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>
---
drivers/ata/libata-core.c | 158 ++++++++++++++------------------------
drivers/ata/libata-eh.c | 148 +++++++++++++++--------------------
drivers/ata/libata-sata.c | 5 +-
drivers/ata/libata-scsi.c | 21 ++---
drivers/ata/libata-sff.c | 32 +++-----
5 files changed, 139 insertions(+), 225 deletions(-)
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 8bf612bdd61a..920ebea69cd8 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -1556,13 +1556,11 @@ 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);
@@ -1577,10 +1575,7 @@ 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);
@@ -4713,96 +4708,71 @@ 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.
- *
- * 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.
- */
- 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;
-
- /*
- * 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;
- }
+ if (unlikely(qc->err_mask))
+ qc->flags |= ATA_QCFLAG_EH;
- /*
- * 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;
- }
+ /*
+ * 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;
+ }
- WARN_ON_ONCE(ata_port_is_frozen(ap));
+ /*
+ * 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;
+ }
- /* read result TF if requested */
- if (qc->flags & ATA_QCFLAG_RESULT_TF)
- fill_result_tf(qc);
+ WARN_ON_ONCE(ata_port_is_frozen(ap));
- trace_ata_qc_complete_done(qc);
- /* 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;
- 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;
+ /* read result TF if requested */
+ if (qc->flags & ATA_QCFLAG_RESULT_TF)
+ fill_result_tf(qc);
- case ATA_CMD_SLEEP:
- dev->flags |= ATA_DFLAG_SLEEPING;
+ trace_ata_qc_complete_done(qc);
+ /* 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);
@@ -4852,7 +4822,7 @@ void ata_qc_issue(struct ata_queued_cmd *qc)
* 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));
+ WARN_ON_ONCE(ata_tag_valid(link->active_tag));
if (ata_is_ncq(prot)) {
WARN_ON_ONCE(link->sactive & (1 << qc->hw_tag));
@@ -5725,15 +5695,9 @@ 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;
}
@@ -5938,9 +5902,6 @@ 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;
@@ -5955,7 +5916,6 @@ static void ata_port_detach(struct ata_port *ap)
cancel_delayed_work_sync(&ap->hotplug_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 a6c901811802..b41a578a8c8b 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -571,9 +571,6 @@ 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 */
/*
@@ -659,94 +656,89 @@ 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 +904,6 @@ 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 +924,6 @@ 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 +977,6 @@ 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 +1051,6 @@ 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 +1075,6 @@ 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 +1094,6 @@ 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 +1113,6 @@ 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 f3e7396e3191..bd2a754b645c 100644
--- a/drivers/ata/libata-sata.c
+++ b/drivers/ata/libata-sata.c
@@ -1138,11 +1138,8 @@ 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
+ * the port is marked as frozen at allocation time
*/
- if (!ap->ops->error_handler)
- ap->pflags &= ~ATA_PFLAG_FROZEN;
return 0;
}
EXPORT_SYMBOL_GPL(ata_sas_port_start);
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 7bb12deab70c..cad8e826b262 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -906,7 +906,6 @@ 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);
@@ -918,7 +917,7 @@ 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, false);
ata_scsi_set_sense(qc->dev, cmd, sense_key, asc, ascq);
} else {
/*
@@ -1001,7 +1000,6 @@ 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;
@@ -1019,7 +1017,7 @@ 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, false);
ata_scsi_set_sense(dev, cmd, sense_key, asc, ascq);
} else {
/* Could not decode error */
@@ -1181,9 +1179,6 @@ 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) {
@@ -1656,7 +1651,6 @@ 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) &&
@@ -1680,9 +1674,8 @@ 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);
-
+ if (!(qc->flags & ATA_QCFLAG_QUIET))
+ ata_dump_status(qc->ap, &qc->result_tf);
ata_qc_done(qc);
}
@@ -2548,8 +2541,7 @@ static void atapi_qc_complete(struct ata_queued_cmd *qc)
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))) {
+ 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
@@ -4519,9 +4511,6 @@ 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..aa286d48e847 100644
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -883,31 +883,23 @@ 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);
}
}
--
2.35.3
