drivers/rtc/rtc-da9052.c: add constraints to set valid year
Signed-off-by: Adam Ward <adam.ward.opensource@diasemi.com>
Tested-by: Adam Ward <adam.ward.opensource@diasemi.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/rtc/rtc-da9052.c b/drivers/rtc/rtc-da9052.c
index ead02fa..acc3e5a 100644
--- a/drivers/rtc/rtc-da9052.c
+++ b/drivers/rtc/rtc-da9052.c
@@ -206,6 +206,10 @@
uint8_t v[6];
int ret;
+ /* DA9052 only has 6 bits for year - to represent 2000-2063 */
+ if ((tm->tm_year < 100) || (tm->tm_year > 163))
+ return -EINVAL;
+
rtc = dev_get_drvdata(dev);
v[0] = tm->tm_sec;
@@ -243,6 +247,10 @@
struct rtc_time *tm = &alrm->time;
struct da9052_rtc *rtc = dev_get_drvdata(dev);
+ /* DA9052 only has 6 bits for year - to represent 2000-2063 */
+ if ((tm->tm_year < 100) || (tm->tm_year > 163))
+ return -EINVAL;
+
ret = da9052_rtc_enable_alarm(rtc, 0);
if (ret < 0)
return ret;