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Message-Id: <1389950567-32577-1-git-send-email-prabhakar.csengg@gmail.com> Date: Fri, 17 Jan 2014 14:52:47 +0530 From: Prabhakar Lad <prabhakar.csengg@...il.com> To: Laurent Pinchart <laurent.pinchart@...asonboard.com> Cc: LMML <linux-media@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>, "Lad, Prabhakar" <prabhakar.csengg@...il.com> Subject: [PATCH] media: i2c: mt9v032: Check return value of clk_prepare_enable/clk_set_rate From: "Lad, Prabhakar" <prabhakar.csengg@...il.com> clk_set_rate(), clk_prepare_enable() functions can fail, so check the return values to avoid surprises. Signed-off-by: Lad, Prabhakar <prabhakar.csengg@...il.com> --- drivers/media/i2c/mt9v032.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/media/i2c/mt9v032.c b/drivers/media/i2c/mt9v032.c index 36c504b..40172b8 100644 --- 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 */ -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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