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

crypto: s5p-sss - Fix completing crypto request in IRQ handler

to the 4.9-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: crypto-s5p-sss-fix-completing-crypto-request-in-irq-handler.patch and it can be found in the queue-4.9 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 foo@baz Tue Dec 12 13:26:17 CET 2017

From: Krzysztof Kozlowski krzk@kernel.org Date: Sun, 5 Mar 2017 19:14:07 +0200 Subject: crypto: s5p-sss - Fix completing crypto request in IRQ handler

From: Krzysztof Kozlowski krzk@kernel.org

[ Upstream commit 07de4bc88ce6a4d898cad9aa4c99c1df7e87702d ]

In a regular interrupt handler driver was finishing the crypt/decrypt request by calling complete on crypto request. This is disallowed since converting to skcipher in commit b286d8b1a690 ("crypto: skcipher - Add skcipher walk interface") and causes a warning: WARNING: CPU: 0 PID: 0 at crypto/skcipher.c:430 skcipher_walk_first+0x13c/0x14c

The interrupt is marked shared but in fact there are no other users sharing it. Thus the simplest solution seems to be to just use a threaded interrupt handler, after converting it to oneshot.

Signed-off-by: Krzysztof Kozlowski krzk@kernel.org Signed-off-by: Herbert Xu herbert@gondor.apana.org.au Signed-off-by: Sasha Levin alexander.levin@verizon.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/crypto/s5p-sss.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/drivers/crypto/s5p-sss.c +++ b/drivers/crypto/s5p-sss.c @@ -805,8 +805,9 @@ static int s5p_aes_probe(struct platform dev_warn(dev, "feed control interrupt is not available.\n"); goto err_irq; } - err = devm_request_irq(dev, pdata->irq_fc, s5p_aes_interrupt, - IRQF_SHARED, pdev->name, pdev); + err = devm_request_threaded_irq(dev, pdata->irq_fc, NULL, + s5p_aes_interrupt, IRQF_ONESHOT, + pdev->name, pdev); if (err < 0) { dev_warn(dev, "feed control interrupt is not available.\n"); goto err_irq;

Patches currently in stable-queue which might be from krzk@kernel.org are

queue-4.9/crypto-s5p-sss-fix-completing-crypto-request-in-irq-handler.patch