crypto: ccp - Update the command queue on errors

Move the command queue tail pointer when an error is
detected. Always return the error.

Signed-off-by: Gary R Hook <gary.hook@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/crypto/ccp/ccp-dev-v5.c b/drivers/crypto/ccp/ccp-dev-v5.c
index e0dfb6a05c48..41cc853f8569 100644
--- a/drivers/crypto/ccp/ccp-dev-v5.c
+++ b/drivers/crypto/ccp/ccp-dev-v5.c
@@ -250,17 +250,20 @@ static int ccp5_do_cmd(struct ccp5_desc *desc,
                 ret = wait_event_interruptible(cmd_q->int_queue,
                                                cmd_q->int_rcvd);
                 if (ret || cmd_q->cmd_error) {
+                        /* Log the error and flush the queue by
+                         * moving the head pointer
+                         */
                         if (cmd_q->cmd_error)
                                 ccp_log_error(cmd_q->ccp,
                                               cmd_q->cmd_error);
-                        /* A version 5 device doesn't use Job IDs... */
+                        iowrite32(tail, cmd_q->reg_head_lo);
                         if (!ret)
                                 ret = -EIO;
                 }
                 cmd_q->int_rcvd = 0;
         }
 
-        return 0;
+        return ret;
 }
 
 static int ccp5_perform_aes(struct ccp_op *op)