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path: root/drivers/rtc/rtc-s3c.c
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Diffstat (limited to 'drivers/rtc/rtc-s3c.c')
-rw-r--r--drivers/rtc/rtc-s3c.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c
index f59277bbedaa..e0d7b9991505 100644
--- a/drivers/rtc/rtc-s3c.c
+++ b/drivers/rtc/rtc-s3c.c
@@ -26,7 +26,7 @@
#include <asm/uaccess.h>
#include <asm/io.h>
#include <asm/irq.h>
-#include <asm/plat-s3c/regs-rtc.h>
+#include <plat/regs-rtc.h>
/* I have yet to find an S3C implementation with more than one
* of these rtc blocks in */
@@ -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;