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libata: evaluate SCSI sense code 

Whenever a sense code is set it would need to be evaluated to
update the error mask.

tj: Cosmetic formatting updates.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Hannes Reinecke 2016-04-04 11:44:01 +02:00 committed by Tejun Heo
parent b525e7731b
commit 3852e37382
3 changed files with 23 additions and 10 deletions
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29
drivers/ata/libata-eh.c
View File

@ -1920,20 +1920,31 @@ static unsigned int ata_eh_analyze_tf(struct ata_queued_cmd *qc,
tmp = atapi_eh_request_sense(qc->dev,
qc->scsicmd->sense_buffer,
qc->result_tf.feature >> 4);
if (!tmp) {
/* ATA_QCFLAG_SENSE_VALID is used to
* tell atapi_qc_complete() that sense
* data is already valid.
*
* TODO: interpret sense data and set
* appropriate err_mask.
*/
if (!tmp)
qc->flags |= ATA_QCFLAG_SENSE_VALID;
} else
else
qc->err_mask |= tmp;
}
}
if (qc->flags & ATA_QCFLAG_SENSE_VALID) {
int ret = scsi_check_sense(qc->scsicmd);
/*
* SUCCESS here means that the sense code could
* evaluated and should be passed to the upper layers
* for correct evaluation.
* FAILED means the sense code could not interpreted
* and the device would need to be reset.
* NEEDS_RETRY and ADD_TO_MLQUEUE means that the
* command would need to be retried.
*/
if (ret == NEEDS_RETRY || ret == ADD_TO_MLQUEUE) {
qc->flags |= ATA_QCFLAG_RETRY;
qc->err_mask |= AC_ERR_OTHER;
} else if (ret != SUCCESS) {
qc->err_mask |= AC_ERR_HSM;
}
}
if (qc->err_mask & (AC_ERR_HSM | AC_ERR_TIMEOUT | AC_ERR_ATA_BUS))
action |= ATA_EH_RESET;

3
drivers/scsi/scsi_error.c
View File

@ -452,7 +452,7 @@ static void scsi_report_sense(struct scsi_device *sdev,
* When a deferred error is detected the current command has
* not been executed and needs retrying.
*/
static int scsi_check_sense(struct scsi_cmnd *scmd)
int scsi_check_sense(struct scsi_cmnd *scmd)
{
struct scsi_device *sdev = scmd->device;
struct scsi_sense_hdr sshdr;
@ -602,6 +602,7 @@ static int scsi_check_sense(struct scsi_cmnd *scmd)
return SUCCESS;
}
}
EXPORT_SYMBOL_GPL(scsi_check_sense);
static void scsi_handle_queue_ramp_up(struct scsi_device *sdev)
{

1
include/scsi/scsi_eh.h
View File

@ -16,6 +16,7 @@ extern void scsi_report_device_reset(struct Scsi_Host *, int, int);
extern int scsi_block_when_processing_errors(struct scsi_device *);
extern bool scsi_command_normalize_sense(const struct scsi_cmnd *cmd,
struct scsi_sense_hdr *sshdr);
extern int scsi_check_sense(struct scsi_cmnd *);
static inline bool scsi_sense_is_deferred(const struct scsi_sense_hdr *sshdr)
{