[PATCH 02/10 v3] Input: omap4-keypad: Fix platform_get_irq's error checking

[Arvind Yadav]

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...@gmail.com>
---
changes in v2:
               Return irq insted of -EINVAL.
changes in v3 :
               Add failure case '<= 0' instead of '< 0'. IRQ0 is not valid.

 drivers/input/keyboard/omap4-keypad.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/input/keyboard/omap4-keypad.c 
b/drivers/input/keyboard/omap4-keypad.c
index 940d38b..9ad840c 100644
--- a/drivers/input/keyboard/omap4-keypad.c
+++ b/drivers/input/keyboard/omap4-keypad.c
@@ -251,9 +251,9 @@ static int omap4_keypad_probe(struct platform_device *pdev)
        }
 
        irq = platform_get_irq(pdev, 0);
-       if (!irq) {
+       if (irq <= 0) {
                dev_err(&pdev->dev, "no keyboard irq assigned\n");
-               return -EINVAL;
+               return irq;
        }
 
        keypad_data = kzalloc(sizeof(struct omap4_keypad), GFP_KERNEL);
-- 
2.7.4