diff options
Diffstat (limited to 'drivers/ata/libata-core.c')
| -rw-r--r-- | drivers/ata/libata-core.c | 31 |
1 files changed, 23 insertions, 8 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 0ddaf43d68c6..22ff51bdbc8a 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -4919,10 +4919,11 @@ struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev) */ void ata_qc_free(struct ata_queued_cmd *qc) { - struct ata_port *ap = qc->ap; + struct ata_port *ap; unsigned int tag; WARN_ON_ONCE(qc == NULL); /* ata_qc_from_tag _might_ return NULL */ + ap = qc->ap; qc->flags = 0; tag = qc->tag; @@ -4934,11 +4935,13 @@ void ata_qc_free(struct ata_queued_cmd *qc) void __ata_qc_complete(struct ata_queued_cmd *qc) { - struct ata_port *ap = qc->ap; - struct ata_link *link = qc->dev->link; + struct ata_port *ap; + struct ata_link *link; WARN_ON_ONCE(qc == NULL); /* ata_qc_from_tag _might_ return NULL */ WARN_ON_ONCE(!(qc->flags & ATA_QCFLAG_ACTIVE)); + ap = qc->ap; + link = qc->dev->link; if (likely(qc->flags & ATA_QCFLAG_DMAMAP)) ata_sg_clean(qc); @@ -5028,12 +5031,14 @@ void ata_qc_complete(struct ata_queued_cmd *qc) qc->flags |= ATA_QCFLAG_FAILED; if (unlikely(qc->flags & ATA_QCFLAG_FAILED)) { - if (!ata_tag_internal(qc->tag)) { - /* always fill result TF for failed qc */ - fill_result_tf(qc); + /* always fill result TF for failed qc */ + fill_result_tf(qc); + + if (!ata_tag_internal(qc->tag)) ata_qc_schedule_eh(qc); - return; - } + else + __ata_qc_complete(qc); + return; } WARN_ON_ONCE(ap->pflags & ATA_PFLAG_FROZEN); @@ -5591,6 +5596,9 @@ void ata_link_init(struct ata_port *ap, struct ata_link *link, int pmp) dev->link = link; dev->devno = dev - link->device; +#ifdef CONFIG_ATA_ACPI + dev->gtf_filter = ata_acpi_gtf_filter; +#endif ata_dev_init(dev); } } @@ -6608,6 +6616,13 @@ static int __init ata_init(void) { ata_parse_force_param(); + /* + * FIXME: In UP case, there is only one workqueue thread and if you + * have more than one PIO device, latency is bloody awful, with + * occasional multi-second "hiccups" as one PIO device waits for + * another. It's an ugly wart that users DO occasionally complain + * about; luckily most users have at most one PIO polled device. + */ ata_wq = create_workqueue("ata"); if (!ata_wq) goto free_force_tbl; |