This is a note to let you know that I've just added the patch titled
driver core: Release all resources during unbind before updating device links
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:
driver-core-release-all-resources-during-unbind-before-updating-device-links.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 947c9e12ddd6866603fd60000c0cca8981687dd3 Mon Sep 17 00:00:00 2001
From: Saravana Kannan <saravanak@xxxxxxxxxx>
Date: Tue, 17 Oct 2023 18:38:50 -0700
Subject: driver core: Release all resources during unbind before updating device links
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From: Saravana Kannan <saravanak@xxxxxxxxxx>
commit 2e84dc37920012b458e9458b19fc4ed33f81bc74 upstream.
This commit fixes a bug in commit 9ed9895370ae ("driver core: Functional
dependencies tracking support") where the device link status was
incorrectly updated in the driver unbind path before all the device's
resources were released.
Fixes: 9ed9895370ae ("driver core: Functional dependencies tracking support")
Cc: stable <stable@xxxxxxxxxx>
Reported-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
Closes: https://lore.kernel.org/all/20231014161721.f4iqyroddkcyoefo@xxxxxxxxxxxxxx/
Signed-off-by: Saravana Kannan <saravanak@xxxxxxxxxx>
Cc: Thierry Reding <thierry.reding@xxxxxxxxx>
Cc: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Cc: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Cc: Mark Brown <broonie@xxxxxxxxxx>
Cc: Matti Vaittinen <mazziesaccount@xxxxxxxxx>
Cc: James Clark <james.clark@xxxxxxx>
Acked-by: "Rafael J. Wysocki" <rafael@xxxxxxxxxx>
Tested-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
Acked-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20231018013851.3303928-1-saravanak@xxxxxxxxxx
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/base/dd.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -995,8 +995,6 @@ static void __device_release_driver(stru
else if (drv->remove)
drv->remove(dev);
- device_links_driver_cleanup(dev);
-
devres_release_all(dev);
dma_deconfigure(dev);
dev->driver = NULL;
@@ -1006,6 +1004,8 @@ static void __device_release_driver(stru
pm_runtime_reinit(dev);
dev_pm_set_driver_flags(dev, 0);
+ device_links_driver_cleanup(dev);
+
klist_remove(&dev->p->knode_driver);
device_pm_check_callbacks(dev);
if (dev->bus)
Patches currently in stable-queue which might be from saravanak@xxxxxxxxxx are
queue-4.19/driver-core-release-all-resources-during-unbind-before-updating-device-links.patch
