media: i2c: dw9714: Fix occasional probe errors

The powerup delay was not observed during probe, leading to occasional
I2C communication failures in RPM suspend callback. Power delay is
properly observed in resume callback already.

Signed-off-by: Ondrej Jirman <megi@xff.cz>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

diff --git a/drivers/media/i2c/dw9714.c b/drivers/media/i2c/dw9714.c
index cc09b32ede601d2709a48ac855abfb545a883af2..84d29bcf0ccd47a6c360bc4495531c6c3ff9d1ae 100644 (file)
--- a/drivers/media/i2c/dw9714.c
+++ b/drivers/media/i2c/dw9714.c
@@ -157,6 +157,8 @@ static int dw9714_probe(struct i2c_client *client)
                return rval;
        }
 
+       usleep_range(1000, 2000);
+
        v4l2_i2c_subdev_init(&dw9714_dev->sd, client, &dw9714_ops);
        dw9714_dev->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
                                V4L2_SUBDEV_FL_HAS_EVENTS;