Input: gpio_keys_polled - request GPIO pin as input.

GPIOF_IN flag was lost in:
Commit 633a21d80b4a("input: gpio_keys_polled: Add support for GPIO
descriptors").

Without this flag, legacy code path (for non-descriptor GPIO declarations)
would configure GPIO as output (0 meaning GPIOF_DIR_OUT | GPIOF_INIT_LOW).

Cc: stable@vger.kernel.org
Signed-off-by: Vincent Pelletier <plr.vincent@gmail.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

diff --git a/drivers/input/keyboard/gpio_keys_polled.c b/drivers/input/keyboard/gpio_keys_polled.c
index 90df4df..959b826 100644 (file)
--- a/drivers/input/keyboard/gpio_keys_polled.c
+++ b/drivers/input/keyboard/gpio_keys_polled.c
@@ -246,7 +246,7 @@ static int gpio_keys_polled_probe(struct platform_device *pdev)
                 * convert it to descriptor.
                 */
                if (!button->gpiod && gpio_is_valid(button->gpio)) {
-                       unsigned flags = 0;
+                       unsigned flags = GPIOF_IN;
 
                        if (button->active_low)
                                flags |= GPIOF_ACTIVE_LOW;