6.15-stable review patch. If anyone has any objections, please let me know.
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From: Tarang Raval tarang.raval@siliconsignals.io
[ Upstream commit 01dfdf6a80c57151af0589af0db7adbbdd1361c7 ]
Runtime PM is fully initialized before calling v4l2_async_register_subdev_sensor(). Moving the runtime PM initialization earlier prevents potential access to an uninitialized or powered-down device.
Signed-off-by: Tarang Raval tarang.raval@siliconsignals.io Signed-off-by: Sakari Ailus sakari.ailus@linux.intel.com Signed-off-by: Hans Verkuil hverkuil@xs4all.nl Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/media/i2c/imx334.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/media/i2c/imx334.c b/drivers/media/i2c/imx334.c index a544fc3df39c2..b51721c01e1d6 100644 --- a/drivers/media/i2c/imx334.c +++ b/drivers/media/i2c/imx334.c @@ -1391,6 +1391,9 @@ static int imx334_probe(struct i2c_client *client) goto error_handler_free; }
+ pm_runtime_set_active(imx334->dev); + pm_runtime_enable(imx334->dev); + ret = v4l2_async_register_subdev_sensor(&imx334->sd); if (ret < 0) { dev_err(imx334->dev, @@ -1398,13 +1401,13 @@ static int imx334_probe(struct i2c_client *client) goto error_media_entity; }
- pm_runtime_set_active(imx334->dev); - pm_runtime_enable(imx334->dev); pm_runtime_idle(imx334->dev);
return 0;
error_media_entity: + pm_runtime_disable(imx334->dev); + pm_runtime_set_suspended(imx334->dev); media_entity_cleanup(&imx334->sd.entity); error_handler_free: v4l2_ctrl_handler_free(imx334->sd.ctrl_handler);