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>
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index e4e0e2e..e37258b 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -1920,20 +1920,31 @@
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;
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index 984ddcb..a8b610e 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -452,7 +452,7 @@
* 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 @@
return SUCCESS;
}
}
+EXPORT_SYMBOL_GPL(scsi_check_sense);
static void scsi_handle_queue_ramp_up(struct scsi_device *sdev)
{
diff --git a/include/scsi/scsi_eh.h b/include/scsi/scsi_eh.h
index dbb8c64..98d366b 100644
--- a/include/scsi/scsi_eh.h
+++ b/include/scsi/scsi_eh.h
@@ -16,6 +16,7 @@
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)
{
