Input: ads7846 - fix gpio_pendown configuration

The pendown gpio was requested but not configured for input.
Configure it for input.

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c
index e4ee43e159d2..beb754ff931b 100644
--- a/drivers/input/touchscreen/ads7846.c
+++ b/drivers/input/touchscreen/ads7846.c
@@ -966,6 +966,13 @@ static int __devinit ads7846_setup_pendown(struct spi_device *spi, struct ads784
                                 pdata->gpio_pendown);
                         return err;
                 }
+                err = gpio_direction_input(pdata->gpio_pendown);
+                if (err) {
+                        dev_err(&spi->dev, "failed to setup pendown GPIO%d\n",
+                                pdata->gpio_pendown);
+                        gpio_free(pdata->gpio_pendown);
+                        return err;
+                }
 
                 ts->gpio_pendown = pdata->gpio_pendown;