mmc: sdhci: move setting mmc->actual_clock into set_clock handlers

Move the setting of mmc->actual_clock to zero into the set_clock
handlers themselves.  This will allow us to clean up the calling
logic for the set_clock() method, and turn sdhci_set_clock() into
a library function.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Tested-by: Markus Pargmann <mpa@pengutronix.de>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>

drivers/mmc/host/sdhci-cns3xxx.c

@@ -30,6 +30,8 @@ static void sdhci_cns3xxx_set_clock(struct sdhci_host *host, unsigned int clock)
 	u16 clk;
 	unsigned long timeout;
 
+	host->mmc->actual_clock = 0;
+
 	sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);
 
 	if (clock == 0)

drivers/mmc/host/sdhci-esdhc-imx.c

@@ -600,6 +600,8 @@ static inline void esdhc_pltfm_set_clock(struct sdhci_host *host,
 	u32 temp, val;
 
 	if (clock == 0) {
+		host->mmc->actual_clock = 0;
+
 		if (esdhc_is_usdhc(imx_data)) {
 			val = readl(host->ioaddr + ESDHC_VENDOR_SPEC);
 			writel(val & ~ESDHC_VENDOR_SPEC_FRC_SDCLK_ON,

drivers/mmc/host/sdhci-of-esdhc.c

@@ -199,11 +199,12 @@ static unsigned int esdhc_of_get_min_clock(struct sdhci_host *host)
 
 static void esdhc_of_set_clock(struct sdhci_host *host, unsigned int clock)
 {
-
 	int pre_div = 2;
 	int div = 1;
 	u32 temp;
 
+	host->mmc->actual_clock = 0;
+
 	if (clock == 0)
 		return;
 

drivers/mmc/host/sdhci-s3c.c

@@ -158,6 +158,8 @@ static void sdhci_s3c_set_clock(struct sdhci_host *host, unsigned int clock)
 	int src;
 	u32 ctrl;
 
+	host->mmc->actual_clock = 0;
+
 	/* don't bother if the clock is going off. */
 	if (clock == 0)
 		return;
@@ -292,6 +294,8 @@ static void sdhci_cmu_set_clock(struct sdhci_host *host, unsigned int clock)
 	unsigned long timeout;
 	u16 clk = 0;
 
+	host->mmc->actual_clock = 0;
+
 	/* If the clock is going off, set to 0 at clock control register */
 	if (clock == 0) {
 		sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);

drivers/mmc/host/sdhci.c

@@ -1119,14 +1119,14 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
 	u16 clk = 0;
 	unsigned long timeout;
 
-	host->mmc->actual_clock = 0;
-
 	if (host->ops->set_clock) {
 		host->ops->set_clock(host, clock);
 		if (host->quirks & SDHCI_QUIRK_NONSTANDARD_CLOCK)
 			return;
 	}
 
+	host->mmc->actual_clock = 0;
+
 	sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);
 
 	if (clock == 0)