FAILED: patch "[PATCH] crypto: omap-des - fix crypto engine cleanup" 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 5d69ed4cd4f9c68ff9a6ebb2e8a1079223a4ec6e
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '20261107055909-failed-5.15-5d69ed4cd4f9@kernel.org' --subject-prefix 'PATCH 5.15.y' 'HEAD^..'

Thanks,
Sasha

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

From 5d69ed4cd4f9c68ff9a6ebb2e8a1079223a4ec6e Mon Sep 17 00:00:00 2001
From: Guangshuo Li <lgs201920130244@gmail.com>
Date: Sat, 12 Sep 2026 22:41:16 +0800
Subject: [PATCH] crypto: omap-des - fix crypto engine cleanup

omap_des_probe() allocates and starts a crypto engine, but the remove
path does not call the matching crypto_engine_exit(). The probe failure
path already performs this cleanup.

crypto_engine_alloc_init() creates a kthread worker for processing
requests. Without crypto_engine_exit() during driver removal, the
worker is left running after the device is removed.

Call crypto_engine_exit() after unregistering the algorithms and before
tearing down the remaining request handling resources. This stops the
engine and destroys its worker.

This issue was found by manual code inspection.

Fixes: f1b77aaca85a ("crypto: omap-des - Integrate with the crypto engine framework")
Cc: stable@vger.kernel.org
Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
 drivers/crypto/omap-des.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/crypto/omap-des.c b/drivers/crypto/omap-des.c
index 3b7104cb4487b..4b5a8d13f505e 100644
--- a/drivers/crypto/omap-des.c
+++ b/drivers/crypto/omap-des.c
@@ -1082,6 +1082,8 @@ static void omap_des_remove(struct platform_device *pdev)
 
 	omap_des_unregister_algs(dd->pdata);
 
+	crypto_engine_exit(dd->engine);
+
 	cancel_work_sync(&dd->done_task);
 	omap_des_dma_cleanup(dd);
 	pm_runtime_disable(dd->dev);
-- 
2.53.0