This is a note to let you know that I've just added the patch titled
media: imx355: Enable runtime PM before registering async sub-device
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
media-imx355-enable-runtime-pm-before-registering-async-sub-device.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From efa5fe19c0a9199f49e36e1f5242ed5c88da617d Mon Sep 17 00:00:00 2001
From: Bingbu Cao <bingbu.cao@xxxxxxxxx>
Date: Wed, 22 Nov 2023 17:46:06 +0800
Subject: media: imx355: Enable runtime PM before registering async sub-device
From: Bingbu Cao <bingbu.cao@xxxxxxxxx>
commit efa5fe19c0a9199f49e36e1f5242ed5c88da617d 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: df0b5c4a7ddd ("media: add imx355 camera sensor driver")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Bingbu Cao <bingbu.cao@xxxxxxxxx>
Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/media/i2c/imx355.c | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)
--- a/drivers/media/i2c/imx355.c
+++ b/drivers/media/i2c/imx355.c
@@ -1784,10 +1784,6 @@ static int imx355_probe(struct i2c_clien
goto error_handler_free;
}
- ret = v4l2_async_register_subdev_sensor(&imx355->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.
@@ -1796,9 +1792,15 @@ static int imx355_probe(struct i2c_clien
pm_runtime_enable(&client->dev);
pm_runtime_idle(&client->dev);
+ ret = v4l2_async_register_subdev_sensor(&imx355->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);
+ pm_runtime_set_suspended(&client->dev);
media_entity_cleanup(&imx355->sd.entity);
error_handler_free:
Patches currently in stable-queue which might be from bingbu.cao@xxxxxxxxx are
queue-5.15/media-imx355-enable-runtime-pm-before-registering-async-sub-device.patch
queue-5.15/media-ov9734-enable-runtime-pm-before-registering-async-sub-device.patch
