[Patch v4 1/7] crypto: qce: common: Add MAC failed error checking

[Thara Gopinath]

MAC_FAILED gets set in the status register if authenthication fails
for ccm algorithms(during decryption). Add support to catch and flag
this error.

Reviewed-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
Signed-off-by: Thara Gopinath <thara.gopinath@xxxxxxxxxx>
---

v1->v2:
	- Split the error checking for -ENXIO and -EBADMSG into if-else clause
	  so that the code is more readable as per Bjorn's review comment.

 drivers/crypto/qce/common.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/crypto/qce/common.c b/drivers/crypto/qce/common.c
index dceb9579d87a..dd76175d5c62 100644
--- a/drivers/crypto/qce/common.c
+++ b/drivers/crypto/qce/common.c
@@ -419,6 +419,8 @@ int qce_check_status(struct qce_device *qce, u32 *status)
 	 */
 	if (*status & STATUS_ERRORS || !(*status & BIT(OPERATION_DONE_SHIFT)))
 		ret = -ENXIO;
+	else if (*status & BIT(MAC_FAILED_SHIFT))
+		ret = -EBADMSG;
 
 	return ret;
 }
-- 
2.25.1