drivers/rtc/rtc-mxc.c: check the return value from clk_prepare_enable()

clk_prepare_enable() 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>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/rtc/rtc-mxc.c b/drivers/rtc/rtc-mxc.c
index a3ed1cf935ba..419874fefa4b 100644
--- a/drivers/rtc/rtc-mxc.c
+++ b/drivers/rtc/rtc-mxc.c
@@ -394,7 +394,10 @@ static int mxc_rtc_probe(struct platform_device *pdev)
                 return PTR_ERR(pdata->clk);
         }
 
-        clk_prepare_enable(pdata->clk);
+        ret = clk_prepare_enable(pdata->clk);
+        if (ret)
+                return ret;
+
         rate = clk_get_rate(pdata->clk);
 
         if (rate == 32768)