Merge branch 'fix/hda' into for-linus

[cascardo/linux.git] / drivers / rtc / rtc-s3c.c

diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c
index 7a568be..e0d7b99 100644 (file)
--- a/drivers/rtc/rtc-s3c.c
+++ b/drivers/rtc/rtc-s3c.c
@@ -94,6 +94,9 @@ static int s3c_rtc_setfreq(struct device *dev, int freq)
 {
        unsigned int tmp;
 
+       if (!is_power_of_2(freq))
+               return -EINVAL;
+
        spin_lock_irq(&s3c_rtc_pie_lock);
 
        tmp = readb(s3c_rtc_base + S3C2410_TICNT) & S3C2410_TICNT_ENABLE;