rtc/m48t59: use rtc_valid_tm() to check returned tm

Use rtc_valid_tm to check the returned struct rtc_time *tm, to avoid
returning a wrong tm value.

Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
Cc: Paul Gortmaker <p_gortmaker@yahoo.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>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/rtc/rtc-m48t59.c b/drivers/rtc/rtc-m48t59.c
index 0b6645509c86..a99a0b554eb8 100644
--- a/drivers/rtc/rtc-m48t59.c
+++ b/drivers/rtc/rtc-m48t59.c
@@ -105,7 +105,7 @@ static int m48t59_rtc_read_time(struct device *dev, struct rtc_time *tm)
         dev_dbg(dev, "RTC read time %04d-%02d-%02d %02d/%02d/%02d\n",
                 tm->tm_year + 1900, tm->tm_mon, tm->tm_mday,
                 tm->tm_hour, tm->tm_min, tm->tm_sec);
-        return 0;
+        return rtc_valid_tm(tm);
 }
 
 static int m48t59_rtc_set_time(struct device *dev, struct rtc_time *tm)
@@ -196,7 +196,7 @@ static int m48t59_rtc_readalarm(struct device *dev, struct rtc_wkalrm *alrm)
         dev_dbg(dev, "RTC read alarm time %04d-%02d-%02d %02d/%02d/%02d\n",
                 tm->tm_year + 1900, tm->tm_mon, tm->tm_mday,
                 tm->tm_hour, tm->tm_min, tm->tm_sec);
-        return 0;
+        return rtc_valid_tm(tm);
 }
 
 /*