This is a note to let you know that I've just added the patch titled

PM / runtime: Update links_count also if !CONFIG_SRCU

to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: pm-runtime-update-links_count-also-if-config_srcu.patch and it can be found in the queue-4.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From 433986c2c265d106d6a8e88006e0131fefc92b7b Mon Sep 17 00:00:00 2001

From: Lukas Wunner lukas@wunner.de Date: Sat, 10 Feb 2018 19:13:58 +0100 Subject: PM / runtime: Update links_count also if !CONFIG_SRCU

From: Lukas Wunner lukas@wunner.de

commit 433986c2c265d106d6a8e88006e0131fefc92b7b upstream.

Commit baa8809f6097 (PM / runtime: Optimize the use of device links) added an invocation of pm_runtime_drop_link() to __device_link_del(). However there are two variants of that function, one for CONFIG_SRCU and another for !CONFIG_SRCU, and the commit only modified the former.

Fixes: baa8809f6097 (PM / runtime: Optimize the use of device links) Cc: v4.10+ stable@vger.kernel.org # v4.10+ Signed-off-by: Lukas Wunner lukas@wunner.de Signed-off-by: Rafael J. Wysocki rafael.j.wysocki@intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/base/core.c | 3 +++ 1 file changed, 3 insertions(+)

--- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -313,6 +313,9 @@ static void __device_link_del(struct dev dev_info(link->consumer, "Dropping the link to %s\n", dev_name(link->supplier));

+ if (link->flags & DL_FLAG_PM_RUNTIME) + pm_runtime_drop_link(link->consumer); + list_del(&link->s_node); list_del(&link->c_node); device_link_free(link);

Patches currently in stable-queue which might be from lukas@wunner.de are

queue-4.15/pm-runtime-update-links_count-also-if-config_srcu.patch