[PATCH] input: fix variable type

[cgel.zte at gmail.com]

From: Lv Ruyi (CGEL ZTE) <lv.ruyi at zte.com.cn>

The irq is defined unsigned int. If the platform_get_irq return a negative
value, data type cast may result in error.

Reported-by: Zeal Robot <zealci at zte.com.cn>
Signed-off-by: Lv Ruyi (CGEL ZTE) <lv.ruyi at zte.com.cn>
---
 drivers/input/keyboard/mt6779-keypad.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/input/keyboard/mt6779-keypad.c b/drivers/input/keyboard/mt6779-keypad.c
index 5ff23250ed37..0dbbddc7f298 100644
--- a/drivers/input/keyboard/mt6779-keypad.c
+++ b/drivers/input/keyboard/mt6779-keypad.c
@@ -91,7 +91,7 @@ static void mt6779_keypad_clk_disable(void *data)
 static int mt6779_keypad_pdrv_probe(struct platform_device *pdev)
 {
 	struct mt6779_keypad *keypad;
-	unsigned int irq;
+	int irq;
 	u32 debounce;
 	bool wakeup;
 	int error;
-- 
2.25.1