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libata: evaluate SCSI sense code

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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
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@@ -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;