From c68b2081250a87ba9b9a173faa5a600cc684602e Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Mon, 11 Apr 2011 23:50:02 -0700 Subject: [PATCH] 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 --- drivers/input/keyboard/twl4030_keypad.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) 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) { -- 2.20.1