[PATCH 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.

Signed-off-by: Thara Gopinath <thara.gopin...@linaro.org>
---
 drivers/crypto/qce/common.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/crypto/qce/common.c b/drivers/crypto/qce/common.c
index dceb9579d87a..7c3cb483749e 100644
--- a/drivers/crypto/qce/common.c
+++ b/drivers/crypto/qce/common.c
@@ -403,7 +403,8 @@ int qce_start(struct crypto_async_request *async_req, u32 
type)
 }
 
 #define STATUS_ERRORS  \
-               (BIT(SW_ERR_SHIFT) | BIT(AXI_ERR_SHIFT) | BIT(HSD_ERR_SHIFT))
+               (BIT(SW_ERR_SHIFT) | BIT(AXI_ERR_SHIFT) |       \
+                BIT(HSD_ERR_SHIFT) | BIT(MAC_FAILED_SHIFT))
 
 int qce_check_status(struct qce_device *qce, u32 *status)
 {
@@ -417,8 +418,12 @@ int qce_check_status(struct qce_device *qce, u32 *status)
         * use result_status from result dump the result_status needs to be byte
         * swapped, since we set the device to little endian.
         */
-       if (*status & STATUS_ERRORS || !(*status & BIT(OPERATION_DONE_SHIFT)))
-               ret = -ENXIO;
+       if (*status & STATUS_ERRORS || !(*status & BIT(OPERATION_DONE_SHIFT))) {
+               if (*status & BIT(MAC_FAILED_SHIFT))
+                       ret = -EBADMSG;
+               else
+                       ret = -ENXIO;
+       }
 
        return ret;
 }
-- 
2.25.1