4.16-stable review patch. If anyone has any objections, please let me know.
------------------
From: Antoine Tenart <antoine.tenart@xxxxxxxxxxx>
[ 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@xxxxxxxxxxx>
Signed-off-by: Antoine Tenart <antoine.tenart@xxxxxxxxxxx>
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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;
}
