From: Axel Lin Date: Tue, 12 Apr 2011 06:50:02 +0000 (-0700) Subject: Input: twl4030_keypad - fix potential NULL dereference in twl4030_kp_probe() X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c68b2081250a87ba9b9a173faa5a600cc684602e;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git Input: twl4030_keypad - fix potential NULL dereference in twl4030_kp_probe() We should first check whether platform data is NULL or not, before dereferencing it to get the keymap. Signed-off-by: Axel Lin Reviewed-by: Felipe Balbi Signed-off-by: Dmitry Torokhov --- diff --git a/drivers/input/keyboard/twl4030_keypad.c b/drivers/input/keyboard/twl4030_keypad.c index cc06c4b2f92..a26922cf0e8 100644 --- a/drivers/input/keyboard/twl4030_keypad.c +++ b/drivers/input/keyboard/twl4030_keypad.c @@ -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) {