diff options
| -rw-r--r-- | drivers/ata/libata-core.c | 19 | ||||
| -rw-r--r-- | drivers/ata/libata-eh.c | 33 | ||||
| -rw-r--r-- | include/linux/libata.h | 3 |
3 files changed, 53 insertions, 2 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 86c10cc751e..124b6f111cc 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -5797,6 +5797,22 @@ static void fill_result_tf(struct ata_queued_cmd *qc) ap->ops->tf_read(ap, &qc->result_tf); } +static void ata_verify_xfer(struct ata_queued_cmd *qc) +{ + struct ata_device *dev = qc->dev; + + if (ata_tag_internal(qc->tag)) + return; + + if (ata_is_nodata(qc->tf.protocol)) + return; + + if ((dev->mwdma_mask || dev->udma_mask) && ata_is_pio(qc->tf.protocol)) + return; + + dev->flags &= ~ATA_DFLAG_DUBIOUS_XFER; +} + /** * ata_qc_complete - Complete an active ATA command * @qc: Command to complete @@ -5868,6 +5884,9 @@ void ata_qc_complete(struct ata_queued_cmd *qc) break; } + if (unlikely(dev->flags & ATA_DFLAG_DUBIOUS_XFER)) + ata_verify_xfer(qc); + __ata_qc_complete(qc); } else { if (qc->flags & ATA_QCFLAG_EH_SCHEDULED) diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index 7d766ada7a5..359a5ace847 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -456,9 +456,20 @@ void ata_scsi_error(struct Scsi_Host *host) spin_lock_irqsave(ap->lock, flags); __ata_port_for_each_link(link, ap) { + 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)); + + ata_link_for_each_dev(dev, link) { + int devno = dev->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; @@ -2376,11 +2387,27 @@ static int ata_eh_revalidate_and_attach(struct ata_link *link, int ata_set_mode(struct ata_link *link, struct ata_device **r_failed_dev) { struct ata_port *ap = link->ap; + struct ata_device *dev; + int rc; /* has private set_mode? */ if (ap->ops->set_mode) - return ap->ops->set_mode(link, r_failed_dev); - return ata_do_set_mode(link, r_failed_dev); + rc = ap->ops->set_mode(link, r_failed_dev); + else + rc = ata_do_set_mode(link, r_failed_dev); + + /* if transfer mode has changed, set DUBIOUS_XFER on device */ + ata_link_for_each_dev(dev, link) { + struct ata_eh_context *ehc = &link->eh_context; + u8 saved_xfer_mode = ehc->saved_xfer_mode[dev->devno]; + u8 saved_ncq = !!(ehc->saved_ncq_enabled & (1 << dev->devno)); + + if (dev->xfer_mode != saved_xfer_mode || + ata_ncq_enabled(dev) != saved_ncq) + dev->flags |= ATA_DFLAG_DUBIOUS_XFER; + } + + return rc; } static int ata_link_nr_enabled(struct ata_link *link) @@ -2441,6 +2468,8 @@ static int ata_eh_schedule_probe(struct ata_device *dev) ata_dev_init(dev); ehc->did_probe_mask |= (1 << dev->devno); ehc->i.action |= ATA_EH_SOFTRESET; + ehc->saved_xfer_mode[dev->devno] = 0; + ehc->saved_ncq_enabled &= ~(1 << dev->devno); return 1; } diff --git a/include/linux/libata.h b/include/linux/libata.h index 74f1255e252..131fb6625e1 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -143,6 +143,7 @@ enum { ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */ ATA_DFLAG_SPUNDOWN = (1 << 14), /* XXX: for spindown_compat */ ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */ + ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */ ATA_DFLAG_INIT_MASK = (1 << 24) - 1, ATA_DFLAG_DETACH = (1 << 24), @@ -560,6 +561,8 @@ struct ata_eh_context { int tries[ATA_MAX_DEVICES]; unsigned int classes[ATA_MAX_DEVICES]; unsigned int did_probe_mask; + unsigned int saved_ncq_enabled; + u8 saved_xfer_mode[ATA_MAX_DEVICES]; }; struct ata_acpi_drive |