This is a note to let you know that I've just added the patch titled
media: ipu3-cio2: Fix PM runtime usage_count in driver unbind
to the 4.19-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-ipu3-cio2-fix-pm-runtime-usage_count-in-driver-unbind.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 909d3096ac99fa2289f9b8945a3eab2269947a0a Mon Sep 17 00:00:00 2001
From: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
Date: Wed, 21 Dec 2022 09:30:11 +0100
Subject: media: ipu3-cio2: Fix PM runtime usage_count in driver unbind
From: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
commit 909d3096ac99fa2289f9b8945a3eab2269947a0a upstream.
Get the PM runtime usage_count and forbid PM runtime at driver unbind. The
opposite is being done in probe() already.
Fixes: commit c2a6a07afe4a ("media: intel-ipu3: cio2: add new MIPI-CSI2 driver")
Cc: stable@xxxxxxxxxxxxxxx # for >= 4.16
Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
Reviewed-by: Bingbu Cao <bingbu.cao@xxxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/media/pci/intel/ipu3/ipu3-cio2.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/media/pci/intel/ipu3/ipu3-cio2.c
+++ b/drivers/media/pci/intel/ipu3/ipu3-cio2.c
@@ -1860,6 +1860,9 @@ static void cio2_pci_remove(struct pci_d
v4l2_device_unregister(&cio2->v4l2_dev);
media_device_cleanup(&cio2->media_dev);
mutex_destroy(&cio2->lock);
+
+ pm_runtime_forbid(&pci_dev->dev);
+ pm_runtime_get_noresume(&pci_dev->dev);
}
static int __maybe_unused cio2_runtime_suspend(struct device *dev)
Patches currently in stable-queue which might be from sakari.ailus@xxxxxxxxxxxxxxx are
queue-4.19/media-i2c-ov7670-0-instead-of-einval-was-returned.patch
queue-4.19/media-i2c-ov772x-fix-memleak-in-ov772x_probe.patch
queue-4.19/media-ipu3-cio2-fix-pm-runtime-usage_count-in-driver-unbind.patch
