[PATCH] lib: fwts_wakealarm: memset a rtc_tm struct to keep static analyzers happy

[Colin King]

From: Colin Ian King <colin.king at canonical.com>

Coverity throws a warning of a potential use of unitialized fields
in the rtc_tm struct, so memset it to zero before calling the ioctl.

Signed-off-by: Colin Ian King <colin.king at canonical.com>
---
 src/lib/src/fwts_wakealarm.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/lib/src/fwts_wakealarm.c b/src/lib/src/fwts_wakealarm.c
index 43718707..5c4c9375 100644
--- a/src/lib/src/fwts_wakealarm.c
+++ b/src/lib/src/fwts_wakealarm.c
@@ -41,6 +41,7 @@ int fwts_wakealarm_get(fwts_framework *fw, struct rtc_time *rtc_tm)
 	int fd;
 	int ret = FWTS_OK;
 
+	(void)memset(rtc_tm, 0, sizeof(*rtc_tm));
 	if ((fd = open(fwts_rtc, O_RDWR)) < 0) {
 		fwts_log_error(fw, "Cannot access Real Time Clock device %s.", fwts_rtc);
 		return FWTS_ERROR;
@@ -92,6 +93,7 @@ int fwts_wakealarm_trigger(fwts_framework *fw, const uint32_t seconds)
 		return FWTS_ERROR;
 	}
 
+	(void)memset(&rtc_tm, 0, sizeof(rtc_tm));
 	if (ioctl(fd, RTC_RD_TIME, &rtc_tm) < 0) {
 		fwts_log_error(fw, "Cannot read Real Time Clock with ioctl RTC_RD_TIME %s.", fwts_rtc);
 		ret = FWTS_ERROR;
-- 
2.25.1