From: Hannes Reinecke <hare@suse.de>
To: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: Christoph Hellwig <hch@lst.de>,
James Bottomley <james.bottomley@hansenpartnership.com>,
Bart van Assche <bvanassche@acm.org>,
linux-scsi@vger.kernel.org, Hannes Reinecke <hare@suse.de>
Subject: [PATCH 37/40] scsi: drop message byte helper
Date: Tue, 27 Apr 2021 10:30:43 +0200 [thread overview]
Message-ID: <20210427083046.31620-38-hare@suse.de> (raw)
In-Reply-To: <20210427083046.31620-1-hare@suse.de>
The message byte is now 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 <hare@suse.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
---
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 4dd61e36ee29..d3089951afe6 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;
if (scsi_status_is_check_condition(hdr->status))
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index 689ee628eff9..3e6e456816fc 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 6b7d5f03fb2b..065d9e682f06 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 a6bb2600a2d7..bea22f71c782 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 59c5e729f40c..8fe0c628d20b 100644
--- a/include/scsi/scsi.h
+++ b/include/scsi/scsi.h
@@ -210,11 +210,10 @@ 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 69055c2044ff..598b98e4702d 100644
--- a/include/scsi/scsi_cmnd.h
+++ b/include/scsi/scsi_cmnd.h
@@ -321,11 +321,6 @@ static inline u8 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
next prev parent reply other threads:[~2021-04-27 8:31 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-27 8:30 [PATCHv3 00/40] SCSI result cleanup, part 2 Hannes Reinecke
2021-04-27 8:30 ` [PATCH 01/40] st: return error code in st_scsi_execute() Hannes Reinecke
2021-04-27 12:11 ` "Kai Mäkisara (Kolumbus)"
2021-04-27 8:30 ` [PATCH 02/40] scsi_ioctl: return error code when blk_rq_map_kern() fails Hannes Reinecke
2021-04-27 8:30 ` [PATCH 03/40] scsi: Fixup calling convention for scsi_mode_sense() Hannes Reinecke
2021-04-27 8:30 ` [PATCH 04/40] scsi: reshuffle response handling in scsi_mode_sense() Hannes Reinecke
2021-04-27 8:30 ` [PATCH 05/40] scsi_dh_alua: check for negative result value Hannes Reinecke
2021-04-27 8:30 ` [PATCH 06/40] scsi: stop using DRIVER_ERROR Hannes Reinecke
2021-04-27 8:30 ` [PATCH 07/40] scsi: introduce scsi_build_sense() Hannes Reinecke
2021-04-27 8:30 ` [PATCH 08/40] scsi: introduce scsi_status_is_check_condition() Hannes Reinecke
2021-04-27 8:30 ` [PATCH 09/40] scsi: Kill DRIVER_SENSE Hannes Reinecke
2021-04-27 8:30 ` [PATCH 10/40] scsi: do not use DRIVER_INVALID Hannes Reinecke
2021-04-27 8:30 ` [PATCH 11/40] scsi_error: use DID_TIME_OUT instead of DRIVER_TIMEOUT Hannes Reinecke
2021-04-27 8:30 ` [PATCH 12/40] xen-scsiback: use DID_ERROR instead of DRIVER_ERROR Hannes Reinecke
2021-04-27 8:30 ` [PATCH 13/40] xen-scsifront: compability status handling Hannes Reinecke
2021-04-27 8:30 ` [PATCH 14/40] scsi: Drop the now obsolete driver_byte definitions Hannes Reinecke
2021-04-27 8:30 ` [PATCH 15/40] NCR5380: Fold SCSI message ABORT onto DID_ABORT Hannes Reinecke
2021-04-27 8:30 ` [PATCH 16/40] scsi: add get_{status,host}_byte() accessor function Hannes Reinecke
2021-04-27 8:30 ` [PATCH 17/40] scsi: add scsi_msg_to_host_byte() Hannes Reinecke
2021-04-27 8:30 ` [PATCH 18/40] dc395: use standard macros to set SCSI result Hannes Reinecke
2021-04-27 8:30 ` [PATCH 19/40] dc395: translate message bytes Hannes Reinecke
2021-04-27 8:30 ` [PATCH 20/40] qlogicfas408: make ql_pcmd() a void function Hannes Reinecke
2021-04-27 8:30 ` [PATCH 21/40] qlogicfas408: whitespace cleanup Hannes Reinecke
2021-04-27 8:30 ` [PATCH 22/40] qlogicfas408: translate message to host byte status Hannes Reinecke
2021-04-27 8:30 ` [PATCH 23/40] nsp32: whitespace cleanup Hannes Reinecke
2021-04-27 8:30 ` [PATCH 24/40] nsp32: do not set message byte Hannes Reinecke
2021-04-27 8:30 ` [PATCH 25/40] wd33c93: translate message byte to host byte Hannes Reinecke
2021-04-27 8:30 ` [PATCH 26/40] mesh: translate message to host byte status Hannes Reinecke
2021-04-27 8:30 ` [PATCH 27/40] acornscsi: remove acornscsi_reportstatus() Hannes Reinecke
2021-04-27 8:30 ` [PATCH 28/40] acornscsi: translate message byte to host byte Hannes Reinecke
2021-04-27 8:30 ` [PATCH 29/40] aha152x: modify done() to use separate status bytes Hannes Reinecke
2021-04-27 8:30 ` [PATCH 30/40] aha152x: do not set message byte when calling scsi_done() Hannes Reinecke
2021-04-27 8:30 ` [PATCH 31/40] advansys: do not set message byte in SCSI status Hannes Reinecke
2021-04-27 8:30 ` [PATCH 32/40] fas216: translate message to host byte status Hannes Reinecke
2021-04-27 8:30 ` [PATCH 33/40] fas216: Use get_status_byte() to avoid using linux-specific status codes Hannes Reinecke
2021-04-27 8:30 ` [PATCH 34/40] FlashPoint: Use standard SCSI definitions Hannes Reinecke
2021-04-27 8:30 ` [PATCH 35/40] fdomain: drop last argument to fdomain_finish_cmd() Hannes Reinecke
2021-04-27 8:30 ` [PATCH 36/40] fdomain: translate message to host byte status Hannes Reinecke
2021-04-27 8:30 ` Hannes Reinecke [this message]
2021-04-27 8:30 ` [PATCH 38/40] scsi: kill message byte Hannes Reinecke
2021-04-27 8:30 ` [PATCH 39/40] target: use standard SAM status types Hannes Reinecke
2021-04-27 8:30 ` [PATCH 40/40] scsi: drop obsolete linux-specific SCSI status codes Hannes Reinecke
2021-04-29 6:48 ` Christoph Hellwig
2021-04-29 7:29 ` Hannes Reinecke
2021-04-29 15:52 ` Douglas Gilbert
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