From: Bingbu Cao <bingbu.cao@xxxxxxxxx> As the sensor device maybe accessible right after its async sub-device is registered, such as ipu-bridge will try to power up sensor by sensor's client device's runtime PM from the async notifier callback, if runtime PM is not enabled, it will fail. So runtime PM should be ready before its async sub-device is registered and accessible by others. Signed-off-by: Bingbu Cao <bingbu.cao@xxxxxxxxx> --- drivers/media/i2c/ov13b10.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/drivers/media/i2c/ov13b10.c b/drivers/media/i2c/ov13b10.c index dbc642c5995b..f5c6d4a5ae0b 100644 --- a/drivers/media/i2c/ov13b10.c +++ b/drivers/media/i2c/ov13b10.c @@ -1536,24 +1536,28 @@ static int ov13b10_probe(struct i2c_client *client) goto error_handler_free; } - ret = v4l2_async_register_subdev_sensor(&ov13b->sd); - if (ret < 0) - goto error_media_entity; /* * Device is already turned on by i2c-core with ACPI domain PM. * Enable runtime PM and turn off the device. */ - /* Set the device's state to active if it's in D0 state. */ if (full_power) pm_runtime_set_active(&client->dev); pm_runtime_enable(&client->dev); + + ret = v4l2_async_register_subdev_sensor(&ov13b->sd); + if (ret < 0) + goto error_media_entity_runtime_pm; + pm_runtime_idle(&client->dev); return 0; -error_media_entity: +error_media_entity_runtime_pm: + pm_runtime_disable(&client->dev); + if (full_power) + pm_runtime_set_suspended(&client->dev); media_entity_cleanup(&ov13b->sd.entity); error_handler_free: -- 2.42.0
