From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 47D06C433B4 for ; Wed, 21 Apr 2021 17:49:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 12BCE61409 for ; Wed, 21 Apr 2021 17:49:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244975AbhDURtj (ORCPT ); Wed, 21 Apr 2021 13:49:39 -0400 Received: from mx2.suse.de ([195.135.220.15]:52410 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245099AbhDURtP (ORCPT ); Wed, 21 Apr 2021 13:49:15 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 4F59DB306; Wed, 21 Apr 2021 17:48:02 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: Christoph Hellwig , James Bottomley , Bart van Assche , linux-scsi@vger.kernel.org, Hannes Reinecke Subject: [PATCH 41/42] scsi: drop message byte helper Date: Wed, 21 Apr 2021 19:47:48 +0200 Message-Id: <20210421174749.11221-42-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210421174749.11221-1-hare@suse.de> References: <20210421174749.11221-1-hare@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org The message byte is not unused, so we can drop the helper to set the message byte and the check for message bytes during error recovery. Signed-off-by: Hannes Reinecke --- block/scsi_ioctl.c | 2 +- drivers/scsi/scsi_error.c | 18 ++---------------- drivers/scsi/sg.c | 2 +- drivers/xen/xen-scsiback.c | 2 +- include/scsi/scsi.h | 3 +-- include/scsi/scsi_cmnd.h | 5 ----- 6 files changed, 6 insertions(+), 26 deletions(-) diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c index ab2579467316..f2159f18626b 100644 --- a/block/scsi_ioctl.c +++ b/block/scsi_ioctl.c @@ -254,7 +254,7 @@ static int blk_complete_sghdr_rq(struct request *rq, struct sg_io_hdr *hdr, */ hdr->status = req->result & 0xff; hdr->masked_status = status_byte(req->result); - hdr->msg_status = msg_byte(req->result); + hdr->msg_status = COMMAND_COMPLETE; hdr->host_status = host_byte(req->result); hdr->driver_status = 0; hdr->info = 0; diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c index 4d0b3353da54..8eb7abcbf8d1 100644 --- a/drivers/scsi/scsi_error.c +++ b/drivers/scsi/scsi_error.c @@ -741,12 +741,6 @@ static enum scsi_disposition scsi_eh_completed_normally(struct scsi_cmnd *scmd) if (host_byte(scmd->result) != DID_OK) return FAILED; - /* - * next, check the message byte. - */ - if (msg_byte(scmd->result) != COMMAND_COMPLETE) - return FAILED; - /* * now, check the status byte to see if this indicates * anything special. @@ -1766,8 +1760,7 @@ int scsi_noretry_cmd(struct scsi_cmnd *scmd) case DID_PARITY: return (scmd->request->cmd_flags & REQ_FAILFAST_DEV); case DID_ERROR: - if (msg_byte(scmd->result) == COMMAND_COMPLETE && - status_byte(scmd->result) == RESERVATION_CONFLICT) + if (status_byte(scmd->result) == RESERVATION_CONFLICT) return 0; fallthrough; case DID_SOFT_ERROR: @@ -1883,8 +1876,7 @@ enum scsi_disposition scsi_decide_disposition(struct scsi_cmnd *scmd) */ return SUCCESS; case DID_ERROR: - if (msg_byte(scmd->result) == COMMAND_COMPLETE && - status_byte(scmd->result) == RESERVATION_CONFLICT) + if (status_byte(scmd->result) == RESERVATION_CONFLICT) /* * execute reservation conflict processing code * lower down @@ -1912,12 +1904,6 @@ enum scsi_disposition scsi_decide_disposition(struct scsi_cmnd *scmd) return FAILED; } - /* - * next, check the message byte. - */ - if (msg_byte(scmd->result) != COMMAND_COMPLETE) - return FAILED; - /* * check the status byte to see if this indicates anything special. */ diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c index 9122d05563d0..658a3538d69b 100644 --- a/drivers/scsi/sg.c +++ b/drivers/scsi/sg.c @@ -1376,7 +1376,7 @@ sg_rq_end_io(struct request *rq, blk_status_t status) srp->header.status = 0xff & result; srp->header.masked_status = status_byte(result); - srp->header.msg_status = msg_byte(result); + srp->header.msg_status = COMMAND_COMPLETE; srp->header.host_status = host_byte(result); srp->header.driver_status = driver_byte(result); if ((sdp->sgdebug > 0) && diff --git a/drivers/xen/xen-scsiback.c b/drivers/xen/xen-scsiback.c index 8efeddd96367..68d02f50bb2c 100644 --- a/drivers/xen/xen-scsiback.c +++ b/drivers/xen/xen-scsiback.c @@ -224,7 +224,7 @@ static void scsiback_print_status(char *sense_buffer, int errors, pr_err("[%s:%d] cmnd[0]=%02x -> st=%02x msg=%02x host=%02x\n", tpg->tport->tport_name, pending_req->v2p->lun, - pending_req->cmnd[0], status_byte(errors), msg_byte(errors), + pending_req->cmnd[0], status_byte(errors), COMMAND_COMPLETE, host_byte(errors)); } diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h index 5ed1c256ea94..253e0dcd9a17 100644 --- a/include/scsi/scsi.h +++ b/include/scsi/scsi.h @@ -195,11 +195,10 @@ enum scsi_disposition { * These are set by: * * status byte = set from target device - * msg_byte = return status from host adapter itself. + * msg_byte (unused) * host_byte = set by low-level driver to indicate status. */ #define status_byte(result) (((result) >> 1) & 0x7f) -#define msg_byte(result) (((result) >> 8) & 0xff) #define host_byte(result) (((result) >> 16) & 0xff) #define sense_class(sense) (((sense) >> 4) & 0x7) diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h index a0458f0dba14..2ac7f7fe4c50 100644 --- a/include/scsi/scsi_cmnd.h +++ b/include/scsi/scsi_cmnd.h @@ -321,11 +321,6 @@ static inline unsigned char get_status_byte(struct scsi_cmnd *cmd) return cmd->result & 0xff; } -static inline void set_msg_byte(struct scsi_cmnd *cmd, char status) -{ - cmd->result = (cmd->result & 0xffff00ff) | (status << 8); -} - static inline void set_host_byte(struct scsi_cmnd *cmd, char status) { cmd->result = (cmd->result & 0xff00ffff) | (status << 16); -- 2.29.2