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[ALSA] is_power_of_2 in rtctimer.c

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Replacing (n & (n-1)) in the context of power of 2 checks
with is_power_of_2

Signed-off-by: vignesh babu <vignesh.babu@wipro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
This commit is contained in:
vignesh babu 2007-02-22 13:23:01 +01:00 committed by Jaroslav Kysela
parent ac519028a4
commit 62e96a1caa
1 changed files with 2 additions and 1 deletions
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3
sound/core/rtctimer.c
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@ -24,6 +24,7 @@
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/moduleparam.h>
#include <linux/log2.h>
#include <sound/core.h>
#include <sound/timer.h>
@ -129,7 +130,7 @@ static int __init rtctimer_init(void)
struct snd_timer *timer;
if (rtctimer_freq < 2 || rtctimer_freq > 8192 ||
(rtctimer_freq & (rtctimer_freq - 1)) != 0) {
!is_power_of_2(rtctimer_freq)) {
snd_printk(KERN_ERR "rtctimer: invalid frequency %d\n",
rtctimer_freq);
return -EINVAL;