X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=sound%2Fcore%2Frtctimer.c;h=7cd5e8f5d4cebc2375f7303ce00d48e09046fd96;hb=96b9709c9b47c1f9e8fd80e756e8eddcba68e818;hp=9f7b32e1ccdeb29a7122aaea0f485a0dafa144c5;hpb=691ce26e4066147ab75366307c5c65d26c7fd805;p=linux-2.6-omap-h63xx.git

diff --git a/sound/core/rtctimer.c b/sound/core/rtctimer.c
index 9f7b32e1ccd..7cd5e8f5d4c 100644
--- a/sound/core/rtctimer.c
+++ b/sound/core/rtctimer.c
@@ -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;