[PATCH] mfd: sm501: Use DIV_ROUND_CLOSEST
From: Axel Lin
Date: Sun Mar 11 2012 - 22:12:42 EST
Use DIV_ROUND_CLOSEST to replace sm501fb_round_div function.
Signed-off-by: Axel Lin <axel.lin@xxxxxxxxx>
---
drivers/mfd/sm501.c | 10 +---------
1 files changed, 1 insertions(+), 9 deletions(-)
diff --git a/drivers/mfd/sm501.c b/drivers/mfd/sm501.c
index f4d8611..d927dd4 100644
--- a/drivers/mfd/sm501.c
+++ b/drivers/mfd/sm501.c
@@ -387,14 +387,6 @@ int sm501_unit_power(struct device *dev, unsigned int unit, unsigned int to)
EXPORT_SYMBOL_GPL(sm501_unit_power);
-
-/* Perform a rounded division. */
-static long sm501fb_round_div(long num, long denom)
-{
- /* n / d + 1 / 2 = (2n + d) / 2d */
- return (2 * num + denom) / (2 * denom);
-}
-
/* clock value structure. */
struct sm501_clock {
unsigned long mclk;
@@ -428,7 +420,7 @@ static int sm501_calc_clock(unsigned long freq,
/* try all 8 shift values.*/
for (shift = 0; shift < 8; shift++) {
/* Calculate difference to requested clock */
- diff = sm501fb_round_div(mclk, divider << shift) - freq;
+ diff = DIV_ROUND_CLOSEST(mclk, divider << shift) - freq;
if (diff < 0)
diff = -diff;
--
1.7.5.4
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