[PATCH RESEND] ARM: pxa27x_keypad: clear pending interrupts on keypad config

[Vasily Khoruzhick]

Bootloader can leave interrupt bit pending, and it confuses driver.

Signed-off-by: Vasily Khoruzhick <anarsoul at gmail.com>
---
Rebased against v3.7-rc2

 drivers/input/keyboard/pxa27x_keypad.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/input/keyboard/pxa27x_keypad.c b/drivers/input/keyboard/pxa27x_keypad.c
index 803ff6f..cad9d5d 100644
--- a/drivers/input/keyboard/pxa27x_keypad.c
+++ b/drivers/input/keyboard/pxa27x_keypad.c
@@ -368,6 +368,9 @@ static void pxa27x_keypad_config(struct pxa27x_keypad *keypad)
 	unsigned int mask = 0, direct_key_num = 0;
 	unsigned long kpc = 0;
 
+	/* clear pending interrupt bit */
+	keypad_readl(KPC);
+
 	/* enable matrix keys with automatic scan */
 	if (pdata->matrix_key_rows && pdata->matrix_key_cols) {
 		kpc |= KPC_ASACT | KPC_MIE | KPC_ME | KPC_MS_ALL;
-- 
1.7.12.4