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authorArvind Yadav <arvind.yadav.cs@gmail.com>2017-08-31 11:39:13 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2017-08-31 11:57:35 -0700
commit117b2dc58c07924da7f545f93a1f5862f46e14f7 (patch)
treedac55bdad92dd0feab8cf8c4818d7d40b45bba9b /drivers/input
parent8a7f102c4b15940e43b712d35da357a2c05ffb84 (diff)
Input: pxa27x_keypad - handle return value of clk_prepare_enable
clk_prepare_enable() can fail here and we must check its return value. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input')
-rw-r--r--drivers/input/keyboard/pxa27x_keypad.c15
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/input/keyboard/pxa27x_keypad.c b/drivers/input/keyboard/pxa27x_keypad.c
index 3841fa30db33..d0bdaeadf86d 100644
--- a/drivers/input/keyboard/pxa27x_keypad.c
+++ b/drivers/input/keyboard/pxa27x_keypad.c
@@ -644,9 +644,12 @@ static void pxa27x_keypad_config(struct pxa27x_keypad *keypad)
static int pxa27x_keypad_open(struct input_dev *dev)
{
struct pxa27x_keypad *keypad = input_get_drvdata(dev);
-
+ int ret;
/* Enable unit clock */
- clk_prepare_enable(keypad->clk);
+ ret = clk_prepare_enable(keypad->clk);
+ if (ret)
+ return ret;
+
pxa27x_keypad_config(keypad);
return 0;
@@ -683,6 +686,7 @@ static int pxa27x_keypad_resume(struct device *dev)
struct platform_device *pdev = to_platform_device(dev);
struct pxa27x_keypad *keypad = platform_get_drvdata(pdev);
struct input_dev *input_dev = keypad->input_dev;
+ int ret = 0;
/*
* If the keypad is used as wake up source, the clock is not turned
@@ -695,14 +699,15 @@ static int pxa27x_keypad_resume(struct device *dev)
if (input_dev->users) {
/* Enable unit clock */
- clk_prepare_enable(keypad->clk);
- pxa27x_keypad_config(keypad);
+ ret = clk_prepare_enable(keypad->clk);
+ if (!ret)
+ pxa27x_keypad_config(keypad);
}
mutex_unlock(&input_dev->mutex);
}
- return 0;
+ return ret;
}
#endif