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Input: samsung-keypad - use struct_size() helper

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When allocating memory for the keypad use struct_size() helper to be
protected from overflows.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240819045813.2154642-5-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Dmitry Torokhov 2024-08-18 21:58:01 -07:00
parent 706a066328
commit 647fc2bfe2
1 changed files with 3 additions and 3 deletions
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6
drivers/input/keyboard/samsung-keypad.c
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@ -318,7 +318,6 @@ static int samsung_keypad_probe(struct platform_device *pdev)
struct resource *res;
struct input_dev *input_dev;
unsigned int row_shift;
unsigned int keymap_size;
int error;
pdata = dev_get_platdata(&pdev->dev);
@ -345,9 +344,10 @@ static int samsung_keypad_probe(struct platform_device *pdev)
pdata->cfg_gpio(pdata->rows, pdata->cols);
row_shift = get_count_order(pdata->cols);
keymap_size = (pdata->rows << row_shift) * sizeof(keypad->keycodes[0]);
keypad = devm_kzalloc(&pdev->dev, sizeof(*keypad) + keymap_size,
keypad = devm_kzalloc(&pdev->dev,
struct_size(keypad, keycodes,
pdata->rows << row_shift),
GFP_KERNEL);
if (!keypad)
return -ENOMEM;