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Input: twl4030_keypad - fix potential NULL dereference in twl4030_kp_probe()

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We should first check whether platform data is NULL or not, before
dereferencing it to get the keymap.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Axel Lin 2011-04-11 23:50:02 -07:00 committed by Dmitry Torokhov
parent 908433833c
commit c68b208125
1 changed files with 3 additions and 1 deletions
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4
drivers/input/keyboard/twl4030_keypad.c
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@ -332,7 +332,7 @@ static int __devinit twl4030_kp_program(struct twl4030_keypad *kp)
static int __devinit twl4030_kp_probe(struct platform_device *pdev)
{
struct twl4030_keypad_data *pdata = pdev->dev.platform_data;
const struct matrix_keymap_data *keymap_data = pdata->keymap_data;
const struct matrix_keymap_data *keymap_data;
struct twl4030_keypad *kp;
struct input_dev *input;
u8 reg;
@ -344,6 +344,8 @@ static int __devinit twl4030_kp_probe(struct platform_device *pdev)
return -EINVAL;
}
keymap_data = pdata->keymap_data;
kp = kzalloc(sizeof(*kp), GFP_KERNEL);
input = input_allocate_device();
if (!kp || !input) {