From 000339cb5d27f7c5b04ca9cecd75a3b73f7b8c34 Mon Sep 17 00:00:00 2001 From: Bingbu Cao Date: Wed, 22 Nov 2023 17:46:08 +0800 Subject: [PATCH] media: ov13b10: Enable runtime PM before registering async sub-device commit 7b0454cfd8edb3509619407c3b9f78a6d0dee1a5 upstream. 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. Fixes: 7ee850546822 ("media: Add sensor driver support for the ov13b10 camera.") Cc: stable@vger.kernel.org Signed-off-by: Bingbu Cao Signed-off-by: Sakari Ailus Signed-off-by: Hans Verkuil Signed-off-by: Greg Kroah-Hartman --- 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 8ebdb32..124eaa4f 100644 --- a/drivers/media/i2c/ov13b10.c +++ b/drivers/media/i2c/ov13b10.c @@ -1536,24 +1536,27 @@ 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); pm_runtime_idle(&client->dev); + ret = v4l2_async_register_subdev_sensor(&ov13b->sd); + if (ret < 0) + goto error_media_entity_runtime_pm; + 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: @@ -1576,6 +1579,7 @@ static void ov13b10_remove(struct i2c_client *client) ov13b10_free_controls(ov13b); pm_runtime_disable(&client->dev); + pm_runtime_set_suspended(&client->dev); } static DEFINE_RUNTIME_DEV_PM_OPS(ov13b10_pm_ops, ov13b10_suspend, -- 2.7.4