From ae824c484c85d77e3f272515aafb410bbade13fa Mon Sep 17 00:00:00 2001 From: Adam Ward Date: Thu, 16 Apr 2015 12:45:29 -0700 Subject: drivers/rtc/rtc-da9052.c: add constraints to set valid year Signed-off-by: Adam Ward Tested-by: Adam Ward Cc: Alessandro Zummo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-da9052.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/rtc/rtc-da9052.c b/drivers/rtc/rtc-da9052.c index ead02fad2de5..acc3e5a1f61a 100644 --- a/drivers/rtc/rtc-da9052.c +++ b/drivers/rtc/rtc-da9052.c @@ -206,6 +206,10 @@ static int da9052_rtc_set_time(struct device *dev, struct rtc_time *tm) 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 @@ static int da9052_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) 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; -- cgit v1.2.3