[PATCH] Input: gpio_keys - fix warning regarding uninitialized 'button' variable

[Fabio Estevam <fabio.estevam@freescale.com>]

Commit af906faabcf91eb1 ("Input: gpio_keys - fix warning regarding uninitialized
'irq' variable") introduced the following build warning:

drivers/input/keyboard/gpio_keys.c:625:16: warning: 'button' may be used uninitialized in this function [-Wmaybe-uninitialized]

Move the 'button' initialization to a proper location to avoid such warning.

Reported-by: Olof's autobuilder <build@lixom.net>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
---
 drivers/input/keyboard/gpio_keys.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c
index fb8256f..28ac922 100644
--- a/drivers/input/keyboard/gpio_keys.c
+++ b/drivers/input/keyboard/gpio_keys.c
@@ -621,6 +621,8 @@ gpio_keys_get_devtree_pdata(struct device *dev)
 		int gpio = -1;
 		enum of_gpio_flags flags;
 
+		button = &pdata->buttons[i++];
+
 		if (!of_find_property(pp, "gpios", NULL)) {
 			button->irq = irq_of_parse_and_map(pp, 0);
 			if (button->irq == 0) {
@@ -640,8 +642,6 @@ gpio_keys_get_devtree_pdata(struct device *dev)
 			}
 		}
 
-		button = &pdata->buttons[i++];
-
 		button->gpio = gpio;
 		button->active_low = flags & OF_GPIO_ACTIVE_LOW;
 
-- 
1.9.1