Input: tsc2007 - make sure platform provides get_pendown_state()

The platform codes must provide get_pendown_state() for the driver
to work properly.

Signed-off-by: Kwangwoo Lee <kwangwoo.lee@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

diff --git a/drivers/input/touchscreen/tsc2007.c b/drivers/input/touchscreen/tsc2007.c
index 536668fbda227158beaeb0c7eec9478be72f4d56..edd4f64d1f43c97229fc69dbece9c4233ea8540c 100644 (file)
--- a/drivers/input/touchscreen/tsc2007.c
+++ b/drivers/input/touchscreen/tsc2007.c
@@ -256,7 +256,7 @@ static int tsc2007_probe(struct i2c_client *client,
        struct input_dev *input_dev;
        int err;
 
-       if (!pdata) {
+       if (!pdata || !pdata->get_pendown_state) {
                dev_err(&client->dev, "platform data is required!\n");
                return -EINVAL;
        }