From 318a9fcca34af64c2adfd7b5dbb520de796ebb1f Mon Sep 17 00:00:00 2001
From: "Robert P. J. Day" <rpjday@crashcourse.ca>
Date: Wed, 6 Feb 2008 01:38:42 -0800
Subject: [PATCH] --- yaml --- r: 83526 b: refs/heads/master c:
 9974b6ea7b85a32f34f824443f47aa501c85ee8f h: refs/heads/master v: v3

---
 [refs]                      | 2 +-
 trunk/drivers/rtc/rtc-s3c.c | 5 ++---
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/[refs] b/[refs]
index 129e424a2d0e..41315b1e4710 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 037e291cc77a4beb0379a8c74e3d82e49a476b84
+refs/heads/master: 9974b6ea7b85a32f34f824443f47aa501c85ee8f
diff --git a/trunk/drivers/rtc/rtc-s3c.c b/trunk/drivers/rtc/rtc-s3c.c
index e2041b4d0c85..86766f1f2496 100644
--- a/trunk/drivers/rtc/rtc-s3c.c
+++ b/trunk/drivers/rtc/rtc-s3c.c
@@ -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;
 		}