From: Krzysztof Kozlowski Date: Wed, 16 Sep 2020 00:56:19 +0000 (-0700) Subject: Input: twl4030_keypad - fix handling of platform_get_irq() error X-Git-Tag: v4.14.203~70 X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=c024b1a42ee4cb12636841aac98b8bc2f1c6934b;p=users%2Fdwmw2%2Flinux.git Input: twl4030_keypad - fix handling of platform_get_irq() error [ Upstream commit c277e1f0dc3c7d7b5b028e20dd414df241642036 ] platform_get_irq() returns -ERRNO on error. In such case casting to unsigned and comparing to 0 would pass the check. Fixes: 7abf38d6d13c ("Input: twl4030-keypad - add device tree support") Reported-by: kernel test robot Signed-off-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20200828145744.3636-3-krzk@kernel.org Signed-off-by: Dmitry Torokhov Signed-off-by: Sasha Levin --- diff --git a/drivers/input/keyboard/twl4030_keypad.c b/drivers/input/keyboard/twl4030_keypad.c index f9f98ef1d98e3..8677dbe0fd209 100644 --- a/drivers/input/keyboard/twl4030_keypad.c +++ b/drivers/input/keyboard/twl4030_keypad.c @@ -63,7 +63,7 @@ struct twl4030_keypad { bool autorepeat; unsigned int n_rows; unsigned int n_cols; - unsigned int irq; + int irq; struct device *dbg_dev; struct input_dev *input; @@ -389,10 +389,8 @@ static int twl4030_kp_probe(struct platform_device *pdev) } kp->irq = platform_get_irq(pdev, 0); - if (!kp->irq) { - dev_err(&pdev->dev, "no keyboard irq assigned\n"); - return -EINVAL; - } + if (kp->irq < 0) + return kp->irq; error = matrix_keypad_build_keymap(keymap_data, NULL, TWL4030_MAX_ROWS,