diff mbox series

[v2,3/4] Input: twl4030_keypad - Fix handling of platform_get_irq() error

Message ID 20200828145744.3636-3-krzk@kernel.org
State Accepted
Commit c277e1f0dc3c7d7b5b028e20dd414df241642036
Headers show
Series None | expand

Commit Message

Krzysztof Kozlowski Aug. 28, 2020, 2:57 p.m. UTC
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 <lkp@intel.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

---

Changes since v1:
1. Fix also casting return value to unsigned.
---
 drivers/input/keyboard/twl4030_keypad.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)
diff mbox series

Patch

diff --git a/drivers/input/keyboard/twl4030_keypad.c b/drivers/input/keyboard/twl4030_keypad.c
index af3a6824f1a4..77e0743a3cf8 100644
--- a/drivers/input/keyboard/twl4030_keypad.c
+++ b/drivers/input/keyboard/twl4030_keypad.c
@@ -50,7 +50,7 @@  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;
@@ -376,10 +376,8 @@  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,