From: Ondrej Jirman <megi@xff.cz>
Date: Sat, 17 Feb 2024 18:49:11 +0000 (+0100)
Subject: media: i2c: dw9714: Fix occasional probe errors
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=9d00ccabfbb522bb7a23ed329be2bf6aee04fe06;p=linux.git

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 cc09b32ede601..84d29bcf0ccd4 100644
--- 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;