4.16-stable review patch. If anyone has any objections, please let me know.
------------------
From: Antoine Tenart antoine.tenart@bootlin.com
[ Upstream commit 4dc5475ae0375ea4f9283dfd9b2ddc91b20d4c4b ]
This patch updates the safexcel_hmac_init_pad() function to also wait for completion when the digest return code is -EBUSY, as it would mean the request is in the backlog to be processed later.
Fixes: 1b44c5a60c13 ("crypto: inside-secure - add SafeXcel EIP197 crypto engine driver") Suggested-by: Ofer Heifetz oferh@marvell.com Signed-off-by: Antoine Tenart antoine.tenart@bootlin.com Signed-off-by: Herbert Xu herbert@gondor.apana.org.au Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/crypto/inside-secure/safexcel_hash.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/crypto/inside-secure/safexcel_hash.c +++ b/drivers/crypto/inside-secure/safexcel_hash.c @@ -845,7 +845,7 @@ static int safexcel_hmac_init_pad(struct init_completion(&result.completion);
ret = crypto_ahash_digest(areq); - if (ret == -EINPROGRESS) { + if (ret == -EINPROGRESS || ret == -EBUSY) { wait_for_completion_interruptible(&result.completion); ret = result.error; }