From: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Date: Fri, 17 Jan 2014 09:22:47 +0000 (-0300)
Subject: [media] mt9v032: Check return value of clk_prepare_enable/clk_set_rate
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=79019190a4c3a082c739cf7cc73a040c48b333bb;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[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 36c504b78f2c..40172b8d8ea2 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 */