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rtc-s3c: Use is_power_of_2() macro for simplicity.

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Use is_power_of_2() macro for simplicity.

Signed-off-by: Robert P. J. Day <[email protected]>
Signed-off-by: Alessandro Zummo <[email protected]>
Cc: David Brownell <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Robert P. J. Day 2008-02-06 01:38:42 -08:00 • committed by Linus Torvalds
commit 9974b6ea7b
1 changed files with 2 additions and 3 deletions
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5
drivers/rtc/rtc-s3c.c
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@ -20,6 +20,7 @@
#include <linux/rtc.h>
#include <linux/bcd.h>
#include <linux/clk.h>
#include <linux/log2.h>
#include <asm/hardware.h>
#include <asm/uaccess.h>
@ -309,9 +310,7 @@ static int s3c_rtc_ioctl(struct device *dev,
break;
case RTC_IRQP_SET:
/* check for power of 2 */
if ((arg & (arg-1)) != 0 || arg < 1) {
if (!is_power_of_2(arg)) {
ret = -EINVAL;
goto exit;
}