diff options
Diffstat (limited to 'target/linux/oxnas/patches-4.4/999-libata-hacks.patch')
| -rw-r--r-- | target/linux/oxnas/patches-4.4/999-libata-hacks.patch | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/target/linux/oxnas/patches-4.4/999-libata-hacks.patch b/target/linux/oxnas/patches-4.4/999-libata-hacks.patch new file mode 100644 index 0000000000..e9208aea4c --- /dev/null +++ b/target/linux/oxnas/patches-4.4/999-libata-hacks.patch @@ -0,0 +1,57 @@ +--- a/drivers/ata/libata-core.c ++++ b/drivers/ata/libata-core.c +@@ -1589,6 +1589,14 @@ unsigned ata_exec_internal_sg(struct ata + return AC_ERR_SYSTEM; + } + ++ if (ap->ops->acquire_hw && !ap->ops->acquire_hw(ap, 0, 0)) { ++ spin_unlock_irqrestore(ap->lock, flags); ++ if (!ap->ops->acquire_hw(ap, 1, (2*HZ))) { ++ return AC_ERR_TIMEOUT; ++ } ++ spin_lock_irqsave(ap->lock, flags); ++ } ++ + /* initialize internal qc */ + + /* XXX: Tag 0 is used for drivers with legacy EH as some +@@ -4781,6 +4789,9 @@ struct ata_queued_cmd *ata_qc_new_init(s + if (unlikely(ap->pflags & ATA_PFLAG_FROZEN)) + return NULL; + ++ if (ap->ops->qc_new && ap->ops->qc_new(ap)) ++ return NULL; ++ + /* libsas case */ + if (ap->flags & ATA_FLAG_SAS_HOST) { + tag = ata_sas_allocate_tag(ap); +@@ -4826,6 +4837,8 @@ void ata_qc_free(struct ata_queued_cmd * + qc->tag = ATA_TAG_POISON; + if (ap->flags & ATA_FLAG_SAS_HOST) + ata_sas_free_tag(tag, ap); ++ if (ap->ops->qc_free) ++ ap->ops->qc_free(qc); + } + } + +--- a/include/linux/libata.h ++++ b/include/linux/libata.h +@@ -906,6 +906,8 @@ struct ata_port_operations { + void (*qc_prep)(struct ata_queued_cmd *qc); + unsigned int (*qc_issue)(struct ata_queued_cmd *qc); + bool (*qc_fill_rtf)(struct ata_queued_cmd *qc); ++ int (*qc_new)(struct ata_port *ap); ++ void (*qc_free)(struct ata_queued_cmd *qc); + + /* + * Configuration and exception handling +@@ -996,6 +998,9 @@ struct ata_port_operations { + void (*phy_reset)(struct ata_port *ap); + void (*eng_timeout)(struct ata_port *ap); + ++ int (*acquire_hw)(struct ata_port *ap, int may_sleep, ++ int timeout_jiffies); ++ + /* + * ->inherits must be the last field and all the preceding + * fields must be pointers. |