Commit 829ecbcb authored by Axel Lin's avatar Axel Lin Committed by Samuel Ortiz
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mfd: Use DIV_ROUND_CLOSEST for sm501 clock 



Use DIV_ROUND_CLOSEST to replace sm501fb_round_div function.

Signed-off-by: default avatarAxel Lin <axel.lin@gmail.com>
Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent 1b1247dd

drivers/mfd/sm501.c

+1 −9
Original line number Original line Diff line number Diff line
@@ -387,14 +387,6 @@ int sm501_unit_power(struct device *dev, unsigned int unit, unsigned int to) 




EXPORT_SYMBOL_GPL(sm501_unit_power);

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. */

/* clock value structure. */

struct sm501_clock {

struct sm501_clock {

	unsigned long mclk;

	unsigned long mclk;
@@ -428,7 +420,7 @@ static int sm501_calc_clock(unsigned long freq, 
		/* try all 8 shift values.*/

		/* try all 8 shift values.*/

		for (shift = 0; shift < 8; shift++) {

		for (shift = 0; shift < 8; shift++) {

			/* Calculate difference to requested clock */

			/* Calculate difference to requested clock */

			diff = sm501fb_round_div(mclk, divider << shift) - freq;

			diff = DIV_ROUND_CLOSEST(mclk, divider << shift) - freq;

			if (diff < 0)

			if (diff < 0)

				diff = -diff;

				diff = -diff;