[PATCH] ARM: pxa27x_keypad: clear pending interrupts on keypad config
From: anarsoul@gmail.com (Vasily Khoruzhick)
Date: 2012-02-26 13:50:50
Also in:
linux-input
Subsystem:
input (keyboard, mouse, joystick, touchscreen) drivers, the rest · Maintainers:
Dmitry Torokhov, Linus Torvalds
Bootloader can leave interrupt bit pending, and it confuses driver. Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com> --- 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 eca6ae6..a5f198f 100644
--- a/drivers/input/keyboard/pxa27x_keypad.c
+++ b/drivers/input/keyboard/pxa27x_keypad.c@@ -360,6 +360,9 @@ 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;
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1.7.9.2