FAILED: patch "[PATCH] media: serial_ir: Fix race condition where timer can be re-armed" failed to apply to 5.15-stable tree

[Sasha Levin <sashal@kernel.org>]

The patch below does not apply to the 5.15-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y
git checkout FETCH_HEAD
git cherry-pick -x d74ac4016ba64cb3b20f395511d0b18025ca0ba9
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '20261107055939-failed-5.15-d74ac4016ba6@kernel.org' --subject-prefix 'PATCH 5.15.y' 'HEAD^..'

Thanks,
Sasha

------------------ original commit in Linus's tree ------------------

From d74ac4016ba64cb3b20f395511d0b18025ca0ba9 Mon Sep 17 00:00:00 2001
From: Sean Young <sean@mess.org>
Date: Tue, 1 Sep 2026 16:20:18 +0100
Subject: [PATCH] media: serial_ir: Fix race condition where timer can be
 re-armed

Ensure the timer cannot be re-armed.

Fixes: 2940c7e49775 ("[media] serial_ir: generate timeout")
Signed-off-by: Sean Young <sean@mess.org>
Cc: stable@vger.kernel.org
Acked-by: Hans Verkuil <hverkuil+cisco@kernel.org>
---
 drivers/media/rc/serial_ir.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/rc/serial_ir.c b/drivers/media/rc/serial_ir.c
index 992fff82b5245..f6702b3df9a03 100644
--- a/drivers/media/rc/serial_ir.c
+++ b/drivers/media/rc/serial_ir.c
@@ -798,7 +798,7 @@ static int __init serial_ir_init_module(void)
 
 static void __exit serial_ir_exit_module(void)
 {
-	timer_delete_sync(&serial_ir.timeout_timer);
+	timer_shutdown_sync(&serial_ir.timeout_timer);
 	serial_ir_exit();
 }
 
-- 
2.53.0