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| author | Axel Lin <axel.lin@gmail.com> | 2011-04-11 23:50:02 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2011-04-11 23:51:18 -0700 |
| commit | c68b2081250a87ba9b9a173faa5a600cc684602e (patch) | |
| tree | febeb2fe8c5e37f1f4d3559cb592cd9365f82100 | |
| parent | 908433833cac977563e9bef8b206990d846876b4 (diff) | |
| download | linux-c68b2081250a87ba9b9a173faa5a600cc684602e.tar.gz | |
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 <axel.lin@gmail.com> Reviewed-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
| -rw-r--r-- | drivers/input/keyboard/twl4030_keypad.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/input/keyboard/twl4030_keypad.c b/drivers/input/keyboard/twl4030_keypad.c index cc06c4b2f920..a26922cf0e84 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) { |