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authorJohn Crispin <john@openwrt.org>2015-03-21 21:47:03 +0000
committerJohn Crispin <john@openwrt.org>2015-03-21 21:47:03 +0000
commit3256194aff475c16a0804690eff105a384e7307b (patch)
tree473fd150f89a1845fe22ad28c2890ddeb4d864bb /target/linux/oxnas/patches-4.0/999-libata-hacks.patch
parent908a82ab61ae1c7b09bbe5c64d8d1001db208a24 (diff)
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oxnas: add support for kernel 4.0
Signed-off-by: Daniel Golle <daniel@makrotopia.org> SVN-Revision: 44922
Diffstat (limited to 'target/linux/oxnas/patches-4.0/999-libata-hacks.patch')
-rw-r--r--target/linux/oxnas/patches-4.0/999-libata-hacks.patch61
1 files changed, 61 insertions, 0 deletions
diff --git a/target/linux/oxnas/patches-4.0/999-libata-hacks.patch b/target/linux/oxnas/patches-4.0/999-libata-hacks.patch
new file mode 100644
index 0000000000..399d821c2c
--- /dev/null
+++ b/target/linux/oxnas/patches-4.0/999-libata-hacks.patch
@@ -0,0 +1,61 @@
+Index: linux-4.0-rc4/drivers/ata/libata-core.c
+===================================================================
+--- linux-4.0-rc4.orig/drivers/ata/libata-core.c
++++ linux-4.0-rc4/drivers/ata/libata-core.c
+@@ -1586,6 +1586,14 @@ 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
+@@ -4749,6 +4757,9 @@ 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->scsi_host) {
+ tag = ata_sas_allocate_tag(ap);
+@@ -4794,6 +4805,8 @@ void ata_qc_free(struct ata_queued_cmd *
+ qc->tag = ATA_TAG_POISON;
+ if (!ap->scsi_host)
+ ata_sas_free_tag(tag, ap);
++ if (ap->ops->qc_free)
++ ap->ops->qc_free(qc);
+ }
+ }
+
+Index: linux-4.0-rc4/include/linux/libata.h
+===================================================================
+--- linux-4.0-rc4.orig/include/linux/libata.h
++++ linux-4.0-rc4/include/linux/libata.h
+@@ -893,6 +893,8 @@ 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
+@@ -983,6 +985,9 @@ 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.