[media] mt9v032: Check return value of clk_prepare_enable/clk_set_rate

clk_set_rate(), clk_prepare_enable() functions can fail, so check the return
values to avoid surprises.

Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

diff --git a/drivers/media/i2c/mt9v032.c b/drivers/media/i2c/mt9v032.c
index 36c504b78f2c6233b711fbe46a7c509aae7f101e..40172b8d8ea227f284cb56e50dfe7ac637d71c24 100644 (file)
--- a/drivers/media/i2c/mt9v032.c
+++ b/drivers/media/i2c/mt9v032.c
@@ -317,8 +317,14 @@ static int mt9v032_power_on(struct mt9v032 *mt9v032)
        struct i2c_client *client = v4l2_get_subdevdata(&mt9v032->subdev);
        int ret;
 
-       clk_set_rate(mt9v032->clk, mt9v032->sysclk);
-       clk_prepare_enable(mt9v032->clk);
+       ret = clk_set_rate(mt9v032->clk, mt9v032->sysclk);
+       if (ret < 0)
+               return ret;
+
+       ret = clk_prepare_enable(mt9v032->clk);
+       if (ret)
+               return ret;
+
        udelay(1);
 
        /* Reset the chip and stop data read out */