crypto: qce - Add MAC failed error checking

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 <[email protected]> Signed-off-by: Thara Gopinath <[email protected]> Signed-off-by: Herbert Xu <[email protected]>
caleberi · May 14, 2021 · a9ca8ea · a9ca8ea
1 parent b7c3635
commit a9ca8ea
Showing 1 changed file with 2 additions and 0 deletions.
diff --git 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;
 }