diff --git a/arch/i386/Kconfig b/arch/i386/Kconfig
index 5383e5e2d9b7e564f675516f69b477b280989e02..bac0da731ee3ae98065d5771148648ad1df53940 100644
--- a/arch/i386/Kconfig
+++ b/arch/i386/Kconfig
@@ -1042,8 +1042,3 @@ config X86_TRAMPOLINE
 	bool
 	depends on X86_SMP || (X86_VOYAGER && SMP)
 	default y
-
-config PC
-	bool
-	depends on X86 && !EMBEDDED
-	default y
diff --git a/arch/i386/kernel/apic.c b/arch/i386/kernel/apic.c
index 9204be6eedb3c5e4d25c1add893359de85fda1ab..7c724ffa08bb9617e4a1834fb20e5924565e281f 100644
--- a/arch/i386/kernel/apic.c
+++ b/arch/i386/kernel/apic.c
@@ -803,7 +803,6 @@ static int __init detect_init_APIC (void)
 
 void __init init_apic_mappings(void)
 {
-	unsigned int orig_apicid;
 	unsigned long apic_phys;
 
 	/*
@@ -825,11 +824,8 @@ void __init init_apic_mappings(void)
 	 * Fetch the APIC ID of the BSP in case we have a
 	 * default configuration (or the MP table is broken).
 	 */
-	orig_apicid = boot_cpu_physical_apicid;
-	boot_cpu_physical_apicid = GET_APIC_ID(apic_read(APIC_ID));
-	if ((orig_apicid != -1U) && (orig_apicid != boot_cpu_physical_apicid))
-		printk(KERN_WARNING "Boot APIC ID in local APIC unexpected (%d vs %d)",
-			orig_apicid, boot_cpu_physical_apicid);
+	if (boot_cpu_physical_apicid == -1U)
+		boot_cpu_physical_apicid = GET_APIC_ID(apic_read(APIC_ID));
 
 #ifdef CONFIG_X86_IO_APIC
 	{
@@ -1259,81 +1255,40 @@ fastcall void smp_error_interrupt(struct pt_regs *regs)
 }
 
 /*
- * This initializes the IO-APIC and APIC hardware.
+ * This initializes the IO-APIC and APIC hardware if this is
+ * a UP kernel.
  */
-int __init APIC_init(void)
+int __init APIC_init_uniprocessor (void)
 {
-	if (enable_local_apic < 0) {
-		printk(KERN_INFO "APIC disabled\n");
-		return -1;
-	}
+	if (enable_local_apic < 0)
+		clear_bit(X86_FEATURE_APIC, boot_cpu_data.x86_capability);
 
-	/* See if we have a SMP configuration or have forced enabled
-	 * the local apic.
-	 */
-	if (!smp_found_config && !acpi_lapic && !cpu_has_apic) {
-		enable_local_apic = -1;
+	if (!smp_found_config && !cpu_has_apic)
 		return -1;
-	}
 
 	/*
-	 * Complain if the BIOS pretends there is an apic.
-	 * Then get out because we don't have an a local apic.
+	 * Complain if the BIOS pretends there is one.
 	 */
 	if (!cpu_has_apic && APIC_INTEGRATED(apic_version[boot_cpu_physical_apicid])) {
 		printk(KERN_ERR "BIOS bug, local APIC #%d not detected!...\n",
 			boot_cpu_physical_apicid);
-		printk(KERN_ERR "... forcing use of dummy APIC emulation. (tell your hw vendor)\n");
-		enable_local_apic = -1;
 		return -1;
 	}
 
 	verify_local_APIC();
 
-	/*
-	 * Should not be necessary because the MP table should list the boot
-	 * CPU too, but we do it for the sake of robustness anyway.
-	 * Makes no sense to do this check in clustered apic mode, so skip it
-	 */
-	if (!check_phys_apicid_present(boot_cpu_physical_apicid)) {
-		printk("weird, boot CPU (#%d) not listed by the BIOS.\n",
-				boot_cpu_physical_apicid);
-		physid_set(boot_cpu_physical_apicid, phys_cpu_present_map);
-	}
-
-	/*
-	 * Switch from PIC to APIC mode.
-	 */
 	connect_bsp_APIC();
-	setup_local_APIC();
 
-#ifdef CONFIG_X86_IO_APIC
-	/*
-	 * Now start the IO-APICs
-	 */
-	if (smp_found_config && !skip_ioapic_setup && nr_ioapics)
-		setup_IO_APIC();
-#endif
-	return 0;
-}
+	phys_cpu_present_map = physid_mask_of_physid(boot_cpu_physical_apicid);
 
-void __init APIC_late_time_init(void)
-{
-	/* Improve our loops per jiffy estimate */
-	loops_per_jiffy = ((1000 + HZ - 1)/HZ)*cpu_khz;
-	boot_cpu_data.loops_per_jiffy = loops_per_jiffy;
-	cpu_data[0].loops_per_jiffy = loops_per_jiffy;
-
-	/* setup_apic_nmi_watchdog doesn't work properly before cpu_khz is
-	 * initialized.  So redo it here to ensure the boot cpu is setup
-	 * properly.
-	 */
-	if (nmi_watchdog == NMI_LOCAL_APIC)
-		setup_apic_nmi_watchdog();
+	setup_local_APIC();
 
 #ifdef CONFIG_X86_IO_APIC
-	if (smp_found_config && !skip_ioapic_setup && nr_ioapics)
-		IO_APIC_late_time_init();
+	if (smp_found_config)
+		if (!skip_ioapic_setup && nr_ioapics)
+			setup_IO_APIC();
 #endif
 	setup_boot_APIC_clock();
+
+	return 0;
 }
diff --git a/arch/i386/kernel/i8259.c b/arch/i386/kernel/i8259.c
index d86f2490928449ce15acfc8ffff5522e11139453..323ef8ab3244e880c1b32468a12122990ba0ceba 100644
--- a/arch/i386/kernel/i8259.c
+++ b/arch/i386/kernel/i8259.c
@@ -435,8 +435,4 @@ void __init init_IRQ(void)
 		setup_irq(FPU_IRQ, &fpu_irq);
 
 	irq_ctx_init(smp_processor_id());
-
-#ifdef CONFIG_X86_LOCAL_APIC
-	APIC_init();
-#endif
 }
diff --git a/arch/i386/kernel/io_apic.c b/arch/i386/kernel/io_apic.c
index 5a77c52b20a934d2d9a168ee20a1a965201e1818..cc5d7ac5b2e7dfa5a157bb0dffe57971bc037ed4 100644
--- a/arch/i386/kernel/io_apic.c
+++ b/arch/i386/kernel/io_apic.c
@@ -2387,15 +2387,11 @@ void __init setup_IO_APIC(void)
 	sync_Arb_IDs();
 	setup_IO_APIC_irqs();
 	init_IO_APIC_traps();
+	check_timer();
 	if (!acpi_ioapic)
 		print_IO_APIC();
 }
 
-void __init IO_APIC_late_time_init(void)
-{
-	check_timer();
-}
-
 /*
  *	Called after all the initialization is done. If we didnt find any
  *	APIC bugs then we can allow the modify fast path
diff --git a/arch/i386/kernel/smpboot.c b/arch/i386/kernel/smpboot.c
index 5a2bbe0c4ffff7ffcc5344d3d7015bd6651061d8..01b618e73ecd14ba6f9dedea08a718865715d266 100644
--- a/arch/i386/kernel/smpboot.c
+++ b/arch/i386/kernel/smpboot.c
@@ -1078,16 +1078,6 @@ void *xquad_portio;
 EXPORT_SYMBOL(xquad_portio);
 #endif
 
-/*
- * Fall back to non SMP mode after errors.
- *
- */
-static __init void disable_smp(void)
-{
-	cpu_set(0, cpu_sibling_map[0]);
-	cpu_set(0, cpu_core_map[0]);
-}
-
 static void __init smp_boot_cpus(unsigned int max_cpus)
 {
 	int apicid, cpu, bit, kicked;
@@ -1100,6 +1090,7 @@ static void __init smp_boot_cpus(unsigned int max_cpus)
 	printk("CPU%d: ", 0);
 	print_cpu_info(&cpu_data[0]);
 
+	boot_cpu_physical_apicid = GET_APIC_ID(apic_read(APIC_ID));
 	boot_cpu_logical_apicid = logical_smp_processor_id();
 	x86_cpu_to_apicid[0] = boot_cpu_physical_apicid;
 
@@ -1111,27 +1102,68 @@ static void __init smp_boot_cpus(unsigned int max_cpus)
 	cpus_clear(cpu_core_map[0]);
 	cpu_set(0, cpu_core_map[0]);
 
-	map_cpu_to_logical_apicid();
-
 	/*
 	 * If we couldn't find an SMP configuration at boot time,
 	 * get out of here now!
 	 */
 	if (!smp_found_config && !acpi_lapic) {
 		printk(KERN_NOTICE "SMP motherboard not detected.\n");
-		disable_smp();
+		smpboot_clear_io_apic_irqs();
+		phys_cpu_present_map = physid_mask_of_physid(0);
+		if (APIC_init_uniprocessor())
+			printk(KERN_NOTICE "Local APIC not detected."
+					   " Using dummy APIC emulation.\n");
+		map_cpu_to_logical_apicid();
+		cpu_set(0, cpu_sibling_map[0]);
+		cpu_set(0, cpu_core_map[0]);
+		return;
+	}
+
+	/*
+	 * Should not be necessary because the MP table should list the boot
+	 * CPU too, but we do it for the sake of robustness anyway.
+	 * Makes no sense to do this check in clustered apic mode, so skip it
+	 */
+	if (!check_phys_apicid_present(boot_cpu_physical_apicid)) {
+		printk("weird, boot CPU (#%d) not listed by the BIOS.\n",
+				boot_cpu_physical_apicid);
+		physid_set(hard_smp_processor_id(), phys_cpu_present_map);
+	}
+
+	/*
+	 * If we couldn't find a local APIC, then get out of here now!
+	 */
+	if (APIC_INTEGRATED(apic_version[boot_cpu_physical_apicid]) && !cpu_has_apic) {
+		printk(KERN_ERR "BIOS bug, local APIC #%d not detected!...\n",
+			boot_cpu_physical_apicid);
+		printk(KERN_ERR "... forcing use of dummy APIC emulation. (tell your hw vendor)\n");
+		smpboot_clear_io_apic_irqs();
+		phys_cpu_present_map = physid_mask_of_physid(0);
+		cpu_set(0, cpu_sibling_map[0]);
+		cpu_set(0, cpu_core_map[0]);
 		return;
 	}
 
+	verify_local_APIC();
+
 	/*
 	 * If SMP should be disabled, then really disable it!
 	 */
-	if (!max_cpus || (enable_local_apic < 0)) {
-		printk(KERN_INFO "SMP mode deactivated.\n");
-		disable_smp();
+	if (!max_cpus) {
+		smp_found_config = 0;
+		printk(KERN_INFO "SMP mode deactivated, forcing use of dummy APIC emulation.\n");
+		smpboot_clear_io_apic_irqs();
+		phys_cpu_present_map = physid_mask_of_physid(0);
+		cpu_set(0, cpu_sibling_map[0]);
+		cpu_set(0, cpu_core_map[0]);
 		return;
 	}
 
+	connect_bsp_APIC();
+	setup_local_APIC();
+	map_cpu_to_logical_apicid();
+
+
 	setup_portio_remap();
 
 	/*
@@ -1212,6 +1244,10 @@ static void __init smp_boot_cpus(unsigned int max_cpus)
 	cpu_set(0, cpu_sibling_map[0]);
 	cpu_set(0, cpu_core_map[0]);
 
+	smpboot_setup_io_apic();
+
+	setup_boot_APIC_clock();
+
 	/*
 	 * Synchronize the TSC with the AP
 	 */
diff --git a/arch/i386/kernel/time.c b/arch/i386/kernel/time.c
index 07471bba2dc6a7d10b28a09ef0c2ae119444f797..41c5b2dc6200b0a600a830f42121e2290d5b29d6 100644
--- a/arch/i386/kernel/time.c
+++ b/arch/i386/kernel/time.c
@@ -440,8 +440,8 @@ static int time_init_device(void)
 
 device_initcall(time_init_device);
 
-extern void (*late_time_init)(void);
 #ifdef CONFIG_HPET_TIMER
+extern void (*late_time_init)(void);
 /* Duplicate of time_init() below, with hpet_enable part added */
 static void __init hpet_time_init(void)
 {
@@ -458,11 +458,6 @@ static void __init hpet_time_init(void)
 	printk(KERN_INFO "Using %s for high-res timesource\n",cur_timer->name);
 
 	time_init_hook();
-
-#ifdef CONFIG_X86_LOCAL_APIC
-	if (enable_local_apic >= 0)
-		APIC_late_time_init();
-#endif
 }
 #endif
 
@@ -487,9 +482,4 @@ void __init time_init(void)
 	printk(KERN_INFO "Using %s for high-res timesource\n",cur_timer->name);
 
 	time_init_hook();
-
-#ifdef CONFIG_X86_LOCAL_APIC
-	if (enable_local_apic >= 0)
-		late_time_init = APIC_late_time_init;
-#endif
 }
diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
index 571a68691a4ae3f4ce7d27db795696f2491c575d..4a917748fd9ffac79f863675574ffd2155994858 100644
--- a/drivers/input/keyboard/Kconfig
+++ b/drivers/input/keyboard/Kconfig
@@ -13,11 +13,11 @@ menuconfig INPUT_KEYBOARD
 if INPUT_KEYBOARD
 
 config KEYBOARD_ATKBD
-	tristate "AT keyboard" if !PC
+	tristate "AT keyboard" if !X86_PC
 	default y
 	select SERIO
 	select SERIO_LIBPS2
-	select SERIO_I8042 if PC
+	select SERIO_I8042 if X86_PC
 	select SERIO_GSCPS2 if GSC
 	help
 	  Say Y here if you want to use a standard AT or PS/2 keyboard. Usually
diff --git a/drivers/input/mouse/Kconfig b/drivers/input/mouse/Kconfig
index 537154dd7a873cc8e252bc2cf61f87f01395936e..574b18a523af2df86eaedb9def31a9d629ae1aad 100644
--- a/drivers/input/mouse/Kconfig
+++ b/drivers/input/mouse/Kconfig
@@ -17,7 +17,7 @@ config MOUSE_PS2
 	default y
 	select SERIO
 	select SERIO_LIBPS2
-	select SERIO_I8042 if PC
+	select SERIO_I8042 if X86_PC
 	select SERIO_GSCPS2 if GSC
 	---help---
 	  Say Y here if you have a PS/2 mouse connected to your system. This
diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c
index 00d6a6657ebc3ec78f19d28e25edb2e3354513d4..a440ea38efaa473c11ff379b8564604ca64d669c 100644
--- a/drivers/scsi/ide-scsi.c
+++ b/drivers/scsi/ide-scsi.c
@@ -180,12 +180,22 @@ static void idescsi_input_buffers (ide_drive_t *drive, idescsi_pc_t *pc, unsigne
 			return;
 		}
 		count = min(pc->sg->length - pc->b_count, bcount);
-		buf = kmap_atomic(pc->sg->page, KM_IRQ0);
-		drive->hwif->atapi_input_bytes(drive,
-				buf + pc->b_count + pc->sg->offset, count);
-		kunmap_atomic(buf, KM_IRQ0);
-		bcount -= count;
-		pc->b_count += count;
+		if (PageHighMem(pc->sg->page)) {
+			unsigned long flags;
+
+			local_irq_save(flags);
+			buf = kmap_atomic(pc->sg->page, KM_IRQ0) +
+					pc->sg->offset;
+			drive->hwif->atapi_input_bytes(drive,
+						buf + pc->b_count, count);
+			kunmap_atomic(buf - pc->sg->offset, KM_IRQ0);
+			local_irq_restore(flags);
+		} else {
+			buf = page_address(pc->sg->page) + pc->sg->offset;
+			drive->hwif->atapi_input_bytes(drive,
+						buf + pc->b_count, count);
+		}
+		bcount -= count; pc->b_count += count;
 		if (pc->b_count == pc->sg->length) {
 			pc->sg++;
 			pc->b_count = 0;
@@ -205,12 +215,22 @@ static void idescsi_output_buffers (ide_drive_t *drive, idescsi_pc_t *pc, unsign
 			return;
 		}
 		count = min(pc->sg->length - pc->b_count, bcount);
-		buf = kmap_atomic(pc->sg->page, KM_IRQ0);
-		drive->hwif->atapi_output_bytes(drive,
-				buf + pc->b_count + pc->sg->offset, count);
-		kunmap_atomic(buf, KM_IRQ0);
-		bcount -= count;
-		pc->b_count += count;
+		if (PageHighMem(pc->sg->page)) {
+			unsigned long flags;
+
+			local_irq_save(flags);
+			buf = kmap_atomic(pc->sg->page, KM_IRQ0) +
+						pc->sg->offset;
+			drive->hwif->atapi_output_bytes(drive,
+						buf + pc->b_count, count);
+			kunmap_atomic(buf - pc->sg->offset, KM_IRQ0);
+			local_irq_restore(flags);
+		} else {
+			buf = page_address(pc->sg->page) + pc->sg->offset;
+			drive->hwif->atapi_output_bytes(drive,
+						buf + pc->b_count, count);
+		}
+		bcount -= count; pc->b_count += count;
 		if (pc->b_count == pc->sg->length) {
 			pc->sg++;
 			pc->b_count = 0;
diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c
index b7fd3f644e1e557bb6924987181eced909f28cd7..b1aa350fd32f04d5b59322bfb0ea946c00c25083 100644
--- a/drivers/usb/host/pci-quirks.c
+++ b/drivers/usb/host/pci-quirks.c
@@ -138,11 +138,23 @@ int uhci_check_and_reset_hc(struct pci_dev *pdev, unsigned long base)
 }
 EXPORT_SYMBOL_GPL(uhci_check_and_reset_hc);
 
+static inline int io_type_enabled(struct pci_dev *pdev, unsigned int mask)
+{
+	u16 cmd;
+	return !pci_read_config_word(pdev, PCI_COMMAND, &cmd) && (cmd & mask);
+}
+
+#define pio_enabled(dev) io_type_enabled(dev, PCI_COMMAND_IO)
+#define mmio_enabled(dev) io_type_enabled(dev, PCI_COMMAND_MEMORY)
+
 static void __devinit quirk_usb_handoff_uhci(struct pci_dev *pdev)
 {
 	unsigned long base = 0;
 	int i;
 
+	if (!pio_enabled(pdev))
+		return;
+
 	for (i = 0; i < PCI_ROM_RESOURCE; i++)
 		if ((pci_resource_flags(pdev, i) & IORESOURCE_IO)) {
 			base = pci_resource_start(pdev, i);
@@ -153,12 +165,20 @@ static void __devinit quirk_usb_handoff_uhci(struct pci_dev *pdev)
 		uhci_check_and_reset_hc(pdev, base);
 }
 
+static int __devinit mmio_resource_enabled(struct pci_dev *pdev, int idx)
+{
+	return pci_resource_start(pdev, idx) && mmio_enabled(pdev);
+}
+
 static void __devinit quirk_usb_handoff_ohci(struct pci_dev *pdev)
 {
 	void __iomem *base;
 	int wait_time;
 	u32 control;
 
+	if (!mmio_resource_enabled(pdev, 0))
+		return;
+
 	base = ioremap_nocache(pci_resource_start(pdev, 0),
 				     pci_resource_len(pdev, 0));
 	if (base == NULL) return;
@@ -201,6 +221,9 @@ static void __devinit quirk_usb_disable_ehci(struct pci_dev *pdev)
 	u32 hcc_params, val, temp;
 	u8 cap_length;
 
+	if (!mmio_resource_enabled(pdev, 0))
+		return;
+
 	base = ioremap_nocache(pci_resource_start(pdev, 0),
 				pci_resource_len(pdev, 0));
 	if (base == NULL) return;
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index ffab4783ac644a984b6c0ff7a529b43720e6bc53..c27f8d4098be3cd713b2934f6eefdc8d03bb4a68 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -247,7 +247,7 @@ __writeback_single_inode(struct inode *inode, struct writeback_control *wbc)
 	wait_queue_head_t *wqh;
 
 	if (!atomic_read(&inode->i_count))
-		WARN_ON(!(inode->i_state & I_WILL_FREE));
+		WARN_ON(!(inode->i_state & (I_WILL_FREE|I_FREEING)));
 	else
 		WARN_ON(inode->i_state & I_WILL_FREE);
 
diff --git a/fs/ntfs/file.c b/fs/ntfs/file.c
index cf3e6ced2d01d12256c9bc66c9d5a108ee2765ae..7275338918132fe31eed51bddf2d48485d52c1b9 100644
--- a/fs/ntfs/file.c
+++ b/fs/ntfs/file.c
@@ -668,10 +668,10 @@ static int ntfs_prepare_pages_for_non_resident_write(struct page **pages,
 				 * to, we need to read it in before the write,
 				 * i.e. now.
 				 */
-				if (!buffer_uptodate(bh) && ((bh_pos < pos &&
-						bh_end > pos) ||
-						(bh_end > end &&
-						bh_end > end))) {
+				if (!buffer_uptodate(bh) && bh_pos < end &&
+						bh_end > pos &&
+						(bh_pos < pos ||
+						bh_end > end)) {
 					/*
 					 * If the buffer is fully or partially
 					 * within the initialized size, do an
@@ -784,10 +784,11 @@ static int ntfs_prepare_pages_for_non_resident_write(struct page **pages,
 						blocksize_bits);
 				cdelta = 0;
 				/*
-				 * If the number of remaining clusters in the
-				 * @pages is smaller or equal to the number of
-				 * cached clusters, unlock the runlist as the
-				 * map cache will be used from now on.
+				 * If the number of remaining clusters touched
+				 * by the write is smaller or equal to the
+				 * number of cached clusters, unlock the
+				 * runlist as the map cache will be used from
+				 * now on.
 				 */
 				if (likely(vcn + vcn_len >= cend)) {
 					if (rl_write_locked) {
diff --git a/include/asm-i386/apic.h b/include/asm-i386/apic.h
index a515e2aed829212a76fcd462bb775a9fdc8a13dd..8c454aa58ac6b157441ad2a77f9211e4a30f882e 100644
--- a/include/asm-i386/apic.h
+++ b/include/asm-i386/apic.h
@@ -118,8 +118,7 @@ extern void release_lapic_nmi(void);
 extern void disable_timer_nmi_watchdog(void);
 extern void enable_timer_nmi_watchdog(void);
 extern void nmi_watchdog_tick (struct pt_regs * regs);
-extern int APIC_init(void);
-extern void APIC_late_time_init(void);
+extern int APIC_init_uniprocessor (void);
 extern void disable_APIC_timer(void);
 extern void enable_APIC_timer(void);
 
diff --git a/include/asm-i386/hw_irq.h b/include/asm-i386/hw_irq.h
index 9139b89497a1aa494b63203179360124a1c3c983..622815bf3243e00306774bbea1ab01e2bc2a2f3e 100644
--- a/include/asm-i386/hw_irq.h
+++ b/include/asm-i386/hw_irq.h
@@ -55,7 +55,6 @@ void init_8259A(int aeoi);
 void FASTCALL(send_IPI_self(int vector));
 void init_VISWS_APIC_irqs(void);
 void setup_IO_APIC(void);
-void IO_APIC_late_time_init(void);
 void disable_IO_APIC(void);
 void print_IO_APIC(void);
 int IO_APIC_get_PCI_irq_vector(int bus, int slot, int fn);
diff --git a/include/asm-i386/mach-default/smpboot_hooks.h b/include/asm-i386/mach-default/smpboot_hooks.h
index d7c70c144f9fa16969286257818063329d7bf5cf..7f45f6311059f5d8e3675dbf6d0e759407ad72fb 100644
--- a/include/asm-i386/mach-default/smpboot_hooks.h
+++ b/include/asm-i386/mach-default/smpboot_hooks.h
@@ -1,6 +1,11 @@
 /* two abstractions specific to kernel/smpboot.c, mainly to cater to visws
  * which needs to alter them. */
 
+static inline void smpboot_clear_io_apic_irqs(void)
+{
+	io_apic_irqs = 0;
+}
+
 static inline void smpboot_setup_warm_reset_vector(unsigned long start_eip)
 {
 	CMOS_WRITE(0xa, 0xf);
@@ -27,3 +32,13 @@ static inline void smpboot_restore_warm_reset_vector(void)
 
 	*((volatile long *) phys_to_virt(0x467)) = 0;
 }
+
+static inline void smpboot_setup_io_apic(void)
+{
+	/*
+	 * Here we can be sure that there is an IO-APIC in the system. Let's
+	 * go and set it up:
+	 */
+	if (!skip_ioapic_setup && nr_ioapics)
+		setup_IO_APIC();
+}
diff --git a/include/asm-i386/mach-visws/smpboot_hooks.h b/include/asm-i386/mach-visws/smpboot_hooks.h
index 14d8e0375f7ab5c408a7702944146b4759c5543a..d926471fa3597215d07817defd8866602f0cd7d3 100644
--- a/include/asm-i386/mach-visws/smpboot_hooks.h
+++ b/include/asm-i386/mach-visws/smpboot_hooks.h
@@ -11,7 +11,14 @@ static inline void smpboot_setup_warm_reset_vector(unsigned long start_eip)
 
 /* for visws do nothing for any of these */
 
+static inline void smpboot_clear_io_apic_irqs(void)
+{
+}
+
 static inline void smpboot_restore_warm_reset_vector(void)
 {
 }
 
+static inline void smpboot_setup_io_apic(void)
+{
+}
diff --git a/include/sound/emu10k1.h b/include/sound/emu10k1.h
index 14cb2718cb77f1a0d00865ee8ff09e8456ae4fef..46e3c0bf3c946bc0cead53cfdd8cb12ae9d791c4 100644
--- a/include/sound/emu10k1.h
+++ b/include/sound/emu10k1.h
@@ -1055,6 +1055,7 @@ typedef struct {
 	unsigned char emu10k2_chip; /* Audigy 1 or Audigy 2. */
 	unsigned char ca0102_chip;  /* Audigy 1 or Audigy 2. Not SB Audigy 2 Value. */
 	unsigned char ca0108_chip;  /* Audigy 2 Value */
+	unsigned char ca_cardbus_chip; /* Audigy 2 ZS Notebook */
 	unsigned char ca0151_chip;  /* P16V */
 	unsigned char spk71;        /* Has 7.1 speakers */
 	unsigned char sblive51;	    /* SBLive! 5.1 - extout 0x11 -> center, 0x12 -> lfe */
diff --git a/init/main.c b/init/main.c
index 4075d97e94b184c4d8b95a1e95057e249cf45f21..f142d403534190f4588b3d7eda585112077e0607 100644
--- a/init/main.c
+++ b/init/main.c
@@ -64,6 +64,10 @@
 #endif
 #endif
 
+#ifdef CONFIG_X86_LOCAL_APIC
+#include <asm/smp.h>
+#endif
+
 /*
  * Versions of gcc older than that listed below may actually compile
  * and link okay, but the end product can have subtle run time bugs.
@@ -310,7 +314,14 @@ extern void setup_arch(char **);
 
 #ifndef CONFIG_SMP
 
+#ifdef CONFIG_X86_LOCAL_APIC
+static void __init smp_init(void)
+{
+	APIC_init_uniprocessor();
+}
+#else
 #define smp_init()	do { } while (0)
+#endif
 
 static inline void setup_per_cpu_areas(void) { }
 static inline void smp_prepare_cpus(unsigned int maxcpus) { }
diff --git a/sound/pci/emu10k1/emu10k1_main.c b/sound/pci/emu10k1/emu10k1_main.c
index e9cd8e054f25cea7d7fccdbe5b8a2bfae65dc5dc..53aeff0b783ad059a706c84c134994723f1a614e 100644
--- a/sound/pci/emu10k1/emu10k1_main.c
+++ b/sound/pci/emu10k1/emu10k1_main.c
@@ -579,6 +579,30 @@ static int __devinit snd_emu10k1_ecard_init(emu10k1_t * emu)
 	return 0;
 }
 
+static int __devinit snd_emu10k1_cardbus_init(emu10k1_t * emu)
+{
+	unsigned long special_port;
+	unsigned int value;
+
+	/* Special initialisation routine
+	 * before the rest of the IO-Ports become active.
+	 */
+	special_port = emu->port + 0x38;
+	value = inl(special_port);
+	outl(0x00d00000, special_port);
+	value = inl(special_port);
+	outl(0x00d00001, special_port);
+	value = inl(special_port);
+	outl(0x00d0005f, special_port);
+	value = inl(special_port);
+	outl(0x00d0007f, special_port);
+	value = inl(special_port);
+	outl(0x0090007f, special_port);
+	value = inl(special_port);
+
+	return 0;
+}
+
 /*
  *  Create the EMU10K1 instance
  */
@@ -624,6 +648,16 @@ static emu_chip_details_t emu_chip_details[] = {
 	 .ca0108_chip = 1,
 	 .spk71 = 1,
 	 .ac97_chip = 1} ,
+	/* Audigy 2 ZS Notebook Cardbus card.*/
+	/* Tested by James@superbug.co.uk 30th October 2005 */
+	/* Not working yet, but progressing. */
+	{.vendor = 0x1102, .device = 0x0008, .subsystem = 0x20011102,
+	 .driver = "Audigy2", .name = "Audigy 2 ZS Notebook [SB0530]", 
+	 .id = "Audigy2",
+	 .emu10k2_chip = 1,
+	 .ca0108_chip = 1,
+	 .ca_cardbus_chip = 1,
+	 .spk71 = 1} ,
 	{.vendor = 0x1102, .device = 0x0008, 
 	 .driver = "Audigy2", .name = "Audigy 2 Value [Unknown]", 
 	 .id = "Audigy2",
@@ -1011,6 +1045,11 @@ int __devinit snd_emu10k1_create(snd_card_t * card,
 			snd_emu10k1_free(emu);
 			return err;
 		}
+	} else if (emu->card_capabilities->ca_cardbus_chip) {
+		if ((err = snd_emu10k1_cardbus_init(emu)) < 0) {
+			snd_emu10k1_free(emu);
+			return err;
+		}
 	} else {
 		/* 5.1: Enable the additional AC97 Slots. If the emu10k1 version
 			does not support this, it shouldn't do any harm */