Commit 62e96a1c authored by vignesh babu's avatar vignesh babu Committed by Jaroslav Kysela
Browse files

[ALSA] is_power_of_2 in rtctimer.c 



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

Signed-off-by: default avatarvignesh babu <vignesh.babu@wipro.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
Signed-off-by: default avatarJaroslav Kysela <perex@suse.cz>
parent ac519028

sound/core/rtctimer.c

+2 −1
Original line number Diff line number Diff line
@@ -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;