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).

Signed-off-by: Vincent Pelletier <plr.vinc...@gmail.com>
Reviewed-by: Mika Westerberg <mika.westerb...@linux.intel.com>
---
 drivers/input/keyboard/gpio_keys_polled.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/input/keyboard/gpio_keys_polled.c 
b/drivers/input/keyboard/gpio_keys_polled.c
index 097d721..c6dc644 100644
--- 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;
-- 
2.5.0

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