diff --git a/[refs] b/[refs]
index 3fe3c96141f7..b77f45af5f40 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 437105f2a7f23899fd647e7ada683ba8dacf11ba
+refs/heads/master: a186b4a6b22fdc96a1ed63da483d267b5d00839e
diff --git a/trunk/arch/ia64/Makefile b/trunk/arch/ia64/Makefile
index b916ccfdef84..34951aa2370b 100644
--- a/trunk/arch/ia64/Makefile
+++ b/trunk/arch/ia64/Makefile
@@ -77,7 +77,7 @@ vmlinux.gz: vmlinux
 	$(Q)$(MAKE) $(build)=$(boot) $@
 
 unwcheck: vmlinux
-	-$(Q)READELF=$(READELF) python $(srctree)/arch/ia64/scripts/unwcheck.py $<
+	-$(Q)READELF=$(READELF) $(srctree)/arch/ia64/scripts/unwcheck.py $<
 
 archclean:
 	$(Q)$(MAKE) $(clean)=$(boot)
diff --git a/trunk/arch/ia64/hp/sim/boot/Makefile b/trunk/arch/ia64/hp/sim/boot/Makefile
index 2e805e0cc560..df6e9968c845 100644
--- a/trunk/arch/ia64/hp/sim/boot/Makefile
+++ b/trunk/arch/ia64/hp/sim/boot/Makefile
@@ -33,5 +33,5 @@ $(obj)/vmlinux.bin: vmlinux FORCE
 LDFLAGS_bootloader = -static -T
 
 $(obj)/bootloader: $(src)/bootloader.lds $(obj)/bootloader.o $(obj)/boot_head.o $(obj)/fw-emu.o \
-                   lib/lib.a arch/ia64/lib/built-in.o arch/ia64/lib/lib.a FORCE
+                   lib/lib.a arch/ia64/lib/lib.a FORCE
 	$(call if_changed,ld)
diff --git a/trunk/arch/ia64/hp/sim/boot/bootloader.lds b/trunk/arch/ia64/hp/sim/boot/bootloader.lds
index 3977f25a1265..69ae58531033 100644
--- a/trunk/arch/ia64/hp/sim/boot/bootloader.lds
+++ b/trunk/arch/ia64/hp/sim/boot/bootloader.lds
@@ -22,11 +22,10 @@ SECTIONS
   .sdata     : { *(.sdata) }
   _edata  =  .;
 
-  __bss_start = .;
+  _bss = .;
   .sbss      : { *(.sbss) *(.scommon) }
   .bss       : { *(.bss) *(COMMON) }
   . = ALIGN(64 / 8);
-  __bss_stop = .;
   _end = . ;
 
   /* Stabs debugging sections.  */
diff --git a/trunk/arch/ia64/kernel/acpi.c b/trunk/arch/ia64/kernel/acpi.c
index 00b5d08f6da8..897e2083a3b1 100644
--- a/trunk/arch/ia64/kernel/acpi.c
+++ b/trunk/arch/ia64/kernel/acpi.c
@@ -860,7 +860,7 @@ int acpi_map_lsapic(acpi_handle handle, int *pcpu)
 	lsapic = (struct acpi_madt_local_sapic *)obj->buffer.pointer;
 
 	if ((lsapic->header.type != ACPI_MADT_TYPE_LOCAL_SAPIC) ||
-	    (!(lsapic->lapic_flags & ACPI_MADT_ENABLED))) {
+	    (!lsapic->lapic_flags & ACPI_MADT_ENABLED)) {
 		kfree(buffer.pointer);
 		return -EINVAL;
 	}
diff --git a/trunk/arch/ia64/kernel/efi.c b/trunk/arch/ia64/kernel/efi.c
index 242d79341120..8e8f8b6193ee 100644
--- a/trunk/arch/ia64/kernel/efi.c
+++ b/trunk/arch/ia64/kernel/efi.c
@@ -370,7 +370,7 @@ efi_get_pal_addr (void)
 			continue;
 		}
 
-		if (efi_md_size(md) > IA64_GRANULE_SIZE)
+		if (md->num_pages << EFI_PAGE_SHIFT > IA64_GRANULE_SIZE)
 			panic("Woah!  PAL code size bigger than a granule!");
 
 #if EFI_DEBUG
@@ -378,7 +378,7 @@ efi_get_pal_addr (void)
 
 		printk(KERN_INFO "CPU %d: mapping PAL code [0x%lx-0x%lx) into [0x%lx-0x%lx)\n",
 			smp_processor_id(), md->phys_addr,
-			md->phys_addr + efi_md_size(md),
+			md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT),
 			vaddr & mask, (vaddr & mask) + IA64_GRANULE_SIZE);
 #endif
 		return __va(md->phys_addr);
@@ -523,7 +523,7 @@ efi_init (void)
 			md = p;
 			printk("mem%02u: type=%u, attr=0x%lx, range=[0x%016lx-0x%016lx) (%luMB)\n",
 			       i, md->type, md->attribute, md->phys_addr,
-			       md->phys_addr + efi_md_size(md),
+			       md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT),
 			       md->num_pages >> (20 - EFI_PAGE_SHIFT));
 		}
 	}
@@ -656,7 +656,7 @@ efi_memory_descriptor (unsigned long phys_addr)
 	for (p = efi_map_start; p < efi_map_end; p += efi_desc_size) {
 		md = p;
 
-		if (phys_addr - md->phys_addr < efi_md_size(md))
+		if (phys_addr - md->phys_addr < (md->num_pages << EFI_PAGE_SHIFT))
 			 return md;
 	}
 	return NULL;
@@ -1158,7 +1158,7 @@ efi_initialize_iomem_resources(struct resource *code_resource,
 
 		res->name = name;
 		res->start = md->phys_addr;
-		res->end = md->phys_addr + efi_md_size(md) - 1;
+		res->end = md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT) - 1;
 		res->flags = flags;
 
 		if (insert_resource(&iomem_resource, res) < 0)
diff --git a/trunk/arch/ia64/kernel/gate.lds.S b/trunk/arch/ia64/kernel/gate.lds.S
index 3cb1abc00e24..454d7a7dfa9d 100644
--- a/trunk/arch/ia64/kernel/gate.lds.S
+++ b/trunk/arch/ia64/kernel/gate.lds.S
@@ -30,7 +30,7 @@ SECTIONS
 	 * the dynamic symbol table et al.  If this amount is insufficient,
 	 * ld -shared will barf.  Just increase it here.
 	 */
-	. = GATE_ADDR + 0x600;
+	. = GATE_ADDR + 0x500;
 
 	.data.patch		: {
 		__start_gate_mckinley_e9_patchlist = .;
diff --git a/trunk/arch/ia64/kernel/ia64_ksyms.c b/trunk/arch/ia64/kernel/ia64_ksyms.c
index c3b4412ccc67..bd17190bebb6 100644
--- a/trunk/arch/ia64/kernel/ia64_ksyms.c
+++ b/trunk/arch/ia64/kernel/ia64_ksyms.c
@@ -63,9 +63,6 @@ EXPORT_SYMBOL(__udivdi3);
 EXPORT_SYMBOL(__moddi3);
 EXPORT_SYMBOL(__umoddi3);
 
-#include <asm/page.h>
-EXPORT_SYMBOL(copy_page);
-
 #if defined(CONFIG_MD_RAID456) || defined(CONFIG_MD_RAID456_MODULE)
 extern void xor_ia64_2(void);
 extern void xor_ia64_3(void);
diff --git a/trunk/arch/ia64/kernel/iosapic.c b/trunk/arch/ia64/kernel/iosapic.c
index 398e2fd1cd25..274a59383043 100644
--- a/trunk/arch/ia64/kernel/iosapic.c
+++ b/trunk/arch/ia64/kernel/iosapic.c
@@ -199,6 +199,19 @@ static inline int __gsi_to_irq(unsigned int gsi)
 	return -1;
 }
 
+/*
+ * Translate GSI number to the corresponding IA-64 interrupt vector.  If no
+ * entry exists, return -1.
+ */
+inline int
+gsi_to_vector (unsigned int gsi)
+{
+	int irq = __gsi_to_irq(gsi);
+	if (check_irq_used(irq) < 0)
+		return -1;
+	return irq_to_vector(irq);
+}
+
 int
 gsi_to_irq (unsigned int gsi)
 {
@@ -416,7 +429,7 @@ iosapic_end_level_irq (unsigned int irq)
 #define iosapic_disable_level_irq	mask_irq
 #define iosapic_ack_level_irq		nop
 
-static struct irq_chip irq_type_iosapic_level = {
+struct irq_chip irq_type_iosapic_level = {
 	.name =		"IO-SAPIC-level",
 	.startup =	iosapic_startup_level_irq,
 	.shutdown =	iosapic_shutdown_level_irq,
@@ -465,7 +478,7 @@ iosapic_ack_edge_irq (unsigned int irq)
 #define iosapic_disable_edge_irq	nop
 #define iosapic_end_edge_irq		nop
 
-static struct irq_chip irq_type_iosapic_edge = {
+struct irq_chip irq_type_iosapic_edge = {
 	.name =		"IO-SAPIC-edge",
 	.startup =	iosapic_startup_edge_irq,
 	.shutdown =	iosapic_disable_edge_irq,
@@ -478,7 +491,7 @@ static struct irq_chip irq_type_iosapic_edge = {
 	.set_affinity =	iosapic_set_affinity
 };
 
-static unsigned int
+unsigned int
 iosapic_version (char __iomem *addr)
 {
 	/*
@@ -925,7 +938,7 @@ iosapic_register_platform_intr (u32 int_type, unsigned int gsi,
 	      case ACPI_INTERRUPT_CPEI:
 		irq = vector = IA64_CPE_VECTOR;
 		BUG_ON(bind_irq_vector(irq, vector, CPU_MASK_ALL));
-		delivery = IOSAPIC_FIXED;
+		delivery = IOSAPIC_LOWEST_PRIORITY;
 		mask = 1;
 		break;
 	      default:
diff --git a/trunk/arch/ia64/kernel/kprobes.c b/trunk/arch/ia64/kernel/kprobes.c
index fc4d2676264f..5fd65d8302c8 100644
--- a/trunk/arch/ia64/kernel/kprobes.c
+++ b/trunk/arch/ia64/kernel/kprobes.c
@@ -182,8 +182,8 @@ static int __kprobes unsupported_inst(uint template, uint  slot,
 	qp = kprobe_inst & 0x3f;
 	if (is_cmp_ctype_unc_inst(template, slot, major_opcode, kprobe_inst)) {
 		if (slot == 1 && qp)  {
-			printk(KERN_WARNING "Kprobes on cmp unc "
-					"instruction on slot 1 at <0x%lx> "
+			printk(KERN_WARNING "Kprobes on cmp unc"
+					"instruction on slot 1 at <0x%lx>"
 					"is not supported\n", addr);
 			return -EINVAL;
 
@@ -221,8 +221,8 @@ static int __kprobes unsupported_inst(uint template, uint  slot,
 			 * bit 12 to be equal to 1
 			 */
 			if (slot == 1 && qp) {
-				printk(KERN_WARNING "Kprobes on test bit "
-						"instruction on slot at <0x%lx> "
+				printk(KERN_WARNING "Kprobes on test bit"
+						"instruction on slot at <0x%lx>"
 						"is not supported\n", addr);
 				return -EINVAL;
 			}
@@ -242,7 +242,7 @@ static int __kprobes unsupported_inst(uint template, uint  slot,
 			 */
 			int x6=(kprobe_inst >> 27) & 0x3F;
 			if ((x6 == 0x10) || (x6 == 0x11)) {
-				printk(KERN_WARNING "Kprobes on "
+				printk(KERN_WARNING "Kprobes on"
 					"Indirect Predict is not supported\n");
 				return -EINVAL;
 			}
@@ -430,23 +430,6 @@ int __kprobes trampoline_probe_handler(struct kprobe *p, struct pt_regs *regs)
 	 *       real return address, and all the rest will point to
 	 *       kretprobe_trampoline
 	 */
-	hlist_for_each_entry_safe(ri, node, tmp, head, hlist) {
-		if (ri->task != current)
-			/* another task is sharing our hash bucket */
-			continue;
-
-		orig_ret_address = (unsigned long)ri->ret_addr;
-		if (orig_ret_address != trampoline_address)
-			/*
-			 * This is the real return address. Any other
-			 * instances associated with this task are for
-			 * other calls deeper on the call stack
-			 */
-			break;
-	}
-
-	regs->cr_iip = orig_ret_address;
-
 	hlist_for_each_entry_safe(ri, node, tmp, head, hlist) {
 		if (ri->task != current)
 			/* another task is sharing our hash bucket */
@@ -469,6 +452,8 @@ int __kprobes trampoline_probe_handler(struct kprobe *p, struct pt_regs *regs)
 
 	kretprobe_assert(ri, orig_ret_address, trampoline_address);
 
+	regs->cr_iip = orig_ret_address;
+
 	reset_current_kprobe();
 	spin_unlock_irqrestore(&kretprobe_lock, flags);
 	preempt_enable_no_resched();
diff --git a/trunk/arch/ia64/kernel/setup.c b/trunk/arch/ia64/kernel/setup.c
index 4ac2b1f1bd3b..2b3751eef5ce 100644
--- a/trunk/arch/ia64/kernel/setup.c
+++ b/trunk/arch/ia64/kernel/setup.c
@@ -95,6 +95,7 @@ static struct resource bss_resource = {
 	.name	= "Kernel bss",
 	.flags	= IORESOURCE_BUSY | IORESOURCE_MEM
 };
+extern char _text[], _end[], _etext[], _edata[], _bss[];
 
 unsigned long ia64_max_cacheline_size;
 
@@ -205,7 +206,7 @@ static int __init register_memory(void)
 	code_resource.end   = ia64_tpa(_etext) - 1;
 	data_resource.start = ia64_tpa(_etext);
 	data_resource.end   = ia64_tpa(_edata) - 1;
-	bss_resource.start  = ia64_tpa(__bss_start);
+	bss_resource.start  = ia64_tpa(_bss);
 	bss_resource.end    = ia64_tpa(_end) - 1;
 	efi_initialize_iomem_resources(&code_resource, &data_resource,
 			&bss_resource);
diff --git a/trunk/arch/ia64/kernel/signal.c b/trunk/arch/ia64/kernel/signal.c
index 4c730099d58f..cdb64cc4d9c8 100644
--- a/trunk/arch/ia64/kernel/signal.c
+++ b/trunk/arch/ia64/kernel/signal.c
@@ -98,7 +98,7 @@ restore_sigcontext (struct sigcontext __user *sc, struct sigscratch *scr)
 	if ((flags & IA64_SC_FLAG_FPH_VALID) != 0) {
 		struct ia64_psr *psr = ia64_psr(&scr->pt);
 
-		err |= __copy_from_user(current->thread.fph, &sc->sc_fr[32], 96*16);
+		__copy_from_user(current->thread.fph, &sc->sc_fr[32], 96*16);
 		psr->mfh = 0;	/* drop signal handler's fph contents... */
 		preempt_disable();
 		if (psr->dfh)
@@ -244,7 +244,7 @@ static long
 setup_sigcontext (struct sigcontext __user *sc, sigset_t *mask, struct sigscratch *scr)
 {
 	unsigned long flags = 0, ifs, cfm, nat;
-	long err = 0;
+	long err;
 
 	ifs = scr->pt.cr_ifs;
 
@@ -257,12 +257,12 @@ setup_sigcontext (struct sigcontext __user *sc, sigset_t *mask, struct sigscratc
 	ia64_flush_fph(current);
 	if ((current->thread.flags & IA64_THREAD_FPH_VALID)) {
 		flags |= IA64_SC_FLAG_FPH_VALID;
-		err = __copy_to_user(&sc->sc_fr[32], current->thread.fph, 96*16);
+		__copy_to_user(&sc->sc_fr[32], current->thread.fph, 96*16);
 	}
 
 	nat = ia64_get_scratch_nat_bits(&scr->pt, scr->scratch_unat);
 
-	err |= __put_user(flags, &sc->sc_flags);
+	err  = __put_user(flags, &sc->sc_flags);
 	err |= __put_user(nat, &sc->sc_nat);
 	err |= PUT_SIGSET(mask, &sc->sc_mask);
 	err |= __put_user(cfm, &sc->sc_cfm);
diff --git a/trunk/arch/ia64/kernel/vmlinux.lds.S b/trunk/arch/ia64/kernel/vmlinux.lds.S
index 757e419ebcf8..00232b4357ba 100644
--- a/trunk/arch/ia64/kernel/vmlinux.lds.S
+++ b/trunk/arch/ia64/kernel/vmlinux.lds.S
@@ -240,12 +240,11 @@ SECTIONS
   .sdata : AT(ADDR(.sdata) - LOAD_OFFSET)
 	{ *(.sdata) *(.sdata1) *(.srdata) }
   _edata  =  .;
-  __bss_start = .;
+  _bss = .;
   .sbss : AT(ADDR(.sbss) - LOAD_OFFSET)
 	{ *(.sbss) *(.scommon) }
   .bss : AT(ADDR(.bss) - LOAD_OFFSET)
 	{ *(.bss) *(COMMON) }
-  __bss_stop = .;
 
   _end = .;
 
diff --git a/trunk/arch/ia64/lib/Makefile b/trunk/arch/ia64/lib/Makefile
index 98771e2a78af..46edf8444c7e 100644
--- a/trunk/arch/ia64/lib/Makefile
+++ b/trunk/arch/ia64/lib/Makefile
@@ -11,8 +11,8 @@ lib-y := __divsi3.o __udivsi3.o __modsi3.o __umodsi3.o			\
 	flush.o ip_fast_csum.o do_csum.o				\
 	memset.o strlen.o xor.o
 
-obj-$(CONFIG_ITANIUM)	+= copy_page.o copy_user.o memcpy.o
-obj-$(CONFIG_MCKINLEY)	+= copy_page_mck.o memcpy_mck.o
+lib-$(CONFIG_ITANIUM)	+= copy_page.o copy_user.o memcpy.o
+lib-$(CONFIG_MCKINLEY)	+= copy_page_mck.o memcpy_mck.o
 lib-$(CONFIG_PERFMON)	+= carta_random.o
 
 AFLAGS___divdi3.o	=
diff --git a/trunk/arch/ia64/mm/tlb.c b/trunk/arch/ia64/mm/tlb.c
index cef164729db7..1682fc639038 100644
--- a/trunk/arch/ia64/mm/tlb.c
+++ b/trunk/arch/ia64/mm/tlb.c
@@ -180,7 +180,7 @@ ia64_tlb_init (void)
 	long status;
 
 	if ((status = ia64_pal_vm_page_size(&tr_pgbits, &purge.mask)) != 0) {
-		printk(KERN_ERR "PAL_VM_PAGE_SIZE failed with status=%ld; "
+		printk(KERN_ERR "PAL_VM_PAGE_SIZE failed with status=%ld;"
 		       "defaulting to architected purge page-sizes.\n", status);
 		purge.mask = 0x115557000UL;
 	}
diff --git a/trunk/arch/ia64/scripts/unwcheck.py b/trunk/arch/ia64/scripts/unwcheck.py
old mode 100644
new mode 100755
diff --git a/trunk/arch/ia64/sn/kernel/io_common.c b/trunk/arch/ia64/sn/kernel/io_common.c
index c4eb84f9e781..4594770e685a 100644
--- a/trunk/arch/ia64/sn/kernel/io_common.c
+++ b/trunk/arch/ia64/sn/kernel/io_common.c
@@ -347,7 +347,7 @@ sn_common_bus_fixup(struct pci_bus *bus,
 	if (controller->node >= num_online_nodes()) {
 		struct pcibus_bussoft *b = SN_PCIBUS_BUSSOFT(bus);
 
-		printk(KERN_WARNING "Device ASIC=%u XID=%u PBUSNUM=%u "
+		printk(KERN_WARNING "Device ASIC=%u XID=%u PBUSNUM=%u"
 		       "L_IO=%lx L_MEM=%lx BASE=%lx\n",
 		       b->bs_asic_type, b->bs_xid, b->bs_persist_busnum,
 		       b->bs_legacy_io, b->bs_legacy_mem, b->bs_base);
@@ -545,18 +545,19 @@ sn_io_late_init(void)
 		nasid = NASID_GET(bussoft->bs_base);
 		cnode = nasid_to_cnodeid(nasid);
 		if ((bussoft->bs_asic_type == PCIIO_ASIC_TYPE_TIOCP) ||
-		    (bussoft->bs_asic_type == PCIIO_ASIC_TYPE_TIOCE) ||
-		    (bussoft->bs_asic_type == PCIIO_ASIC_TYPE_PIC)) {
-			/* PCI Bridge: find nearest node with CPUs */
+		    (bussoft->bs_asic_type == PCIIO_ASIC_TYPE_TIOCE)) {
+			/* TIO PCI Bridge: find nearest node with CPUs */
 			int e = sn_hwperf_get_nearest_node(cnode, NULL,
 							   &near_cnode);
 			if (e < 0) {
 				near_cnode = (cnodeid_t)-1; /* use any node */
-				printk(KERN_WARNING "sn_io_late_init: failed "
-				       "to find near node with CPUs for "
+				printk(KERN_WARNING "pcibr_bus_fixup: failed "
+				       "to find near node with CPUs to TIO "
 				       "node %d, err=%d\n", cnode, e);
 			}
 			PCI_CONTROLLER(bus)->node = near_cnode;
+		} else if (bussoft->bs_asic_type == PCIIO_ASIC_TYPE_PIC) {
+			PCI_CONTROLLER(bus)->node = cnode;
 		}
 	}
 
diff --git a/trunk/drivers/firewire/fw-ohci.c b/trunk/drivers/firewire/fw-ohci.c
index c9b9081831da..436a855a4c60 100644
--- a/trunk/drivers/firewire/fw-ohci.c
+++ b/trunk/drivers/firewire/fw-ohci.c
@@ -437,6 +437,21 @@ static void ar_context_run(struct ar_context *ctx)
 	flush_writes(ctx->ohci);
 }
 
+static struct descriptor *
+find_branch_descriptor(struct descriptor *d, int z)
+{
+	int b, key;
+
+	b   = (le16_to_cpu(d->control) & DESCRIPTOR_BRANCH_ALWAYS) >> 2;
+	key = (le16_to_cpu(d->control) & DESCRIPTOR_KEY_IMMEDIATE) >> 8;
+
+	/* figure out which descriptor the branch address goes in */
+	if (z == 2 && (b == 3 || key == 2))
+		return d;
+	else
+		return d + z - 1;
+}
+
 static void context_tasklet(unsigned long data)
 {
 	struct context *ctx = (struct context *) data;
@@ -455,7 +470,7 @@ static void context_tasklet(unsigned long data)
 		address = le32_to_cpu(last->branch_address);
 		z = address & 0xf;
 		d = ctx->buffer + (address - ctx->buffer_bus) / sizeof(*d);
-		last = (z == 2) ? d : d + z - 1;
+		last = find_branch_descriptor(d, z);
 
 		if (!ctx->callback(ctx, d, last))
 			break;
@@ -566,7 +581,7 @@ static void context_append(struct context *ctx,
 
 	ctx->head_descriptor = d + z + extra;
 	ctx->prev_descriptor->branch_address = cpu_to_le32(d_bus | z);
-	ctx->prev_descriptor = z == 2 ? d : d + z - 1;
+	ctx->prev_descriptor = find_branch_descriptor(d, z);
 
 	dma_sync_single_for_device(ctx->ohci->card.device, ctx->buffer_bus,
 				   ctx->buffer_size, DMA_TO_DEVICE);
@@ -655,7 +670,7 @@ at_context_queue_packet(struct context *ctx, struct fw_packet *packet)
 	driver_data = (struct driver_data *) &d[3];
 	driver_data->packet = packet;
 	packet->driver_data = driver_data;
-	
+
 	if (packet->payload_length > 0) {
 		payload_bus =
 			dma_map_single(ohci->card.device, packet->payload,
@@ -903,7 +918,7 @@ at_context_transmit(struct context *ctx, struct fw_packet *packet)
 
 	if (retval < 0)
 		packet->callback(packet, &ctx->ohci->card, packet->ack);
-	
+
 }
 
 static void bus_reset_tasklet(unsigned long data)
@@ -1431,6 +1446,57 @@ static int handle_ir_dualbuffer_packet(struct context *context,
 	return 1;
 }
 
+static int handle_ir_packet_per_buffer(struct context *context,
+				       struct descriptor *d,
+				       struct descriptor *last)
+{
+	struct iso_context *ctx =
+		container_of(context, struct iso_context, context);
+	struct descriptor *pd = d + 1;
+	__le32 *ir_header;
+	size_t header_length;
+	void *p, *end;
+	int i, z;
+
+	if (pd->res_count == pd->req_count)
+		/* Descriptor(s) not done yet, stop iteration */
+		return 0;
+
+	header_length = le16_to_cpu(d->req_count);
+
+	i   = ctx->header_length;
+	z   = le32_to_cpu(pd->branch_address) & 0xf;
+	p   = d + z;
+	end = p + header_length;
+
+	while (p < end && i + ctx->base.header_size <= PAGE_SIZE) {
+		/*
+		 * The iso header is byteswapped to little endian by
+		 * the controller, but the remaining header quadlets
+		 * are big endian.  We want to present all the headers
+		 * as big endian, so we have to swap the first quadlet.
+		 */
+		*(u32 *) (ctx->header + i) = __swab32(*(u32 *) (p + 4));
+		memcpy(ctx->header + i + 4, p + 8, ctx->base.header_size - 4);
+		i += ctx->base.header_size;
+		p += ctx->base.header_size + 4;
+	}
+
+	ctx->header_length = i;
+
+	if (le16_to_cpu(pd->control) & DESCRIPTOR_IRQ_ALWAYS) {
+		ir_header = (__le32 *) (d + z);
+		ctx->base.callback(&ctx->base,
+				   le32_to_cpu(ir_header[0]) & 0xffff,
+				   ctx->header_length, ctx->header,
+				   ctx->base.callback_data);
+		ctx->header_length = 0;
+	}
+
+
+	return 1;
+}
+
 static int handle_it_packet(struct context *context,
 			    struct descriptor *d,
 			    struct descriptor *last)
@@ -1466,14 +1532,12 @@ ohci_allocate_iso_context(struct fw_card *card, int type, size_t header_size)
 	} else {
 		mask = &ohci->ir_context_mask;
 		list = ohci->ir_context_list;
-		callback = handle_ir_dualbuffer_packet;
+		if (ohci->version >= OHCI_VERSION_1_1)
+			callback = handle_ir_dualbuffer_packet;
+		else
+			callback = handle_ir_packet_per_buffer;
 	}
 
-	/* FIXME: We need a fallback for pre 1.1 OHCI. */
-	if (callback == handle_ir_dualbuffer_packet &&
-	    ohci->version < OHCI_VERSION_1_1)
-		return ERR_PTR(-ENOSYS);
-
 	spin_lock_irqsave(&ohci->lock, flags);
 	index = ffs(*mask) - 1;
 	if (index >= 0)
@@ -1532,7 +1596,9 @@ static int ohci_start_iso(struct fw_iso_context *base,
 		context_run(&ctx->context, match);
 	} else {
 		index = ctx - ohci->ir_context_list;
-		control = IR_CONTEXT_DUAL_BUFFER_MODE | IR_CONTEXT_ISOCH_HEADER;
+		control = IR_CONTEXT_ISOCH_HEADER;
+		if (ohci->version >= OHCI_VERSION_1_1)
+			control |= IR_CONTEXT_DUAL_BUFFER_MODE;
 		match = (tags << 28) | (sync << 8) | ctx->base.channel;
 		if (cycle >= 0) {
 			match |= (cycle & 0x07fff) << 12;
@@ -1738,7 +1804,6 @@ ohci_queue_iso_receive_dualbuffer(struct fw_iso_context *base,
 	offset   = payload & ~PAGE_MASK;
 	rest     = p->payload_length;
 
-	/* FIXME: OHCI 1.0 doesn't support dual buffer receive */
 	/* FIXME: make packet-per-buffer/dual-buffer a context option */
 	while (rest > 0) {
 		d = context_get_descriptors(&ctx->context,
@@ -1776,6 +1841,81 @@ ohci_queue_iso_receive_dualbuffer(struct fw_iso_context *base,
 	return 0;
 }
 
+static int
+ohci_queue_iso_receive_packet_per_buffer(struct fw_iso_context *base,
+					 struct fw_iso_packet *packet,
+					 struct fw_iso_buffer *buffer,
+					 unsigned long payload)
+{
+	struct iso_context *ctx = container_of(base, struct iso_context, base);
+	struct descriptor *d = NULL, *pd = NULL;
+	struct fw_iso_packet *p;
+	dma_addr_t d_bus, page_bus;
+	u32 z, header_z, rest;
+	int i, page, offset, packet_count, header_size;
+
+	if (packet->skip) {
+		d = context_get_descriptors(&ctx->context, 1, &d_bus);
+		if (d == NULL)
+			return -ENOMEM;
+
+		d->control = cpu_to_le16(DESCRIPTOR_STATUS |
+					 DESCRIPTOR_INPUT_LAST |
+					 DESCRIPTOR_BRANCH_ALWAYS |
+					 DESCRIPTOR_WAIT);
+		context_append(&ctx->context, d, 1, 0);
+	}
+
+	/* one descriptor for header, one for payload */
+	/* FIXME: handle cases where we need multiple desc. for payload */
+	z = 2;
+	p = packet;
+
+	/*
+	 * The OHCI controller puts the status word in the
+	 * buffer too, so we need 4 extra bytes per packet.
+	 */
+	packet_count = p->header_length / ctx->base.header_size;
+	header_size  = packet_count * (ctx->base.header_size + 4);
+
+	/* Get header size in number of descriptors. */
+	header_z = DIV_ROUND_UP(header_size, sizeof(*d));
+	page     = payload >> PAGE_SHIFT;
+	offset   = payload & ~PAGE_MASK;
+	rest     = p->payload_length;
+
+	for (i = 0; i < packet_count; i++) {
+		/* d points to the header descriptor */
+		d = context_get_descriptors(&ctx->context,
+					    z + header_z, &d_bus);
+		if (d == NULL)
+			return -ENOMEM;
+
+		d->control      = cpu_to_le16(DESCRIPTOR_INPUT_MORE);
+		d->req_count    = cpu_to_le16(header_size);
+		d->res_count    = d->req_count;
+		d->data_address = cpu_to_le32(d_bus + (z * sizeof(*d)));
+
+		/* pd points to the payload descriptor */
+		pd = d + 1;
+		pd->control = cpu_to_le16(DESCRIPTOR_STATUS |
+					  DESCRIPTOR_INPUT_LAST |
+					  DESCRIPTOR_BRANCH_ALWAYS);
+		if (p->interrupt)
+			pd->control |= cpu_to_le16(DESCRIPTOR_IRQ_ALWAYS);
+
+		pd->req_count = cpu_to_le16(rest);
+		pd->res_count = pd->req_count;
+
+		page_bus = page_private(buffer->pages[page]);
+		pd->data_address = cpu_to_le32(page_bus + offset);
+
+		context_append(&ctx->context, d, z, header_z);
+	}
+
+	return 0;
+}
+
 static int
 ohci_queue_iso(struct fw_iso_context *base,
 	       struct fw_iso_packet *packet,
@@ -1790,8 +1930,9 @@ ohci_queue_iso(struct fw_iso_context *base,
 		return ohci_queue_iso_receive_dualbuffer(base, packet,
 							 buffer, payload);
 	else
-		/* FIXME: Implement fallback for OHCI 1.0 controllers. */
-		return -ENOSYS;
+		return ohci_queue_iso_receive_packet_per_buffer(base, packet,
+								buffer,
+								payload);
 }
 
 static const struct fw_card_driver ohci_driver = {
@@ -1911,12 +2052,6 @@ pci_probe(struct pci_dev *dev, const struct pci_device_id *ent)
 	ohci->version = reg_read(ohci, OHCI1394_Version) & 0x00ff00ff;
 	fw_notify("Added fw-ohci device %s, OHCI version %x.%x\n",
 		  dev->dev.bus_id, ohci->version >> 16, ohci->version & 0xff);
-	if (ohci->version < OHCI_VERSION_1_1) {
-		fw_notify("    Isochronous I/O is not yet implemented for "
-			  "OHCI 1.0 chips.\n");
-		fw_notify("    Cameras, audio devices etc. won't work on "
-			  "this controller with this driver version.\n");
-	}
 	return 0;
 
  fail_self_id:
diff --git a/trunk/include/asm-ia64/iosapic.h b/trunk/include/asm-ia64/iosapic.h
index a3a4288daae8..b8f712859140 100644
--- a/trunk/include/asm-ia64/iosapic.h
+++ b/trunk/include/asm-ia64/iosapic.h
@@ -80,6 +80,7 @@ extern int iosapic_remove (unsigned int gsi_base);
 #else
 #define iosapic_remove(gsi_base)				(-EINVAL)
 #endif /* CONFIG_HOTPLUG */
+extern int gsi_to_vector (unsigned int gsi);
 extern int gsi_to_irq (unsigned int gsi);
 extern int iosapic_register_intr (unsigned int gsi, unsigned long polarity,
 				  unsigned long trigger);
@@ -93,6 +94,7 @@ extern int __init iosapic_register_platform_intr (u32 int_type,
 					   u16 eid, u16 id,
 					   unsigned long polarity,
 					   unsigned long trigger);
+extern unsigned int iosapic_version (char __iomem *addr);
 
 #ifdef CONFIG_NUMA
 extern void __devinit map_iosapic_to_node (unsigned int, int);