From: Gary R Hook Subject: [PATCH 3/4] crypto: ccp - Update the command queue on errors Date: Mon, 30 Jan 2017 08:28:43 -0600 Message-ID: <20170130142843.8459.53690.stgit@taos> References: <20170130142414.8459.71539.stgit@taos> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Cc: , , To: Return-path: Received: from mail-sn1nam02on0081.outbound.protection.outlook.com ([104.47.36.81]:35664 "EHLO NAM02-SN1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752959AbdA3O3C (ORCPT ); Mon, 30 Jan 2017 09:29:02 -0500 In-Reply-To: <20170130142414.8459.71539.stgit@taos> Sender: linux-crypto-owner@vger.kernel.org List-ID: Move the command queue tail pointer when an error is detected. Always return the error. Signed-off-by: Gary R Hook --- drivers/crypto/ccp/ccp-dev-v5.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/crypto/ccp/ccp-dev-v5.c b/drivers/crypto/ccp/ccp-dev-v5.c index 5fb6c8c..d9e1876 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)