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authorUwe Kleine-König <uwe@kleine-koenig.org>2016-05-11 09:11:23 +0200
committerAlexandre Belloni <alexandre.belloni@free-electrons.com>2016-05-30 01:37:11 +0200
commitd68778b80dd78ad6ed998397af182163d0ef16b0 (patch)
treea3d4d8140133aec887dce8b3b9a9888ef2005c9b /drivers/rtc/interface.c
parent1a695a905c18548062509178b98bc91e67510864 (diff)
downloadlinux-d68778b80dd78ad6ed998397af182163d0ef16b0.tar.bz2
rtc: initialize output parameter for read alarm to "uninitialized"
rtc drivers are supposed to set values they don't support to -1. To simplify this for drivers and also make it harder for them to get it wrong initialize the values to -1. Signed-off-by: Uwe Kleine-König <uwe@kleine-koenig.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Diffstat (limited to 'drivers/rtc/interface.c')
-rw-r--r--drivers/rtc/interface.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c
index 9ef5f6f89f98..99475908e556 100644
--- a/drivers/rtc/interface.c
+++ b/drivers/rtc/interface.c
@@ -104,7 +104,17 @@ static int rtc_read_alarm_internal(struct rtc_device *rtc, struct rtc_wkalrm *al
else if (!rtc->ops->read_alarm)
err = -EINVAL;
else {
- memset(alarm, 0, sizeof(struct rtc_wkalrm));
+ alarm->enabled = 0;
+ alarm->pending = 0;
+ alarm->time.tm_sec = -1;
+ alarm->time.tm_min = -1;
+ alarm->time.tm_hour = -1;
+ alarm->time.tm_mday = -1;
+ alarm->time.tm_mon = -1;
+ alarm->time.tm_year = -1;
+ alarm->time.tm_wday = -1;
+ alarm->time.tm_yday = -1;
+ alarm->time.tm_isdst = -1;
err = rtc->ops->read_alarm(rtc->dev.parent, alarm);
}