From: Hannes Reinecke <hare@xxxxxxx>
With commit 65a15d6560df ("scsi: ipr: Remove SATA support") all
libata drivers now have the error_handler() callback provided,
so we can stop checking for non-existing error_handler callback.
Signed-off-by: Hannes Reinecke <hare@xxxxxxx>
[niklas: fixed review comments, rebased, solved conflicts during rebase,
fixed bug that unconditionally dumped all QCs, removed the now unused
function ata_dump_status(), removed the now unreachable failure paths in
atapi_qc_complete(), removed the non-EH function to request ATAPI sense]
Signed-off-by: Niklas Cassel <niklas.cassel@xxxxxxx>
Reviewed-by: John Garry <john.g.garry@xxxxxxxxxx>
Reviewed-by: Jason Yan <yanaijie@xxxxxxxxxx>
---
drivers/ata/libata-core.c | 209 +++++++++++++++-----------------------
drivers/ata/libata-eh.c | 152 ++++++++++++---------------
drivers/ata/libata-sata.c | 7 +-
drivers/ata/libata-scsi.c | 161 ++---------------------------
drivers/ata/libata-sff.c | 30 ++----
include/linux/libata.h | 2 +-
6 files changed, 170 insertions(+), 391 deletions(-)
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 04db0f2c683a..c7a29c3ac670 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -1586,13 +1586,11 @@ static unsigned ata_exec_internal_sg(struct ata_device *dev,
}
}
- if (ap->ops->error_handler)
- ata_eh_release(ap);
+ ata_eh_release(ap);
rc = wait_for_completion_timeout(&wait, msecs_to_jiffies(timeout));
- if (ap->ops->error_handler)
- ata_eh_acquire(ap);
+ ata_eh_acquire(ap);
ata_sff_flush_pio_task(ap);
@@ -1607,10 +1605,7 @@ static unsigned ata_exec_internal_sg(struct ata_device *dev,
if (qc->flags & ATA_QCFLAG_ACTIVE) {
qc->err_mask |= AC_ERR_TIMEOUT;
- if (ap->ops->error_handler)
- ata_port_freeze(ap);
- else
- ata_qc_complete(qc);
+ ata_port_freeze(ap);
ata_dev_warn(dev, "qc timeout after %u msecs (cmd 0x%x)\n",
timeout, command);
@@ -4874,126 +4869,103 @@ static void ata_verify_xfer(struct ata_queued_cmd *qc)
void ata_qc_complete(struct ata_queued_cmd *qc)
{
struct ata_port *ap = qc->ap;
+ struct ata_device *dev = qc->dev;
+ struct ata_eh_info *ehi = &dev->link->eh_info;
/* Trigger the LED (if available) */
ledtrig_disk_activity(!!(qc->tf.flags & ATA_TFLAG_WRITE));
- /* XXX: New EH and old EH use different mechanisms to
- * synchronize EH with regular execution path.
- *
- * In new EH, a qc owned by EH is marked with ATA_QCFLAG_EH.
- * Normal execution path is responsible for not accessing a
- * qc owned by EH. libata core enforces the rule by returning NULL
- * from ata_qc_from_tag() for qcs owned by EH.
+ /*
+ * In order to synchronize EH with the regular execution path, a qc that
+ * is owned by EH is marked with ATA_QCFLAG_EH.
*
- * Old EH depends on ata_qc_complete() nullifying completion
- * requests if ATA_QCFLAG_EH_SCHEDULED is set. Old EH does
- * not synchronize with interrupt handler. Only PIO task is
- * taken care of.
+ * The normal execution path is responsible for not accessing a qc owned
+ * by EH. libata core enforces the rule by returning NULL from
+ * ata_qc_from_tag() for qcs owned by EH.
*/
- if (ap->ops->error_handler) {
- struct ata_device *dev = qc->dev;
- struct ata_eh_info *ehi = &dev->link->eh_info;
-
- if (unlikely(qc->err_mask))
- qc->flags |= ATA_QCFLAG_EH;
+ if (unlikely(qc->err_mask))
+ qc->flags |= ATA_QCFLAG_EH;
- /*
- * Finish internal commands without any further processing
- * and always with the result TF filled.
- */
- if (unlikely(ata_tag_internal(qc->tag))) {
- fill_result_tf(qc);
- trace_ata_qc_complete_internal(qc);
- __ata_qc_complete(qc);
- return;
- }
+ /*
+ * Finish internal commands without any further processing and always
+ * with the result TF filled.
+ */
+ if (unlikely(ata_tag_internal(qc->tag))) {
+ fill_result_tf(qc);
+ trace_ata_qc_complete_internal(qc);
+ __ata_qc_complete(qc);
+ return;
+ }
- /*
- * Non-internal qc has failed. Fill the result TF and
- * summon EH.
- */
- if (unlikely(qc->flags & ATA_QCFLAG_EH)) {
- fill_result_tf(qc);
- trace_ata_qc_complete_failed(qc);
- ata_qc_schedule_eh(qc);
- return;
- }
+ /* Non-internal qc has failed. Fill the result TF and summon EH. */
+ if (unlikely(qc->flags & ATA_QCFLAG_EH)) {
+ fill_result_tf(qc);
+ trace_ata_qc_complete_failed(qc);
+ ata_qc_schedule_eh(qc);
+ return;
+ }
- WARN_ON_ONCE(ata_port_is_frozen(ap));
+ WARN_ON_ONCE(ata_port_is_frozen(ap));
- /* read result TF if requested */
- if (qc->flags & ATA_QCFLAG_RESULT_TF)
- fill_result_tf(qc);
+ /* read result TF if requested */
+ if (qc->flags & ATA_QCFLAG_RESULT_TF)
+ fill_result_tf(qc);
- trace_ata_qc_complete_done(qc);
+ trace_ata_qc_complete_done(qc);
+ /*
+ * For CDL commands that completed without an error, check if we have
+ * sense data (ATA_SENSE is set). If we do, then the command may have
+ * been aborted by the device due to a limit timeout using the policy
+ * 0xD. For these commands, invoke EH to get the command sense data.
+ */
+ if (qc->result_tf.status & ATA_SENSE &&
+ ((ata_is_ncq(qc->tf.protocol) &&
+ dev->flags & ATA_DFLAG_CDL_ENABLED) ||
+ (!ata_is_ncq(qc->tf.protocol) &&
+ ata_id_sense_reporting_enabled(dev->id)))) {
/*
- * For CDL commands that completed without an error, check if
- * we have sense data (ATA_SENSE is set). If we do, then the
- * command may have been aborted by the device due to a limit
- * timeout using the policy 0xD. For these commands, invoke EH
- * to get the command sense data.
+ * Tell SCSI EH to not overwrite scmd->result even if this
+ * command is finished with result SAM_STAT_GOOD.
*/
- if (qc->result_tf.status & ATA_SENSE &&
- ((ata_is_ncq(qc->tf.protocol) &&
- dev->flags & ATA_DFLAG_CDL_ENABLED) ||
- (!ata_is_ncq(qc->tf.protocol) &&
- ata_id_sense_reporting_enabled(dev->id)))) {
- /*
- * Tell SCSI EH to not overwrite scmd->result even if
- * this command is finished with result SAM_STAT_GOOD.
- */
- qc->scsicmd->flags |= SCMD_FORCE_EH_SUCCESS;
- qc->flags |= ATA_QCFLAG_EH_SUCCESS_CMD;
- ehi->dev_action[dev->devno] |= ATA_EH_GET_SUCCESS_SENSE;
-
- /*
- * set pending so that ata_qc_schedule_eh() does not
- * trigger fast drain, and freeze the port.
- */
- ap->pflags |= ATA_PFLAG_EH_PENDING;
- ata_qc_schedule_eh(qc);
- return;
- }
+ qc->scsicmd->flags |= SCMD_FORCE_EH_SUCCESS;
+ qc->flags |= ATA_QCFLAG_EH_SUCCESS_CMD;
+ ehi->dev_action[dev->devno] |= ATA_EH_GET_SUCCESS_SENSE;
- /* Some commands need post-processing after successful
- * completion.
+ /*
+ * set pending so that ata_qc_schedule_eh() does not trigger
+ * fast drain, and freeze the port.
*/
- switch (qc->tf.command) {
- case ATA_CMD_SET_FEATURES:
- if (qc->tf.feature != SETFEATURES_WC_ON &&
- qc->tf.feature != SETFEATURES_WC_OFF &&
- qc->tf.feature != SETFEATURES_RA_ON &&
- qc->tf.feature != SETFEATURES_RA_OFF)
- break;
- fallthrough;
- case ATA_CMD_INIT_DEV_PARAMS: /* CHS translation changed */
- case ATA_CMD_SET_MULTI: /* multi_count changed */
- /* revalidate device */
- ehi->dev_action[dev->devno] |= ATA_EH_REVALIDATE;
- ata_port_schedule_eh(ap);
- break;
+ ap->pflags |= ATA_PFLAG_EH_PENDING;
+ ata_qc_schedule_eh(qc);
+ return;
+ }
- case ATA_CMD_SLEEP:
- dev->flags |= ATA_DFLAG_SLEEPING;
+ /* Some commands need post-processing after successful completion. */
+ switch (qc->tf.command) {
+ case ATA_CMD_SET_FEATURES:
+ if (qc->tf.feature != SETFEATURES_WC_ON &&
+ qc->tf.feature != SETFEATURES_WC_OFF &&
+ qc->tf.feature != SETFEATURES_RA_ON &&
+ qc->tf.feature != SETFEATURES_RA_OFF)
break;
- }
-
- if (unlikely(dev->flags & ATA_DFLAG_DUBIOUS_XFER))
- ata_verify_xfer(qc);
+ fallthrough;
+ case ATA_CMD_INIT_DEV_PARAMS: /* CHS translation changed */
+ case ATA_CMD_SET_MULTI: /* multi_count changed */
+ /* revalidate device */
+ ehi->dev_action[dev->devno] |= ATA_EH_REVALIDATE;
+ ata_port_schedule_eh(ap);
+ break;
- __ata_qc_complete(qc);
- } else {
- if (qc->flags & ATA_QCFLAG_EH_SCHEDULED)
- return;
+ case ATA_CMD_SLEEP:
+ dev->flags |= ATA_DFLAG_SLEEPING;
+ break;
+ }
- /* read result TF if failed or requested */
- if (qc->err_mask || qc->flags & ATA_QCFLAG_RESULT_TF)
- fill_result_tf(qc);
+ if (unlikely(dev->flags & ATA_DFLAG_DUBIOUS_XFER))
+ ata_verify_xfer(qc);
- __ata_qc_complete(qc);
- }
+ __ata_qc_complete(qc);
}
EXPORT_SYMBOL_GPL(ata_qc_complete);
@@ -5039,11 +5011,8 @@ void ata_qc_issue(struct ata_queued_cmd *qc)
struct ata_link *link = qc->dev->link;
u8 prot = qc->tf.protocol;
- /* Make sure only one non-NCQ command is outstanding. The
- * check is skipped for old EH because it reuses active qc to
- * request ATAPI sense.
- */
- WARN_ON_ONCE(ap->ops->error_handler && ata_tag_valid(link->active_tag));
+ /* Make sure only one non-NCQ command is outstanding. */
+ WARN_ON_ONCE(ata_tag_valid(link->active_tag));
if (ata_is_ncq(prot)) {
WARN_ON_ONCE(link->sactive & (1 << qc->hw_tag));
@@ -5917,15 +5886,9 @@ void __ata_port_probe(struct ata_port *ap)
int ata_port_probe(struct ata_port *ap)
{
- int rc = 0;
-
- if (ap->ops->error_handler) {
- __ata_port_probe(ap);
- ata_port_wait_eh(ap);
- } else {
- rc = ata_bus_probe(ap);
- }
- return rc;
+ __ata_port_probe(ap);
+ ata_port_wait_eh(ap);
+ return 0;
}
@@ -6130,9 +6093,6 @@ static void ata_port_detach(struct ata_port *ap)
struct ata_link *link;
struct ata_device *dev;
- if (!ap->ops->error_handler)
- goto skip_eh;
-
/* tell EH we're leaving & flush EH */
spin_lock_irqsave(ap->lock, flags);
ap->pflags |= ATA_PFLAG_UNLOADING;
@@ -6148,7 +6108,6 @@ static void ata_port_detach(struct ata_port *ap)
cancel_delayed_work_sync(&ap->hotplug_task);
cancel_delayed_work_sync(&ap->scsi_rescan_task);
- skip_eh:
/* clean up zpodd on port removal */
ata_for_each_link(link, ap, HOST_FIRST) {
ata_for_each_dev(dev, link, ALL) {
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index 35e03679b0bf..9d6affabf225 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -571,13 +571,10 @@ void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap,
/* make sure sff pio task is not running */
ata_sff_flush_pio_task(ap);
- if (!ap->ops->error_handler)
- return;
-
/* synchronize with host lock and sort out timeouts */
/*
- * For new EH, all qcs are finished in one of three ways -
+ * For EH, all qcs are finished in one of three ways -
* normal completion, error completion, and SCSI timeout.
* Both completions can race against SCSI timeout. When normal
* completion wins, the qc never reaches EH. When error
@@ -659,94 +656,87 @@ EXPORT_SYMBOL(ata_scsi_cmd_error_handler);
void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap)
{
unsigned long flags;
+ struct ata_link *link;
- /* invoke error handler */
- if (ap->ops->error_handler) {
- struct ata_link *link;
-
- /* acquire EH ownership */
- ata_eh_acquire(ap);
+ /* acquire EH ownership */
+ ata_eh_acquire(ap);
repeat:
- /* kill fast drain timer */
- del_timer_sync(&ap->fastdrain_timer);
+ /* kill fast drain timer */
+ del_timer_sync(&ap->fastdrain_timer);
- /* process port resume request */
- ata_eh_handle_port_resume(ap);
+ /* process port resume request */
+ ata_eh_handle_port_resume(ap);
- /* fetch & clear EH info */
- spin_lock_irqsave(ap->lock, flags);
+ /* fetch & clear EH info */
+ spin_lock_irqsave(ap->lock, flags);
- ata_for_each_link(link, ap, HOST_FIRST) {
- struct ata_eh_context *ehc = &link->eh_context;
- struct ata_device *dev;
+ ata_for_each_link(link, ap, HOST_FIRST) {
+ struct ata_eh_context *ehc = &link->eh_context;
+ struct ata_device *dev;
- memset(&link->eh_context, 0, sizeof(link->eh_context));
- link->eh_context.i = link->eh_info;
- memset(&link->eh_info, 0, sizeof(link->eh_info));
+ memset(&link->eh_context, 0, sizeof(link->eh_context));
+ link->eh_context.i = link->eh_info;
+ memset(&link->eh_info, 0, sizeof(link->eh_info));
- ata_for_each_dev(dev, link, ENABLED) {
- int devno = dev->devno;
+ ata_for_each_dev(dev, link, ENABLED) {
+ int devno = dev->devno;
- ehc->saved_xfer_mode[devno] = dev->xfer_mode;
- if (ata_ncq_enabled(dev))
- ehc->saved_ncq_enabled |= 1 << devno;
- }
+ ehc->saved_xfer_mode[devno] = dev->xfer_mode;
+ if (ata_ncq_enabled(dev))
+ ehc->saved_ncq_enabled |= 1 << devno;
}
+ }
- ap->pflags |= ATA_PFLAG_EH_IN_PROGRESS;
- ap->pflags &= ~ATA_PFLAG_EH_PENDING;
- ap->excl_link = NULL; /* don't maintain exclusion over EH */
+ ap->pflags |= ATA_PFLAG_EH_IN_PROGRESS;
+ ap->pflags &= ~ATA_PFLAG_EH_PENDING;
+ ap->excl_link = NULL; /* don't maintain exclusion over EH */
- spin_unlock_irqrestore(ap->lock, flags);
+ spin_unlock_irqrestore(ap->lock, flags);
- /* invoke EH, skip if unloading or suspended */
- if (!(ap->pflags & (ATA_PFLAG_UNLOADING | ATA_PFLAG_SUSPENDED)))
- ap->ops->error_handler(ap);
- else {
- /* if unloading, commence suicide */
- if ((ap->pflags & ATA_PFLAG_UNLOADING) &&
- !(ap->pflags & ATA_PFLAG_UNLOADED))
- ata_eh_unload(ap);
- ata_eh_finish(ap);
- }
+ /* invoke EH, skip if unloading or suspended */
+ if (!(ap->pflags & (ATA_PFLAG_UNLOADING | ATA_PFLAG_SUSPENDED)))
+ ap->ops->error_handler(ap);
+ else {
+ /* if unloading, commence suicide */
+ if ((ap->pflags & ATA_PFLAG_UNLOADING) &&
+ !(ap->pflags & ATA_PFLAG_UNLOADED))
+ ata_eh_unload(ap);
+ ata_eh_finish(ap);
+ }
- /* process port suspend request */
- ata_eh_handle_port_suspend(ap);
+ /* process port suspend request */
+ ata_eh_handle_port_suspend(ap);
- /* Exception might have happened after ->error_handler
- * recovered the port but before this point. Repeat
- * EH in such case.
- */
- spin_lock_irqsave(ap->lock, flags);
+ /*
+ * Exception might have happened after ->error_handler recovered the
+ * port but before this point. Repeat EH in such case.
+ */
+ spin_lock_irqsave(ap->lock, flags);
- if (ap->pflags & ATA_PFLAG_EH_PENDING) {
- if (--ap->eh_tries) {
- spin_unlock_irqrestore(ap->lock, flags);
- goto repeat;
- }
- ata_port_err(ap,
- "EH pending after %d tries, giving up\n",
- ATA_EH_MAX_TRIES);
- ap->pflags &= ~ATA_PFLAG_EH_PENDING;
+ if (ap->pflags & ATA_PFLAG_EH_PENDING) {
+ if (--ap->eh_tries) {
+ spin_unlock_irqrestore(ap->lock, flags);
+ goto repeat;
}
+ ata_port_err(ap,
+ "EH pending after %d tries, giving up\n",
+ ATA_EH_MAX_TRIES);
+ ap->pflags &= ~ATA_PFLAG_EH_PENDING;
+ }
- /* this run is complete, make sure EH info is clear */
- ata_for_each_link(link, ap, HOST_FIRST)
- memset(&link->eh_info, 0, sizeof(link->eh_info));
+ /* this run is complete, make sure EH info is clear */
+ ata_for_each_link(link, ap, HOST_FIRST)
+ memset(&link->eh_info, 0, sizeof(link->eh_info));
- /* end eh (clear host_eh_scheduled) while holding
- * ap->lock such that if exception occurs after this
- * point but before EH completion, SCSI midlayer will
- * re-initiate EH.
- */
- ap->ops->end_eh(ap);
+ /*
+ * end eh (clear host_eh_scheduled) while holding ap->lock such that if
+ * exception occurs after this point but before EH completion, SCSI
+ * midlayer will re-initiate EH.
+ */
+ ap->ops->end_eh(ap);
- spin_unlock_irqrestore(ap->lock, flags);
- ata_eh_release(ap);
- } else {
- WARN_ON(ata_qc_from_tag(ap, ap->link.active_tag) == NULL);
- ap->ops->eng_timeout(ap);
- }
+ spin_unlock_irqrestore(ap->lock, flags);
+ ata_eh_release(ap);
scsi_eh_flush_done_q(&ap->eh_done_q);
@@ -912,8 +902,6 @@ void ata_qc_schedule_eh(struct ata_queued_cmd *qc)
{
struct ata_port *ap = qc->ap;
- WARN_ON(!ap->ops->error_handler);
-
qc->flags |= ATA_QCFLAG_EH;
ata_eh_set_pending(ap, 1);
@@ -934,8 +922,6 @@ void ata_qc_schedule_eh(struct ata_queued_cmd *qc)
*/
void ata_std_sched_eh(struct ata_port *ap)
{
- WARN_ON(!ap->ops->error_handler);
-
if (ap->pflags & ATA_PFLAG_INITIALIZING)
return;
@@ -989,8 +975,6 @@ static int ata_do_link_abort(struct ata_port *ap, struct ata_link *link)
struct ata_queued_cmd *qc;
int tag, nr_aborted = 0;
- WARN_ON(!ap->ops->error_handler);
-
/* we're gonna abort all commands, no need for fast drain */
ata_eh_set_pending(ap, 0);
@@ -1065,8 +1049,6 @@ EXPORT_SYMBOL_GPL(ata_port_abort);
*/
static void __ata_port_freeze(struct ata_port *ap)
{
- WARN_ON(!ap->ops->error_handler);
-
if (ap->ops->freeze)
ap->ops->freeze(ap);
@@ -1091,8 +1073,6 @@ static void __ata_port_freeze(struct ata_port *ap)
*/
int ata_port_freeze(struct ata_port *ap)
{
- WARN_ON(!ap->ops->error_handler);
-
__ata_port_freeze(ap);
return ata_port_abort(ap);
@@ -1112,9 +1092,6 @@ void ata_eh_freeze_port(struct ata_port *ap)
{
unsigned long flags;
- if (!ap->ops->error_handler)
- return;
-
spin_lock_irqsave(ap->lock, flags);
__ata_port_freeze(ap);
spin_unlock_irqrestore(ap->lock, flags);
@@ -1134,9 +1111,6 @@ void ata_eh_thaw_port(struct ata_port *ap)
{
unsigned long flags;
- if (!ap->ops->error_handler)
- return;
-
spin_lock_irqsave(ap->lock, flags);
ap->pflags &= ~ATA_PFLAG_FROZEN;
diff --git a/drivers/ata/libata-sata.c b/drivers/ata/libata-sata.c
index 85e279a12f62..99d4ab04bcce 100644
--- a/drivers/ata/libata-sata.c
+++ b/drivers/ata/libata-sata.c
@@ -1158,12 +1158,7 @@ EXPORT_SYMBOL_GPL(ata_sas_port_alloc);
*/
int ata_sas_port_start(struct ata_port *ap)
{
- /*
- * the port is marked as frozen at allocation time, but if we don't
- * have new eh, we won't thaw it
- */
- if (!ap->ops->error_handler)
- ap->pflags &= ~ATA_PFLAG_FROZEN;
+ /* the port is marked as frozen at allocation time */
return 0;
}
EXPORT_SYMBOL_GPL(ata_sas_port_start);
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 370d18aca71e..9111d1b3c586 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -709,47 +709,6 @@ static void ata_qc_set_pc_nbytes(struct ata_queued_cmd *qc)
qc->nbytes = scsi_bufflen(scmd) + qc->extrabytes;
}
-/**
- * ata_dump_status - user friendly display of error info
- * @ap: the port in question
- * @tf: ptr to filled out taskfile
- *
- * Decode and dump the ATA error/status registers for the user so
- * that they have some idea what really happened at the non
- * make-believe layer.
- *
- * LOCKING:
- * inherited from caller
- */
-static void ata_dump_status(struct ata_port *ap, struct ata_taskfile *tf)
-{
- u8 stat = tf->status, err = tf->error;
-
- if (stat & ATA_BUSY) {
- ata_port_warn(ap, "status=0x%02x {Busy} ", stat);
- } else {
- ata_port_warn(ap, "status=0x%02x { %s%s%s%s%s%s%s} ", stat,
- stat & ATA_DRDY ? "DriveReady " : "",
- stat & ATA_DF ? "DeviceFault " : "",
- stat & ATA_DSC ? "SeekComplete " : "",
- stat & ATA_DRQ ? "DataRequest " : "",
- stat & ATA_CORR ? "CorrectedError " : "",
- stat & ATA_SENSE ? "Sense " : "",
- stat & ATA_ERR ? "Error " : "");
- if (err)
- ata_port_warn(ap, "error=0x%02x {%s%s%s%s%s%s", err,
- err & ATA_ABORTED ?
- "DriveStatusError " : "",
- err & ATA_ICRC ?
- (err & ATA_ABORTED ?
- "BadCRC " : "Sector ") : "",
- err & ATA_UNC ? "UncorrectableError " : "",
- err & ATA_IDNF ? "SectorIdNotFound " : "",
- err & ATA_TRK0NF ? "TrackZeroNotFound " : "",
- err & ATA_AMNF ? "AddrMarkNotFound " : "");
- }
-}
-
/**
* ata_to_sense_error - convert ATA error to SCSI error
* @id: ATA device number
@@ -758,7 +717,6 @@ static void ata_dump_status(struct ata_port *ap, struct ata_taskfile *tf)
* @sk: the sense key we'll fill out
* @asc: the additional sense code we'll fill out
* @ascq: the additional sense code qualifier we'll fill out
- * @verbose: be verbose
*
* Converts an ATA error into a SCSI error. Fill out pointers to
* SK, ASC, and ASCQ bytes for later use in fixed or descriptor
@@ -768,7 +726,7 @@ static void ata_dump_status(struct ata_port *ap, struct ata_taskfile *tf)
* spin_lock_irqsave(host lock)
*/
static void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk,
- u8 *asc, u8 *ascq, int verbose)
+ u8 *asc, u8 *ascq)
{
int i;
@@ -847,7 +805,7 @@ static void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk,
*sk = sense_table[i][1];
*asc = sense_table[i][2];
*ascq = sense_table[i][3];
- goto translate_done;
+ return;
}
}
}
@@ -862,7 +820,7 @@ static void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk,
*sk = stat_table[i][1];
*asc = stat_table[i][2];
*ascq = stat_table[i][3];
- goto translate_done;
+ return;
}
}
@@ -873,12 +831,6 @@ static void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk,
*sk = ABORTED_COMMAND;
*asc = 0x00;
*ascq = 0x00;
-
- translate_done:
- if (verbose)
- pr_err("ata%u: translated ATA stat/err 0x%02x/%02x to SCSI SK/ASC/ASCQ 0x%x/%02x/%02x\n",
- id, drv_stat, drv_err, *sk, *asc, *ascq);
- return;
}
/*
@@ -904,7 +856,6 @@ static void ata_gen_passthru_sense(struct ata_queued_cmd *qc)
struct ata_taskfile *tf = &qc->result_tf;
unsigned char *sb = cmd->sense_buffer;
unsigned char *desc = sb + 8;
- int verbose = qc->ap->ops->error_handler == NULL;
u8 sense_key, asc, ascq;
memset(sb, 0, SCSI_SENSE_BUFFERSIZE);
@@ -916,7 +867,7 @@ static void ata_gen_passthru_sense(struct ata_queued_cmd *qc)
if (qc->err_mask ||
tf->status & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) {
ata_to_sense_error(qc->ap->print_id, tf->status, tf->error,
- &sense_key, &asc, &ascq, verbose);
+ &sense_key, &asc, &ascq);
ata_scsi_set_sense(qc->dev, cmd, sense_key, asc, ascq);
} else {
/*
@@ -999,7 +950,6 @@ static void ata_gen_ata_sense(struct ata_queued_cmd *qc)
struct scsi_cmnd *cmd = qc->scsicmd;
struct ata_taskfile *tf = &qc->result_tf;
unsigned char *sb = cmd->sense_buffer;
- int verbose = qc->ap->ops->error_handler == NULL;
u64 block;
u8 sense_key, asc, ascq;
@@ -1017,7 +967,7 @@ static void ata_gen_ata_sense(struct ata_queued_cmd *qc)
if (qc->err_mask ||
tf->status & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) {
ata_to_sense_error(qc->ap->print_id, tf->status, tf->error,
- &sense_key, &asc, &ascq, verbose);
+ &sense_key, &asc, &ascq);
ata_scsi_set_sense(dev, cmd, sense_key, asc, ascq);
} else {
/* Could not decode error */
@@ -1179,9 +1129,6 @@ void ata_scsi_slave_destroy(struct scsi_device *sdev)
unsigned long flags;
struct ata_device *dev;
- if (!ap->ops->error_handler)
- return;
-
spin_lock_irqsave(ap->lock, flags);
dev = __ata_scsi_find_dev(ap, sdev);
if (dev && dev->sdev) {
@@ -1668,7 +1615,6 @@ static void ata_qc_done(struct ata_queued_cmd *qc)
static void ata_scsi_qc_complete(struct ata_queued_cmd *qc)
{
- struct ata_port *ap = qc->ap;
struct scsi_cmnd *cmd = qc->scsicmd;
u8 *cdb = cmd->cmnd;
int need_sense = (qc->err_mask != 0) &&
@@ -1692,9 +1638,6 @@ static void ata_scsi_qc_complete(struct ata_queued_cmd *qc)
/* Keep the SCSI ML and status byte, clear host byte. */
cmd->result &= 0x0000ffff;
- if (need_sense && !ap->ops->error_handler)
- ata_dump_status(ap, &qc->result_tf);
-
ata_qc_done(qc);
}
@@ -2601,71 +2544,6 @@ static unsigned int ata_scsiop_report_luns(struct ata_scsi_args *args, u8 *rbuf)
return 0;
}
-static void atapi_sense_complete(struct ata_queued_cmd *qc)
-{
- if (qc->err_mask && ((qc->err_mask & AC_ERR_DEV) == 0)) {
- /* FIXME: not quite right; we don't want the
- * translation of taskfile registers into
- * a sense descriptors, since that's only
- * correct for ATA, not ATAPI
- */
- ata_gen_passthru_sense(qc);
- }
-
- ata_qc_done(qc);
-}
-
-/* is it pointless to prefer PIO for "safety reasons"? */
-static inline int ata_pio_use_silly(struct ata_port *ap)
-{
- return (ap->flags & ATA_FLAG_PIO_DMA);
-}
-
-static void atapi_request_sense(struct ata_queued_cmd *qc)
-{
- struct ata_port *ap = qc->ap;
- struct scsi_cmnd *cmd = qc->scsicmd;
-
- memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
-
-#ifdef CONFIG_ATA_SFF
- if (ap->ops->sff_tf_read)
- ap->ops->sff_tf_read(ap, &qc->tf);
-#endif
-
- /* fill these in, for the case where they are -not- overwritten */
- cmd->sense_buffer[0] = 0x70;
- cmd->sense_buffer[2] = qc->tf.error >> 4;
-
- ata_qc_reinit(qc);
-
- /* setup sg table and init transfer direction */
- sg_init_one(&qc->sgent, cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE);
- ata_sg_init(qc, &qc->sgent, 1);
- qc->dma_dir = DMA_FROM_DEVICE;
-
- memset(&qc->cdb, 0, qc->dev->cdb_len);
- qc->cdb[0] = REQUEST_SENSE;
- qc->cdb[4] = SCSI_SENSE_BUFFERSIZE;
-
- qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
- qc->tf.command = ATA_CMD_PACKET;
-
- if (ata_pio_use_silly(ap)) {
- qc->tf.protocol = ATAPI_PROT_DMA;
- qc->tf.feature |= ATAPI_PKT_DMA;
- } else {
- qc->tf.protocol = ATAPI_PROT_PIO;
- qc->tf.lbam = SCSI_SENSE_BUFFERSIZE;
- qc->tf.lbah = 0;
- }
- qc->nbytes = SCSI_SENSE_BUFFERSIZE;
-
- qc->complete_fn = atapi_sense_complete;
-
- ata_qc_issue(qc);
-}
-
/*
* ATAPI devices typically report zero for their SCSI version, and sometimes
* deviate from the spec WRT response data format. If SCSI version is
@@ -2691,9 +2569,8 @@ static void atapi_qc_complete(struct ata_queued_cmd *qc)
struct scsi_cmnd *cmd = qc->scsicmd;
unsigned int err_mask = qc->err_mask;
- /* handle completion from new EH */
- if (unlikely(qc->ap->ops->error_handler &&
- (err_mask || qc->flags & ATA_QCFLAG_SENSE_VALID))) {
+ /* handle completion from EH */
+ if (unlikely(err_mask || qc->flags & ATA_QCFLAG_SENSE_VALID)) {
if (!(qc->flags & ATA_QCFLAG_SENSE_VALID)) {
/* FIXME: not quite right; we don't want the
@@ -2725,23 +2602,10 @@ static void atapi_qc_complete(struct ata_queued_cmd *qc)
return;
}
- /* successful completion or old EH failure path */
- if (unlikely(err_mask & AC_ERR_DEV)) {
- cmd->result = SAM_STAT_CHECK_CONDITION;
- atapi_request_sense(qc);
- return;
- } else if (unlikely(err_mask)) {
- /* FIXME: not quite right; we don't want the
- * translation of taskfile registers into
- * a sense descriptors, since that's only
- * correct for ATA, not ATAPI
- */
- ata_gen_passthru_sense(qc);
- } else {
- if (cmd->cmnd[0] == INQUIRY && (cmd->cmnd[1] & 0x03) == 0)
- atapi_fixup_inquiry(cmd);
- cmd->result = SAM_STAT_GOOD;
- }
+ /* successful completion path */
+ if (cmd->cmnd[0] == INQUIRY && (cmd->cmnd[1] & 0x03) == 0)
+ atapi_fixup_inquiry(cmd);
+ cmd->result = SAM_STAT_GOOD;
ata_qc_done(qc);
}
@@ -4790,9 +4654,6 @@ int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel,
unsigned long flags;
int devno, rc = 0;
- if (!ap->ops->error_handler)
- return -EOPNOTSUPP;
-
if (lun != SCAN_WILD_CARD && lun)
return -EINVAL;
diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
index 9d28badfe41d..84471d92cd1b 100644
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -883,31 +883,21 @@ static void ata_hsm_qc_complete(struct ata_queued_cmd *qc, int in_wq)
{
struct ata_port *ap = qc->ap;
- if (ap->ops->error_handler) {
- if (in_wq) {
- /* EH might have kicked in while host lock is
- * released.
- */
- qc = ata_qc_from_tag(ap, qc->tag);
- if (qc) {
- if (likely(!(qc->err_mask & AC_ERR_HSM))) {
- ata_sff_irq_on(ap);
- ata_qc_complete(qc);
- } else
- ata_port_freeze(ap);
- }
- } else {
- if (likely(!(qc->err_mask & AC_ERR_HSM)))
+ if (in_wq) {
+ /* EH might have kicked in while host lock is released. */
+ qc = ata_qc_from_tag(ap, qc->tag);
+ if (qc) {
+ if (likely(!(qc->err_mask & AC_ERR_HSM))) {
+ ata_sff_irq_on(ap);
ata_qc_complete(qc);
- else
+ } else
ata_port_freeze(ap);
}
} else {
- if (in_wq) {
- ata_sff_irq_on(ap);
- ata_qc_complete(qc);
- } else
+ if (likely(!(qc->err_mask & AC_ERR_HSM)))
ata_qc_complete(qc);
+ else
+ ata_port_freeze(ap);
}
}
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 820f7a3a2749..3eeea76c30de 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -1785,7 +1785,7 @@ static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap,
{
struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag);
- if (unlikely(!qc) || !ap->ops->error_handler)
+ if (unlikely(!qc))
return qc;
if ((qc->flags & (ATA_QCFLAG_ACTIVE |
--
2.41.0
