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| author |   Vasily Khoruzhick <anarsoul@gmail.com> | 2012-10-29 23:45:09 -0700 |
|---|---|---|
| committer |   Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2012-10-30 00:10:49 -0700 |
| commit | 904adede088f2a6976e417d1d5cf72c9fe686814 (patch) | |
| tree | 0d9ad8997d73d8c1e2690966ccd93d182ed64abd /drivers/input/keyboard/pxa27x_keypad.c | |
| parent | Input: wacom - correct bad Cintiq 24HD check (diff) | |
| download | linux-dev-904adede088f2a6976e417d1d5cf72c9fe686814.tar.xz linux-dev-904adede088f2a6976e417d1d5cf72c9fe686814.zip | |
Input: pxa27x_keypad - clear pending interrupts on keypad config
Bootloader can leave interrupt bit pending, and it confuses driver.
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/input/keyboard/pxa27x_keypad.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/input/keyboard/pxa27x_keypad.c b/drivers/input/keyboard/pxa27x_keypad.c index 803ff6fe021e..cad9d5dd5973 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; |