drivers/rtc/rtc-stmp3xxx.c: check the return value from stmp_reset_block()

stmp_reset_block() may fail, so let's check its return value and
propagate it in the case of error.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/rtc/rtc-stmp3xxx.c b/drivers/rtc/rtc-stmp3xxx.c
index 90a3e864b8fe..767fee2ab340 100644
--- a/drivers/rtc/rtc-stmp3xxx.c
+++ b/drivers/rtc/rtc-stmp3xxx.c
@@ -261,7 +261,12 @@ static int stmp3xxx_rtc_probe(struct platform_device *pdev)
 
         platform_set_drvdata(pdev, rtc_data);
 
-        stmp_reset_block(rtc_data->io);
+        err = stmp_reset_block(rtc_data->io);
+        if (err) {
+                dev_err(&pdev->dev, "stmp_reset_block failed: %d\n", err);
+                return err;
+        }
+
         writel(STMP3XXX_RTC_PERSISTENT0_ALARM_EN |
                         STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE_EN |
                         STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE,