Messages in this thread Patch in this message | | | From | Arvind Yadav <> | Subject | [PATCH 2/3 v2] Input: twl4030_keypad: Fix platform_get_irq's error checking | Date | Sat, 18 Nov 2017 02:28:49 +0530 |
| |
The platform_get_irq() function returns negative if an error occurs. zero or positive number on success. platform_get_irq() error checking for zero is not correct.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> --- changes in v2 : kp->irq is unsigned. use temporary int variable irq.
drivers/input/keyboard/twl4030_keypad.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/input/keyboard/twl4030_keypad.c b/drivers/input/keyboard/twl4030_keypad.c index f9f98ef..d921238 100644 --- a/drivers/input/keyboard/twl4030_keypad.c +++ b/drivers/input/keyboard/twl4030_keypad.c @@ -341,6 +341,7 @@ static int twl4030_kp_probe(struct platform_device *pdev) struct input_dev *input; u8 reg; int error; + int irq; kp = devm_kzalloc(&pdev->dev, sizeof(*kp), GFP_KERNEL); if (!kp) @@ -388,11 +389,12 @@ static int twl4030_kp_probe(struct platform_device *pdev) return -EINVAL; } - kp->irq = platform_get_irq(pdev, 0); - if (!kp->irq) { + irq = platform_get_irq(pdev, 0); + if (irq < 0) { dev_err(&pdev->dev, "no keyboard irq assigned\n"); - return -EINVAL; + return irq; } + kp->irq = irq; error = matrix_keypad_build_keymap(keymap_data, NULL, TWL4030_MAX_ROWS, -- 2.7.4
| |