 			regulator_set_voltage_tol(pu_reg,
@@ -163,9 +167,10 @@ static int imx6q_set_target(struct cpufreq_policy *policy,
 		}
 	}
 
+post_notify:
 	cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
 
-	return 0;
+	return ret;
 }
 
 static int imx6q_cpufreq_init(struct cpufreq_policy *policy)

drivers/cpufreq/kirkwood-cpufreq.c

@@ -59,7 +59,7 @@ static void kirkwood_cpufreq_set_cpu_state(struct cpufreq_policy *policy,
 		unsigned int index)
 {
 	struct cpufreq_freqs freqs;
-	unsigned int state = kirkwood_freq_table[index].index;
+	unsigned int state = kirkwood_freq_table[index].driver_data;
 	unsigned long reg;
 
 	freqs.old = kirkwood_cpufreq_get_cpu_frequency(0);

drivers/cpufreq/longhaul.c

@@ -254,7 +254,7 @@ static void longhaul_setstate(struct cpufreq_policy *policy,
 	u32 bm_timeout = 1000;
 	unsigned int dir = 0;
 
-	mults_index = longhaul_table[table_index].index;
+	mults_index = longhaul_table[table_index].driver_data;
 	/* Safety precautions */
 	mult = mults[mults_index & 0x1f];
 	if (mult == -1)
@@ -487,7 +487,7 @@ static int __cpuinit longhaul_get_ranges(void)
 		if (ratio > maxmult || ratio < minmult)
 			continue;
 		longhaul_table[k].frequency = calc_speed(ratio);
-		longhaul_table[k].index	= j;
+		longhaul_table[k].driver_data	= j;
 		k++;
 	}
 	if (k <= 1) {
@@ -508,8 +508,8 @@ static int __cpuinit longhaul_get_ranges(void)
 		if (min_i != j) {
 			swap(longhaul_table[j].frequency,
 			     longhaul_table[min_i].frequency);
-			swap(longhaul_table[j].index,
-			     longhaul_table[min_i].index);
+			swap(longhaul_table[j].driver_data,
+			     longhaul_table[min_i].driver_data);
 		}
 	}
 
@@ -517,7 +517,7 @@ static int __cpuinit longhaul_get_ranges(void)
 
 	/* Find index we are running on */
 	for (j = 0; j < k; j++) {
-		if (mults[longhaul_table[j].index & 0x1f] == mult) {
+		if (mults[longhaul_table[j].driver_data & 0x1f] == mult) {
 			longhaul_index = j;
 			break;
 		}
@@ -613,7 +613,7 @@ static void __cpuinit longhaul_setup_voltagescaling(void)
 			pos = (speed - min_vid_speed) / kHz_step + minvid.pos;
 		else
 			pos = minvid.pos;
-		longhaul_table[j].index |= mV_vrm_table[pos] << 8;
+		longhaul_table[j].driver_data |= mV_vrm_table[pos] << 8;
 		vid = vrm_mV_table[mV_vrm_table[pos]];
 		printk(KERN_INFO PFX "f: %d kHz, index: %d, vid: %d mV\n",
 				speed, j, vid.mV);
@@ -656,12 +656,12 @@ static int longhaul_target(struct cpufreq_policy *policy,
 		 * this in hardware, C3 is old and we need to do this
 		 * in software. */
 		i = longhaul_index;
-		current_vid = (longhaul_table[longhaul_index].index >> 8);
+		current_vid = (longhaul_table[longhaul_index].driver_data >> 8);
 		current_vid &= 0x1f;
 		if (table_index > longhaul_index)
 			dir = 1;
 		while (i != table_index) {
-			vid = (longhaul_table[i].index >> 8) & 0x1f;
+			vid = (longhaul_table[i].driver_data >> 8) & 0x1f;
 			if (vid != current_vid) {
 				longhaul_setstate(policy, i);
 				current_vid = vid;

drivers/cpufreq/loongson2_cpufreq.c

@@ -72,7 +72,7 @@ static int loongson2_cpufreq_target(struct cpufreq_policy *policy,
 
 	freq =
 	    ((cpu_clock_freq / 1000) *
-	     loongson2_clockmod_table[newstate].index) / 8;
+	     loongson2_clockmod_table[newstate].driver_data) / 8;
 	if (freq < policy->min || freq > policy->max)
 		return -EINVAL;
 

drivers/cpufreq/omap-cpufreq.c

@@ -93,9 +93,6 @@ static int omap_target(struct cpufreq_policy *policy,
 	if (freqs.old == freqs.new && policy->cur == freqs.new)
 		return ret;
 
-	/* notifiers */
-	cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
-
 	freq = freqs.new * 1000;
 	ret = clk_round_rate(mpu_clk, freq);
 	if (IS_ERR_VALUE(ret)) {
@@ -125,6 +122,9 @@ static int omap_target(struct cpufreq_policy *policy,
 		freqs.old / 1000, volt_old ? volt_old / 1000 : -1,
 		freqs.new / 1000, volt ? volt / 1000 : -1);
 
+	/* notifiers */
+	cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
+
 	/* scaling up?  scale voltage before frequency */
 	if (mpu_reg && (freqs.new > freqs.old)) {
 		r = regulator_set_voltage(mpu_reg, volt - tol, volt + tol);

drivers/cpufreq/p4-clockmod.c

@@ -118,7 +118,7 @@ static int cpufreq_p4_target(struct cpufreq_policy *policy,
 		return -EINVAL;
 
 	freqs.old = cpufreq_p4_get(policy->cpu);
-	freqs.new = stock_freq * p4clockmod_table[newstate].index / 8;
+	freqs.new = stock_freq * p4clockmod_table[newstate].driver_data / 8;
 
 	if (freqs.new == freqs.old)
 		return 0;
@@ -131,7 +131,7 @@ static int cpufreq_p4_target(struct cpufreq_policy *policy,
 	 * Developer's Manual, Volume 3
 	 */
 	for_each_cpu(i, policy->cpus)
-		cpufreq_p4_setdc(i, p4clockmod_table[newstate].index);
+		cpufreq_p4_setdc(i, p4clockmod_table[newstate].driver_data);
 
 	/* notifiers */
 	cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);

arch/powerpc/platforms/pasemi/cpufreq.c → drivers/cpufreq/pasemi-cpufreq.c

@@ -204,7 +204,8 @@ static int pas_cpufreq_cpu_init(struct cpufreq_policy *policy)
 
 	/* initialize frequency table */
 	for (i=0; pas_freqs[i].frequency!=CPUFREQ_TABLE_END; i++) {
-		pas_freqs[i].frequency = get_astate_freq(pas_freqs[i].index) * 100000;
+		pas_freqs[i].frequency =
+			get_astate_freq(pas_freqs[i].driver_data) * 100000;
 		pr_debug("%d: %d\n", i, pas_freqs[i].frequency);
 	}
 
@@ -280,7 +281,7 @@ static int pas_cpufreq_target(struct cpufreq_policy *policy,
 	pr_debug("setting frequency for cpu %d to %d kHz, 1/%d of max frequency\n",
 		 policy->cpu,
 		 pas_freqs[pas_astate_new].frequency,
-		 pas_freqs[pas_astate_new].index);
+		 pas_freqs[pas_astate_new].driver_data);
 
 	current_astate = pas_astate_new;
 

drivers/cpufreq/pcc-cpufreq.c

@@ -243,6 +243,8 @@ static int pcc_cpufreq_target(struct cpufreq_policy *policy,
 	return 0;
 
 cmd_incomplete:
+	freqs.new = freqs.old;
+	cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
 	iowrite16(0, &pcch_hdr->status);
 	spin_unlock(&pcc_lock);
 	return -EINVAL;

drivers/cpufreq/powernow-k6.c

@@ -58,7 +58,7 @@ static int powernow_k6_get_cpu_multiplier(void)
 	msrval = POWERNOW_IOPORT + 0x0;
 	wrmsr(MSR_K6_EPMR, msrval, 0); /* disable it again */
 
-	return clock_ratio[(invalue >> 5)&7].index;
+	return clock_ratio[(invalue >> 5)&7].driver_data;
 }
 
 
@@ -75,13 +75,13 @@ static void powernow_k6_set_state(struct cpufreq_policy *policy,
 	unsigned long msrval;
 	struct cpufreq_freqs freqs;
 
-	if (clock_ratio[best_i].index > max_multiplier) {
+	if (clock_ratio[best_i].driver_data > max_multiplier) {
 		printk(KERN_ERR PFX "invalid target frequency\n");
 		return;
 	}
 
 	freqs.old = busfreq * powernow_k6_get_cpu_multiplier();
-	freqs.new = busfreq * clock_ratio[best_i].index;
+	freqs.new = busfreq * clock_ratio[best_i].driver_data;
 
 	cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
 
@@ -156,7 +156,7 @@ static int powernow_k6_cpu_init(struct cpufreq_policy *policy)
 
 	/* table init */
 	for (i = 0; (clock_ratio[i].frequency != CPUFREQ_TABLE_END); i++) {
-		f = clock_ratio[i].index;
+		f = clock_ratio[i].driver_data;
 		if (f > max_multiplier)
 			clock_ratio[i].frequency = CPUFREQ_ENTRY_INVALID;
 		else

drivers/cpufreq/powernow-k7.c

@@ -186,7 +186,7 @@ static int get_ranges(unsigned char *pst)
 		fid = *pst++;
 
 		powernow_table[j].frequency = (fsb * fid_codes[fid]) / 10;
-		powernow_table[j].index = fid; /* lower 8 bits */
+		powernow_table[j].driver_data = fid; /* lower 8 bits */
 
 		speed = powernow_table[j].frequency;
 
@@ -203,7 +203,7 @@ static int get_ranges(unsigned char *pst)
 			maximum_speed = speed;
 
 		vid = *pst++;
-		powernow_table[j].index |= (vid << 8); /* upper 8 bits */
+		powernow_table[j].driver_data |= (vid << 8); /* upper 8 bits */
 
 		pr_debug("   FID: 0x%x (%d.%dx [%dMHz])  "
 			 "VID: 0x%x (%d.%03dV)\n", fid, fid_codes[fid] / 10,
@@ -212,7 +212,7 @@ static int get_ranges(unsigned char *pst)
 			 mobile_vid_table[vid]%1000);
 	}
 	powernow_table[number_scales].frequency = CPUFREQ_TABLE_END;
-	powernow_table[number_scales].index = 0;
+	powernow_table[number_scales].driver_data = 0;
 
 	return 0;
 }
@@ -260,8 +260,8 @@ static void change_speed(struct cpufreq_policy *policy, unsigned int index)
 	 * vid are the upper 8 bits.
 	 */
 
-	fid = powernow_table[index].index & 0xFF;
-	vid = (powernow_table[index].index & 0xFF00) >> 8;
+	fid = powernow_table[index].driver_data & 0xFF;
+	vid = (powernow_table[index].driver_data & 0xFF00) >> 8;
 
 	rdmsrl(MSR_K7_FID_VID_STATUS, fidvidstatus.val);
 	cfid = fidvidstatus.bits.CFID;
@@ -373,8 +373,8 @@ static int powernow_acpi_init(void)
 		fid = pc.bits.fid;
 
 		powernow_table[i].frequency = fsb * fid_codes[fid] / 10;
-		powernow_table[i].index = fid; /* lower 8 bits */
-		powernow_table[i].index |= (vid << 8); /* upper 8 bits */
+		powernow_table[i].driver_data = fid; /* lower 8 bits */
+		powernow_table[i].driver_data |= (vid << 8); /* upper 8 bits */
 
 		speed = powernow_table[i].frequency;
 		speed_mhz = speed / 1000;
@@ -417,7 +417,7 @@ static int powernow_acpi_init(void)
 	}
 
 	powernow_table[i].frequency = CPUFREQ_TABLE_END;
-	powernow_table[i].index = 0;
+	powernow_table[i].driver_data = 0;
 
 	/* notify BIOS that we exist */
 	acpi_processor_notify_smm(THIS_MODULE);

drivers/cpufreq/powernow-k8.c

@@ -584,9 +584,9 @@ static void print_basics(struct powernow_k8_data *data)
 				CPUFREQ_ENTRY_INVALID) {
 				printk(KERN_INFO PFX
 					"fid 0x%x (%d MHz), vid 0x%x\n",
-					data->powernow_table[j].index & 0xff,
+					data->powernow_table[j].driver_data & 0xff,
 					data->powernow_table[j].frequency/1000,
-					data->powernow_table[j].index >> 8);
+					data->powernow_table[j].driver_data >> 8);
 		}
 	}
 	if (data->batps)
@@ -632,13 +632,13 @@ static int fill_powernow_table(struct powernow_k8_data *data,
 
 	for (j = 0; j < data->numps; j++) {
 		int freq;
-		powernow_table[j].index = pst[j].fid; /* lower 8 bits */
-		powernow_table[j].index |= (pst[j].vid << 8); /* upper 8 bits */
+		powernow_table[j].driver_data = pst[j].fid; /* lower 8 bits */
+		powernow_table[j].driver_data |= (pst[j].vid << 8); /* upper 8 bits */
 		freq = find_khz_freq_from_fid(pst[j].fid);
 		powernow_table[j].frequency = freq;
 	}
 	powernow_table[data->numps].frequency = CPUFREQ_TABLE_END;
-	powernow_table[data->numps].index = 0;
+	powernow_table[data->numps].driver_data = 0;
 
 	if (query_current_values_with_pending_wait(data)) {
 		kfree(powernow_table);
@@ -810,7 +810,7 @@ static int powernow_k8_cpu_init_acpi(struct powernow_k8_data *data)
 
 	powernow_table[data->acpi_data.state_count].frequency =
 		CPUFREQ_TABLE_END;
-	powernow_table[data->acpi_data.state_count].index = 0;
+	powernow_table[data->acpi_data.state_count].driver_data = 0;
 	data->powernow_table = powernow_table;
 
 	if (cpumask_first(cpu_core_mask(data->cpu)) == data->cpu)
@@ -865,7 +865,7 @@ static int fill_powernow_table_fidvid(struct powernow_k8_data *data,
 		pr_debug("   %d : fid 0x%x, vid 0x%x\n", i, fid, vid);
 
 		index = fid | (vid<<8);
-		powernow_table[i].index = index;
+		powernow_table[i].driver_data = index;
 
 		freq = find_khz_freq_from_fid(fid);
 		powernow_table[i].frequency = freq;
@@ -941,8 +941,8 @@ static int transition_frequency_fidvid(struct powernow_k8_data *data,
 	 * the cpufreq frequency table in find_psb_table, vid
 	 * are the upper 8 bits.
 	 */
-	fid = data->powernow_table[index].index & 0xFF;
-	vid = (data->powernow_table[index].index & 0xFF00) >> 8;
+	fid = data->powernow_table[index].driver_data & 0xFF;
+	vid = (data->powernow_table[index].driver_data & 0xFF00) >> 8;
 
 	pr_debug("table matched fid 0x%x, giving vid 0x%x\n", fid, vid);
 
@@ -967,9 +967,9 @@ static int transition_frequency_fidvid(struct powernow_k8_data *data,
 
 	res = transition_fid_vid(data, fid, vid);
 	if (res)
-		return res;
-
-	freqs.new = find_khz_freq_from_fid(data->currfid);
+		freqs.new = freqs.old;
+	else
+		freqs.new = find_khz_freq_from_fid(data->currfid);
 
 	cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
 	return res;

drivers/cpufreq/ppc-corenet-cpufreq.c

@@ -0,0 +1,380 @@
+/*
+ * Copyright 2013 Freescale Semiconductor, Inc.
+ *
+ * CPU Frequency Scaling driver for Freescale PowerPC corenet SoCs.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#define pr_fmt(fmt)	KBUILD_MODNAME ": " fmt
+
+#include <linux/clk.h>
+#include <linux/cpufreq.h>
+#include <linux/errno.h>
+#include <sysdev/fsl_soc.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/of.h>
+#include <linux/slab.h>
+#include <linux/smp.h>
+
+/**
+ * struct cpu_data - per CPU data struct
+ * @clk: the clk of CPU
+ * @parent: the parent node of cpu clock
+ * @table: frequency table
+ */
+struct cpu_data {
+	struct clk *clk;
+	struct device_node *parent;
+	struct cpufreq_frequency_table *table;
+};
+
+/**
+ * struct soc_data - SoC specific data
+ * @freq_mask: mask the disallowed frequencies
+ * @flag: unique flags
+ */
+struct soc_data {
+	u32 freq_mask[4];
+	u32 flag;
+};
+
+#define FREQ_MASK	1
+/* see hardware specification for the allowed frqeuencies */
+static const struct soc_data sdata[] = {
+	{ /* used by p2041 and p3041 */
+		.freq_mask = {0x8, 0x8, 0x2, 0x2},
+		.flag = FREQ_MASK,
+	},
+	{ /* used by p5020 */
+		.freq_mask = {0x8, 0x2},
+		.flag = FREQ_MASK,
+	},
+	{ /* used by p4080, p5040 */
+		.freq_mask = {0},
+		.flag = 0,
+	},
+};
+
+/*
+ * the minimum allowed core frequency, in Hz
+ * for chassis v1.0, >= platform frequency
+ * for chassis v2.0, >= platform frequency / 2
+ */
+static u32 min_cpufreq;
+static const u32 *fmask;
+
+/* serialize frequency changes  */
+static DEFINE_MUTEX(cpufreq_lock);
+static DEFINE_PER_CPU(struct cpu_data *, cpu_data);
+
+/* cpumask in a cluster */
+static DEFINE_PER_CPU(cpumask_var_t, cpu_mask);
+
+#ifndef CONFIG_SMP
+static inline const struct cpumask *cpu_core_mask(int cpu)
+{
+	return cpumask_of(0);
+}
+#endif
+
+static unsigned int corenet_cpufreq_get_speed(unsigned int cpu)
+{
+	struct cpu_data *data = per_cpu(cpu_data, cpu);
+
+	return clk_get_rate(data->clk) / 1000;
+}
+
+/* reduce the duplicated frequencies in frequency table */
+static void freq_table_redup(struct cpufreq_frequency_table *freq_table,
+		int count)
+{
+	int i, j;
+
+	for (i = 1; i < count; i++) {
+		for (j = 0; j < i; j++) {
+			if (freq_table[j].frequency == CPUFREQ_ENTRY_INVALID ||
+					freq_table[j].frequency !=
+					freq_table[i].frequency)
+				continue;
+
+			freq_table[i].frequency = CPUFREQ_ENTRY_INVALID;
+			break;
+		}
+	}
+}
+
+/* sort the frequencies in frequency table in descenting order */
+static void freq_table_sort(struct cpufreq_frequency_table *freq_table,
+		int count)
+{
+	int i, j, ind;
+	unsigned int freq, max_freq;
+	struct cpufreq_frequency_table table;
+	for (i = 0; i < count - 1; i++) {
+		max_freq = freq_table[i].frequency;
+		ind = i;
+		for (j = i + 1; j < count; j++) {
+			freq = freq_table[j].frequency;
+			if (freq == CPUFREQ_ENTRY_INVALID ||
+					freq <= max_freq)
+				continue;
+			ind = j;
+			max_freq = freq;
+		}
+
+		if (ind != i) {
+			/* exchange the frequencies */
+			table.driver_data = freq_table[i].driver_data;
+			table.frequency = freq_table[i].frequency;
+			freq_table[i].driver_data = freq_table[ind].driver_data;
+			freq_table[i].frequency = freq_table[ind].frequency;
+			freq_table[ind].driver_data = table.driver_data;
+			freq_table[ind].frequency = table.frequency;
+		}
+	}
+}
+
+static int corenet_cpufreq_cpu_init(struct cpufreq_policy *policy)
+{
+	struct device_node *np;
+	int i, count, ret;
+	u32 freq, mask;
+	struct clk *clk;
+	struct cpufreq_frequency_table *table;
+	struct cpu_data *data;
+	unsigned int cpu = policy->cpu;
+
+	np = of_get_cpu_node(cpu, NULL);
+	if (!np)
+		return -ENODEV;
+
+	data = kzalloc(sizeof(*data), GFP_KERNEL);
+	if (!data) {
+		pr_err("%s: no memory\n", __func__);
+		goto err_np;
+	}
+
+	data->clk = of_clk_get(np, 0);
+	if (IS_ERR(data->clk)) {
+		pr_err("%s: no clock information\n", __func__);
+		goto err_nomem2;
+	}
+
+	data->parent = of_parse_phandle(np, "clocks", 0);
+	if (!data->parent) {
+		pr_err("%s: could not get clock information\n", __func__);
+		goto err_nomem2;
+	}
+
+	count = of_property_count_strings(data->parent, "clock-names");
+	table = kcalloc(count + 1, sizeof(*table), GFP_KERNEL);
+	if (!table) {
+		pr_err("%s: no memory\n", __func__);
+		goto err_node;
+	}
+
+	if (fmask)
+		mask = fmask[get_hard_smp_processor_id(cpu)];
+	else
+		mask = 0x0;
+
+	for (i = 0; i < count; i++) {
+		clk = of_clk_get(data->parent, i);
+		freq = clk_get_rate(clk);
+		/*
+		 * the clock is valid if its frequency is not masked
+		 * and large than minimum allowed frequency.
+		 */
+		if (freq < min_cpufreq || (mask & (1 << i)))
+			table[i].frequency = CPUFREQ_ENTRY_INVALID;
+		else
+			table[i].frequency = freq / 1000;
+		table[i].driver_data = i;
+	}
+	freq_table_redup(table, count);
+	freq_table_sort(table, count);
+	table[i].frequency = CPUFREQ_TABLE_END;
+
+	/* set the min and max frequency properly */
+	ret = cpufreq_frequency_table_cpuinfo(policy, table);
+	if (ret) {
+		pr_err("invalid frequency table: %d\n", ret);
+		goto err_nomem1;
+	}
+
+	data->table = table;
+	per_cpu(cpu_data, cpu) = data;
+
+	/* update ->cpus if we have cluster, no harm if not */
+	cpumask_copy(policy->cpus, per_cpu(cpu_mask, cpu));
+	for_each_cpu(i, per_cpu(cpu_mask, cpu))
+		per_cpu(cpu_data, i) = data;
+
+	policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL;
+	policy->cur = corenet_cpufreq_get_speed(policy->cpu);
+
+	cpufreq_frequency_table_get_attr(table, cpu);
+	of_node_put(np);
+
+	return 0;
+
+err_nomem1:
+	kfree(table);
+err_node:
+	of_node_put(data->parent);
+err_nomem2:
+	per_cpu(cpu_data, cpu) = NULL;
+	kfree(data);
+err_np:
+	of_node_put(np);
+
+	return -ENODEV;
+}
+
+static int __exit corenet_cpufreq_cpu_exit(struct cpufreq_policy *policy)
+{
+	struct cpu_data *data = per_cpu(cpu_data, policy->cpu);
+	unsigned int cpu;
+
+	cpufreq_frequency_table_put_attr(policy->cpu);
+	of_node_put(data->parent);
+	kfree(data->table);
+	kfree(data);
+
+	for_each_cpu(cpu, per_cpu(cpu_mask, policy->cpu))
+		per_cpu(cpu_data, cpu) = NULL;
+
+	return 0;
+}
+
+static int corenet_cpufreq_verify(struct cpufreq_policy *policy)
+{
+	struct cpufreq_frequency_table *table =
+		per_cpu(cpu_data, policy->cpu)->table;
+
+	return cpufreq_frequency_table_verify(policy, table);
+}
+
+static int corenet_cpufreq_target(struct cpufreq_policy *policy,
+		unsigned int target_freq, unsigned int relation)
+{
+	struct cpufreq_freqs freqs;
+	unsigned int new;
+	struct clk *parent;
+	int ret;
+	struct cpu_data *data = per_cpu(cpu_data, policy->cpu);
+
+	cpufreq_frequency_table_target(policy, data->table,
+			target_freq, relation, &new);
+
+	if (policy->cur == data->table[new].frequency)
+		return 0;
+
+	freqs.old = policy->cur;
+	freqs.new = data->table[new].frequency;
+
+	mutex_lock(&cpufreq_lock);
+	cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
+
+	parent = of_clk_get(data->parent, data->table[new].driver_data);
+	ret = clk_set_parent(data->clk, parent);
+	if (ret)
+		freqs.new = freqs.old;
+
+	cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
+	mutex_unlock(&cpufreq_lock);
+
+	return ret;
+}
+
+static struct freq_attr *corenet_cpufreq_attr[] = {
+	&cpufreq_freq_attr_scaling_available_freqs,
+	NULL,
+};
+
+static struct cpufreq_driver ppc_corenet_cpufreq_driver = {
+	.name		= "ppc_cpufreq",
+	.owner		= THIS_MODULE,
+	.flags		= CPUFREQ_CONST_LOOPS,
+	.init		= corenet_cpufreq_cpu_init,
+	.exit		= __exit_p(corenet_cpufreq_cpu_exit),
+	.verify		= corenet_cpufreq_verify,
+	.target		= corenet_cpufreq_target,
+	.get		= corenet_cpufreq_get_speed,
+	.attr		= corenet_cpufreq_attr,
+};
+
+static const struct of_device_id node_matches[] __initdata = {
+	{ .compatible = "fsl,p2041-clockgen", .data = &sdata[0], },
+	{ .compatible = "fsl,p3041-clockgen", .data = &sdata[0], },
+	{ .compatible = "fsl,p5020-clockgen", .data = &sdata[1], },
+	{ .compatible = "fsl,p4080-clockgen", .data = &sdata[2], },
+	{ .compatible = "fsl,p5040-clockgen", .data = &sdata[2], },
+	{ .compatible = "fsl,qoriq-clockgen-2.0", },
+	{}
+};
+
+static int __init ppc_corenet_cpufreq_init(void)
+{
+	int ret;
+	struct device_node  *np;
+	const struct of_device_id *match;
+	const struct soc_data *data;
+	unsigned int cpu;
+
+	np = of_find_matching_node(NULL, node_matches);
+	if (!np)
+		return -ENODEV;
+
+	for_each_possible_cpu(cpu) {
+		if (!alloc_cpumask_var(&per_cpu(cpu_mask, cpu), GFP_KERNEL))
+			goto err_mask;
+		cpumask_copy(per_cpu(cpu_mask, cpu), cpu_core_mask(cpu));
+	}
+
+	match = of_match_node(node_matches, np);
+	data = match->data;
+	if (data) {
+		if (data->flag)
+			fmask = data->freq_mask;
+		min_cpufreq = fsl_get_sys_freq();
+	} else {
+		min_cpufreq = fsl_get_sys_freq() / 2;
+	}
+
+	of_node_put(np);
+
+	ret = cpufreq_register_driver(&ppc_corenet_cpufreq_driver);
+	if (!ret)
+		pr_info("Freescale PowerPC corenet CPU frequency scaling driver\n");
+
+	return ret;
+
+err_mask:
+	for_each_possible_cpu(cpu)
+		free_cpumask_var(per_cpu(cpu_mask, cpu));
+
+	return -ENOMEM;
+}
+module_init(ppc_corenet_cpufreq_init);
+
+static void __exit ppc_corenet_cpufreq_exit(void)
+{
+	unsigned int cpu;
+
+	for_each_possible_cpu(cpu)
+		free_cpumask_var(per_cpu(cpu_mask, cpu));
+
+	cpufreq_unregister_driver(&ppc_corenet_cpufreq_driver);
+}
+module_exit(ppc_corenet_cpufreq_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Tang Yuantian <Yuantian.Tang@freescale.com>");
+MODULE_DESCRIPTION("cpufreq driver for Freescale e500mc series SoCs");

drivers/cpufreq/ppc_cbe_cpufreq.c

@@ -106,7 +106,7 @@ static int cbe_cpufreq_cpu_init(struct cpufreq_policy *policy)
 
 	/* initialize frequency table */
 	for (i=0; cbe_freqs[i].frequency!=CPUFREQ_TABLE_END; i++) {
-		cbe_freqs[i].frequency = max_freq / cbe_freqs[i].index;
+		cbe_freqs[i].frequency = max_freq / cbe_freqs[i].driver_data;
 		pr_debug("%d: %d\n", i, cbe_freqs[i].frequency);
 	}
 
@@ -165,7 +165,7 @@ static int cbe_cpufreq_target(struct cpufreq_policy *policy,
 		 "1/%d of max frequency\n",
 		 policy->cpu,
 		 cbe_freqs[cbe_pmode_new].frequency,
-		 cbe_freqs[cbe_pmode_new].index);
+		 cbe_freqs[cbe_pmode_new].driver_data);
 
 	rc = set_pmode(policy->cpu, cbe_pmode_new);
 

drivers/cpufreq/pxa2xx-cpufreq.c

@@ -420,7 +420,7 @@ static int pxa_cpufreq_init(struct cpufreq_policy *policy)
 	/* Generate pxa25x the run cpufreq_frequency_table struct */
 	for (i = 0; i < NUM_PXA25x_RUN_FREQS; i++) {
 		pxa255_run_freq_table[i].frequency = pxa255_run_freqs[i].khz;
-		pxa255_run_freq_table[i].index = i;
+		pxa255_run_freq_table[i].driver_data = i;
 	}
 	pxa255_run_freq_table[i].frequency = CPUFREQ_TABLE_END;
 
@@ -428,7 +428,7 @@ static int pxa_cpufreq_init(struct cpufreq_policy *policy)
 	for (i = 0; i < NUM_PXA25x_TURBO_FREQS; i++) {
 		pxa255_turbo_freq_table[i].frequency =
 			pxa255_turbo_freqs[i].khz;
-		pxa255_turbo_freq_table[i].index = i;
+		pxa255_turbo_freq_table[i].driver_data = i;
 	}
 	pxa255_turbo_freq_table[i].frequency = CPUFREQ_TABLE_END;
 
@@ -440,9 +440,9 @@ static int pxa_cpufreq_init(struct cpufreq_policy *policy)
 		if (freq > pxa27x_maxfreq)
 			break;
 		pxa27x_freq_table[i].frequency = freq;
-		pxa27x_freq_table[i].index = i;
+		pxa27x_freq_table[i].driver_data = i;
 	}
-	pxa27x_freq_table[i].index = i;
+	pxa27x_freq_table[i].driver_data = i;
 	pxa27x_freq_table[i].frequency = CPUFREQ_TABLE_END;
 
 	/*

drivers/cpufreq/pxa3xx-cpufreq.c

@@ -98,10 +98,10 @@ static int setup_freqs_table(struct cpufreq_policy *policy,
 		return -ENOMEM;
 
 	for (i = 0; i < num; i++) {
-		table[i].index = i;
+		table[i].driver_data = i;
 		table[i].frequency = freqs[i].cpufreq_mhz * 1000;
 	}
-	table[num].index = i;
+	table[num].driver_data = i;
 	table[num].frequency = CPUFREQ_TABLE_END;
 
 	pxa3xx_freqs = freqs;

drivers/cpufreq/s3c2416-cpufreq.c

@@ -244,7 +244,7 @@ static int s3c2416_cpufreq_set_target(struct cpufreq_policy *policy,
 	if (ret != 0)
 		goto out;
 
-	idx = s3c_freq->freq_table[i].index;
+	idx = s3c_freq->freq_table[i].driver_data;
 
 	if (idx == SOURCE_HCLK)
 		to_dvs = 1;
@@ -312,7 +312,7 @@ static void __init s3c2416_cpufreq_cfg_regulator(struct s3c2416_data *s3c_freq)
 		if (freq->frequency == CPUFREQ_ENTRY_INVALID)
 			continue;
 
-		dvfs = &s3c2416_dvfs_table[freq->index];
+		dvfs = &s3c2416_dvfs_table[freq->driver_data];
 		found = 0;
 
 		/* Check only the min-voltage, more is always ok on S3C2416 */
@@ -462,7 +462,7 @@ static int __init s3c2416_cpufreq_driver_init(struct cpufreq_policy *policy)
 	freq = s3c_freq->freq_table;
 	while (freq->frequency != CPUFREQ_TABLE_END) {
 		/* special handling for dvs mode */
-		if (freq->index == 0) {
+		if (freq->driver_data == 0) {
 			if (!s3c_freq->hclk) {
 				pr_debug("cpufreq: %dkHz unsupported as it would need unavailable dvs mode\n",
 					 freq->frequency);

drivers/cpufreq/s3c64xx-cpufreq.c

@@ -87,7 +87,7 @@ static int s3c64xx_cpufreq_set_target(struct cpufreq_policy *policy,
 	freqs.old = clk_get_rate(armclk) / 1000;
 	freqs.new = s3c64xx_freq_table[i].frequency;
 	freqs.flags = 0;
-	dvfs = &s3c64xx_dvfs_table[s3c64xx_freq_table[i].index];
+	dvfs = &s3c64xx_dvfs_table[s3c64xx_freq_table[i].driver_data];
 
 	if (freqs.old == freqs.new)
 		return 0;
@@ -104,7 +104,8 @@ static int s3c64xx_cpufreq_set_target(struct cpufreq_policy *policy,
 		if (ret != 0) {
 			pr_err("Failed to set VDDARM for %dkHz: %d\n",
 			       freqs.new, ret);
-			goto err;
+			freqs.new = freqs.old;
+			goto post_notify;
 		}
 	}
 #endif
@@ -113,10 +114,13 @@ static int s3c64xx_cpufreq_set_target(struct cpufreq_policy *policy,
 	if (ret < 0) {
 		pr_err("Failed to set rate %dkHz: %d\n",
 		       freqs.new, ret);
-		goto err;
+		freqs.new = freqs.old;
 	}
 
+post_notify:
 	cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
+	if (ret)
+		goto err;
 
 #ifdef CONFIG_REGULATOR
 	if (vddarm && freqs.new < freqs.old) {

drivers/cpufreq/sc520_freq.c

@@ -71,7 +71,7 @@ static void sc520_freq_set_cpu_state(struct cpufreq_policy *policy,
 	local_irq_disable();
 
 	clockspeed_reg = *cpuctl & ~0x03;
-	*cpuctl = clockspeed_reg | sc520_freq_table[state].index;
+	*cpuctl = clockspeed_reg | sc520_freq_table[state].driver_data;
 
 	local_irq_enable();
 

drivers/cpufreq/sparc-us2e-cpufreq.c

@@ -308,17 +308,17 @@ static int __init us2e_freq_cpu_init(struct cpufreq_policy *policy)
 	struct cpufreq_frequency_table *table =
 		&us2e_freq_table[cpu].table[0];
 
-	table[0].index = 0;
+	table[0].driver_data = 0;
 	table[0].frequency = clock_tick / 1;
-	table[1].index = 1;
+	table[1].driver_data = 1;
 	table[1].frequency = clock_tick / 2;
-	table[2].index = 2;
+	table[2].driver_data = 2;
 	table[2].frequency = clock_tick / 4;
-	table[2].index = 3;
+	table[2].driver_data = 3;
 	table[2].frequency = clock_tick / 6;
-	table[2].index = 4;
+	table[2].driver_data = 4;
 	table[2].frequency = clock_tick / 8;
-	table[2].index = 5;
+	table[2].driver_data = 5;
 	table[3].frequency = CPUFREQ_TABLE_END;
 
 	policy->cpuinfo.transition_latency = 0;

drivers/cpufreq/sparc-us3-cpufreq.c

@@ -169,13 +169,13 @@ static int __init us3_freq_cpu_init(struct cpufreq_policy *policy)
 	struct cpufreq_frequency_table *table =
 		&us3_freq_table[cpu].table[0];
 
-	table[0].index = 0;
+	table[0].driver_data = 0;
 	table[0].frequency = clock_tick / 1;
-	table[1].index = 1;
+	table[1].driver_data = 1;
 	table[1].frequency = clock_tick / 2;
-	table[2].index = 2;
+	table[2].driver_data = 2;
 	table[2].frequency = clock_tick / 32;
-	table[3].index = 0;
+	table[3].driver_data = 0;
 	table[3].frequency = CPUFREQ_TABLE_END;
 
 	policy->cpuinfo.transition_latency = 0;

drivers/cpufreq/spear-cpufreq.c

@@ -250,11 +250,11 @@ static int spear_cpufreq_driver_init(void)
 	}
 
 	for (i = 0; i < cnt; i++) {
-		freq_tbl[i].index = i;
+		freq_tbl[i].driver_data = i;
 		freq_tbl[i].frequency = be32_to_cpup(val++);
 	}
 
-	freq_tbl[i].index = i;
+	freq_tbl[i].driver_data = i;
 	freq_tbl[i].frequency = CPUFREQ_TABLE_END;
 
 	spear_cpufreq.freq_tbl = freq_tbl;

drivers/cpufreq/speedstep-centrino.c

@@ -79,11 +79,11 @@ static struct cpufreq_driver centrino_driver;
 
 /* Computes the correct form for IA32_PERF_CTL MSR for a particular
    frequency/voltage operating point; frequency in MHz, volts in mV.
-   This is stored as "index" in the structure. */
+   This is stored as "driver_data" in the structure. */
 #define OP(mhz, mv)							\
 	{								\
 		.frequency = (mhz) * 1000,				\
-		.index = (((mhz)/100) << 8) | ((mv - 700) / 16)		\
+		.driver_data = (((mhz)/100) << 8) | ((mv - 700) / 16)		\
 	}
 
 /*
@@ -307,7 +307,7 @@ static unsigned extract_clock(unsigned msr, unsigned int cpu, int failsafe)
 		per_cpu(centrino_model, cpu)->op_points[i].frequency
 							!= CPUFREQ_TABLE_END;
 	     i++) {
-		if (msr == per_cpu(centrino_model, cpu)->op_points[i].index)
+		if (msr == per_cpu(centrino_model, cpu)->op_points[i].driver_data)
 			return per_cpu(centrino_model, cpu)->
 							op_points[i].frequency;
 	}
@@ -501,7 +501,7 @@ static int centrino_target (struct cpufreq_policy *policy,
 			break;
 		}
 
-		msr = per_cpu(centrino_model, cpu)->op_points[newstate].index;
+		msr = per_cpu(centrino_model, cpu)->op_points[newstate].driver_data;
 
 		if (first_cpu) {
 			rdmsr_on_cpu(good_cpu, MSR_IA32_PERF_CTL, &oldmsr, &h);

drivers/cpufreq/tegra-cpufreq.c

@@ -28,17 +28,16 @@
 #include <linux/io.h>
 #include <linux/suspend.h>
 
-/* Frequency table index must be sequential starting at 0 */
 static struct cpufreq_frequency_table freq_table[] = {
-	{ 0, 216000 },
-	{ 1, 312000 },
-	{ 2, 456000 },
-	{ 3, 608000 },
-	{ 4, 760000 },
-	{ 5, 816000 },
-	{ 6, 912000 },
-	{ 7, 1000000 },
-	{ 8, CPUFREQ_TABLE_END },
+	{ .frequency = 216000 },
+	{ .frequency = 312000 },
+	{ .frequency = 456000 },
+	{ .frequency = 608000 },
+	{ .frequency = 760000 },
+	{ .frequency = 816000 },
+	{ .frequency = 912000 },
+	{ .frequency = 1000000 },
+	{ .frequency = CPUFREQ_TABLE_END },
 };
 
 #define NUM_CPUS	2
@@ -138,12 +137,12 @@ static int tegra_update_cpu_speed(struct cpufreq_policy *policy,
 	if (ret) {
 		pr_err("cpu-tegra: Failed to set cpu frequency to %d kHz\n",
 			freqs.new);
-		return ret;
+		freqs.new = freqs.old;
 	}
 
 	cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);
 
-	return 0;
+	return ret;
 }
 
 static unsigned long tegra_cpu_highest_speed(void)

drivers/mfd/db8500-prcmu.c

@@ -1724,9 +1724,9 @@ static long round_clock_rate(u8 clock, unsigned long rate)
 
 /* CPU FREQ table, may be changed due to if MAX_OPP is supported. */
 static struct cpufreq_frequency_table db8500_cpufreq_table[] = {
-	{ .frequency = 200000, .index = ARM_EXTCLK,},
-	{ .frequency = 400000, .index = ARM_50_OPP,},
-	{ .frequency = 800000, .index = ARM_100_OPP,},
+	{ .frequency = 200000, .driver_data = ARM_EXTCLK,},
+	{ .frequency = 400000, .driver_data = ARM_50_OPP,},
+	{ .frequency = 800000, .driver_data = ARM_100_OPP,},
 	{ .frequency = CPUFREQ_TABLE_END,}, /* To be used for MAX_OPP. */
 	{ .frequency = CPUFREQ_TABLE_END,},
 };
@@ -1901,7 +1901,7 @@ static int set_armss_rate(unsigned long rate)
 		return -EINVAL;
 
 	/* Set the new arm opp. */
-	return db8500_prcmu_set_arm_opp(db8500_cpufreq_table[i].index);
+	return db8500_prcmu_set_arm_opp(db8500_cpufreq_table[i].driver_data);
 }
 
 static int set_plldsi_rate(unsigned long rate)
@@ -3105,7 +3105,7 @@ static void db8500_prcmu_update_cpufreq(void)
 {
 	if (prcmu_has_arm_maxopp()) {
 		db8500_cpufreq_table[3].frequency = 1000000;
-		db8500_cpufreq_table[3].index = ARM_MAX_OPP;
+		db8500_cpufreq_table[3].driver_data = ARM_MAX_OPP;
 	}
 }
 

drivers/sh/clk/core.c

@@ -63,12 +63,12 @@ void clk_rate_table_build(struct clk *clk,
 		else
 			freq = clk->parent->rate * mult / div;
 
-		freq_table[i].index = i;
+		freq_table[i].driver_data = i;
 		freq_table[i].frequency = freq;
 	}
 
 	/* Termination entry */
-	freq_table[i].index = i;
+	freq_table[i].driver_data = i;
 	freq_table[i].frequency = CPUFREQ_TABLE_END;
 }
 

include/linux/cpufreq.h

@@ -1,8 +1,8 @@
 /*
- *  linux/include/linux/cpufreq.h
+ * linux/include/linux/cpufreq.h
  *
- *  Copyright (C) 2001 Russell King
- *            (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de>
+ * Copyright (C) 2001 Russell King
+ *           (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
@@ -26,7 +26,6 @@
 /* Print length for names. Extra 1 space for accomodating '\n' in prints */
 #define CPUFREQ_NAME_PLEN (CPUFREQ_NAME_LEN + 1)
 
-
 /*********************************************************************
  *                     CPUFREQ NOTIFIER INTERFACE                    *
  *********************************************************************/
@@ -71,6 +70,10 @@ struct cpufreq_governor;
 
 /* /sys/devices/system/cpu/cpufreq: entry point for global variables */
 extern struct kobject *cpufreq_global_kobject;
+int cpufreq_get_global_kobject(void);
+void cpufreq_put_global_kobject(void);
+int cpufreq_sysfs_create_file(const struct attribute *attr);
+void cpufreq_sysfs_remove_file(const struct attribute *attr);
 
 #define CPUFREQ_ETERNAL			(-1)
 struct cpufreq_cpuinfo {
@@ -107,6 +110,7 @@ struct cpufreq_policy {
 	unsigned int		policy; /* see above */
 	struct cpufreq_governor	*governor; /* see below */
 	void			*governor_data;
+	bool			governor_enabled; /* governor start/stop flag */
 
 	struct work_struct	update; /* if update_policy() needs to be
 					 * called, but you're in IRQ context */
@@ -148,17 +152,18 @@ struct cpufreq_freqs {
 	u8 flags;		/* flags of cpufreq_driver, see below. */
 };
 
-
 /**
- * cpufreq_scale - "old * mult / div" calculation for large values (32-bit-arch safe)
+ * cpufreq_scale - "old * mult / div" calculation for large values (32-bit-arch
+ * safe)
  * @old:   old value
  * @div:   divisor
  * @mult:  multiplier
  *
  *
- *    new = old * mult / div
+ * new = old * mult / div
  */
-static inline unsigned long cpufreq_scale(unsigned long old, u_int div, u_int mult)
+static inline unsigned long cpufreq_scale(unsigned long old, u_int div,
+		u_int mult)
 {
 #if BITS_PER_LONG == 32
 
@@ -211,14 +216,12 @@ extern int __cpufreq_driver_target(struct cpufreq_policy *policy,
 				   unsigned int target_freq,
 				   unsigned int relation);
 
-
 extern int __cpufreq_driver_getavg(struct cpufreq_policy *policy,
 				   unsigned int cpu);
 
 int cpufreq_register_governor(struct cpufreq_governor *governor);
 void cpufreq_unregister_governor(struct cpufreq_governor *governor);
 
-
 /*********************************************************************
  *                      CPUFREQ DRIVER INTERFACE                     *
  *********************************************************************/
@@ -229,7 +232,7 @@ void cpufreq_unregister_governor(struct cpufreq_governor *governor);
 struct freq_attr;
 
 struct cpufreq_driver {
-	struct module           *owner;
+	struct module		*owner;
 	char			name[CPUFREQ_NAME_LEN];
 	u8			flags;
 	/*
@@ -277,11 +280,11 @@ struct cpufreq_driver {
 int cpufreq_register_driver(struct cpufreq_driver *driver_data);
 int cpufreq_unregister_driver(struct cpufreq_driver *driver_data);
 
-
 void cpufreq_notify_transition(struct cpufreq_policy *policy,
 		struct cpufreq_freqs *freqs, unsigned int state);
 
-static inline void cpufreq_verify_within_limits(struct cpufreq_policy *policy, unsigned int min, unsigned int max)
+static inline void cpufreq_verify_within_limits(struct cpufreq_policy *policy,
+		unsigned int min, unsigned int max)
 {
 	if (policy->min < min)
 		policy->min = min;
@@ -337,12 +340,16 @@ const char *cpufreq_get_current_driver(void);
 /*********************************************************************
  *                        CPUFREQ 2.6. INTERFACE                     *
  *********************************************************************/
+u64 get_cpu_idle_time(unsigned int cpu, u64 *wall, int io_busy);
 int cpufreq_get_policy(struct cpufreq_policy *policy, unsigned int cpu);
 int cpufreq_update_policy(unsigned int cpu);
 bool have_governor_per_policy(void);
+struct kobject *get_governor_parent_kobj(struct cpufreq_policy *policy);
 
 #ifdef CONFIG_CPU_FREQ
-/* query the current CPU frequency (in kHz). If zero, cpufreq couldn't detect it */
+/*
+ * query the current CPU frequency (in kHz). If zero, cpufreq couldn't detect it
+ */
 unsigned int cpufreq_get(unsigned int cpu);
 #else
 static inline unsigned int cpufreq_get(unsigned int cpu)
@@ -351,7 +358,9 @@ static inline unsigned int cpufreq_get(unsigned int cpu)
 }
 #endif
 
-/* query the last known CPU freq (in kHz). If zero, cpufreq couldn't detect it */
+/*
+ * query the last known CPU freq (in kHz). If zero, cpufreq couldn't detect it
+ */
 #ifdef CONFIG_CPU_FREQ
 unsigned int cpufreq_quick_get(unsigned int cpu);
 unsigned int cpufreq_quick_get_max(unsigned int cpu);
@@ -366,16 +375,14 @@ static inline unsigned int cpufreq_quick_get_max(unsigned int cpu)
 }
 #endif
 
-
 /*********************************************************************
  *                       CPUFREQ DEFAULT GOVERNOR                    *
  *********************************************************************/
 
-
 /*
-  Performance governor is fallback governor if any other gov failed to
-  auto load due latency restrictions
-*/
+ * Performance governor is fallback governor if any other gov failed to auto
+ * load due latency restrictions
+ */
 #ifdef CONFIG_CPU_FREQ_GOV_PERFORMANCE
 extern struct cpufreq_governor cpufreq_gov_performance;
 #endif
@@ -395,7 +402,6 @@ extern struct cpufreq_governor cpufreq_gov_conservative;
 #define CPUFREQ_DEFAULT_GOVERNOR	(&cpufreq_gov_conservative)
 #endif
 
-
 /*********************************************************************
  *                     FREQUENCY TABLE HELPERS                       *
  *********************************************************************/
@@ -404,7 +410,7 @@ extern struct cpufreq_governor cpufreq_gov_conservative;
 #define CPUFREQ_TABLE_END     ~1
 
 struct cpufreq_frequency_table {
-	unsigned int	index;     /* any */
+	unsigned int	driver_data; /* driver specific data, not used by core */
 	unsigned int	frequency; /* kHz - doesn't need to be in ascending
 				    * order */
 };