fm10k: fix incorrect DIR_NEVATIVE bit in 1588 code

The SYSTIME_CFG.Adjust Direction bit is actually supposed to indicate
that the adjustment is positive. Fix the code to align correctly with
hardware and documentation.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/fm10k/fm10k_pf.c

@@ -1792,8 +1792,8 @@ static s32 fm10k_adjust_systime_pf(struct fm10k_hw *hw, s32 ppb)
 	if (systime_adjust > FM10K_SW_SYSTIME_ADJUST_MASK)
 		return FM10K_ERR_PARAM;
 
-	if (ppb < 0)
-		systime_adjust |= FM10K_SW_SYSTIME_ADJUST_DIR_NEGATIVE;
+	if (ppb > 0)
+		systime_adjust |= FM10K_SW_SYSTIME_ADJUST_DIR_POSITIVE;
 
 	fm10k_write_sw_reg(hw, FM10K_SW_SYSTIME_ADJUST, (u32)systime_adjust);
 

drivers/net/ethernet/intel/fm10k/fm10k_type.h

@@ -369,7 +369,7 @@ struct fm10k_hw;
 /* Registers contained in BAR 4 for Switch management */
 #define FM10K_SW_SYSTIME_ADJUST	0x0224D
 #define FM10K_SW_SYSTIME_ADJUST_MASK		0x3FFFFFFF
-#define FM10K_SW_SYSTIME_ADJUST_DIR_NEGATIVE	0x80000000
+#define FM10K_SW_SYSTIME_ADJUST_DIR_POSITIVE	0x80000000
 #define FM10K_SW_SYSTIME_PULSE(_n)	((_n) + 0x02252)
 
 enum fm10k_int_source {