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[SCSI] Set hostbyte status in scsi_check_sense()

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We should be modifying the host_byte status in scsi_check_sense()
directly; this saves us to introduce a special return code for
each and every condition.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Hannes Reinecke 2013-07-01 15:16:24 +02:00 committed by James Bottomley
parent 0f7f6234d3
commit 87f14e658f
2 changed files with 7 additions and 15 deletions
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21
drivers/scsi/scsi_error.c
View file

@ -228,7 +228,7 @@ static inline void scsi_eh_prt_fail_stats(struct Scsi_Host *shost,
* @scmd: Cmd to have sense checked.
*
* Return value:
* SUCCESS or FAILED or NEEDS_RETRY or TARGET_ERROR
* SUCCESS or FAILED or NEEDS_RETRY or ADD_TO_MLQUEUE
*
* Notes:
* When a deferred error is detected the current command has
@ -359,13 +359,15 @@ static int scsi_check_sense(struct scsi_cmnd *scmd)
case MISCOMPARE:
case BLANK_CHECK:
case DATA_PROTECT:
return TARGET_ERROR;
set_host_byte(scmd, DID_TARGET_FAILURE);
return SUCCESS;
case MEDIUM_ERROR:
if (sshdr.asc == 0x11 || /* UNRECOVERED READ ERR */
sshdr.asc == 0x13 || /* AMNF DATA FIELD */
sshdr.asc == 0x14) { /* RECORD NOT FOUND */
return TARGET_ERROR;
set_host_byte(scmd, DID_TARGET_FAILURE);
return SUCCESS;
}
return NEEDS_RETRY;
@ -373,14 +375,14 @@ static int scsi_check_sense(struct scsi_cmnd *scmd)
if (scmd->device->retry_hwerror)
return ADD_TO_MLQUEUE;
else
return TARGET_ERROR;
set_host_byte(scmd, DID_TARGET_FAILURE);
case ILLEGAL_REQUEST:
if (sshdr.asc == 0x20 || /* Invalid command operation code */
sshdr.asc == 0x21 || /* Logical block address out of range */
sshdr.asc == 0x24 || /* Invalid field in cdb */
sshdr.asc == 0x26) { /* Parameter value invalid */
return TARGET_ERROR;
set_host_byte(scmd, DID_TARGET_FAILURE);
}
return SUCCESS;
@ -843,7 +845,6 @@ static int scsi_send_eh_cmnd(struct scsi_cmnd *scmd, unsigned char *cmnd,
case SUCCESS:
case NEEDS_RETRY:
case FAILED:
case TARGET_ERROR:
break;
case ADD_TO_MLQUEUE:
rtn = NEEDS_RETRY;
@ -1577,14 +1578,6 @@ int scsi_decide_disposition(struct scsi_cmnd *scmd)
rtn = scsi_check_sense(scmd);
if (rtn == NEEDS_RETRY)
goto maybe_retry;
else if (rtn == TARGET_ERROR) {
/*
* Need to modify host byte to signal a
* permanent target failure
*/
set_host_byte(scmd, DID_TARGET_FAILURE);
rtn = SUCCESS;
}
/* if rtn == FAILED, we have no sense information;
* returning FAILED will wake the error handler thread
* to collect the sense and redo the decide

1
include/scsi/scsi.h
View file

@ -486,7 +486,6 @@ static inline int scsi_is_wlun(unsigned int lun)
#define TIMEOUT_ERROR 0x2007
#define SCSI_RETURN_NOT_HANDLED 0x2008
#define FAST_IO_FAIL 0x2009
#define TARGET_ERROR 0x200A
/*
* Midlevel queue return values.