Merge kroah.com:/home/greg/linux/BK/bleed-2.5

into kroah.com:/home/greg/linux/BK/pci-2.5

MAINTAINERS

@@ -1429,10 +1429,10 @@ W:	http://www.ife.ee.ethz.ch/~sailer/linux/pciaudio.html
 S:	Maintained
 
 PCI SUBSYSTEM
-P:	Martin Mares
-M:	mj@ucw.cz
+P:	Greg Kroah-Hartman
+M:	greg@kroah.com
 L:	linux-kernel@vger.kernel.org
-S:	Odd Fixes
+S:	Supported
 
 PCI HOTPLUG CORE
 P:	Greg Kroah-Hartman

arch/i386/pci/common.c

@@ -23,7 +23,24 @@ unsigned int pci_probe = PCI_PROBE_BIOS | PCI_PROBE_CONF1 | PCI_PROBE_CONF2;
 
 int pcibios_last_bus = -1;
 struct pci_bus *pci_root_bus = NULL;
-struct pci_ops *pci_root_ops = NULL;
+struct pci_raw_ops *raw_pci_ops;
+
+static int pci_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *value)
+{
+	return raw_pci_ops->read(0, bus->number, PCI_SLOT(devfn), 
+		PCI_FUNC(devfn), where, size, value);
+}
+
+static int pci_write(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 value)
+{
+	return raw_pci_ops->write(0, bus->number, PCI_SLOT(devfn), 
+		PCI_FUNC(devfn), where, size, value);
+}
+
+struct pci_ops pci_root_ops = {
+	.read = pci_read,
+	.write = pci_write,
+};
 
 /*
  * legacy, numa, and acpi all want to call pcibios_scan_root
@@ -115,7 +132,7 @@ struct pci_bus * __devinit pcibios_scan_root(int busnum)
 
 	printk("PCI: Probing PCI hardware (bus %02x)\n", busnum);
 
-	return pci_scan_bus(busnum, pci_root_ops, NULL);
+	return pci_scan_bus(busnum, &pci_root_ops, NULL);
 }
 
 extern u8 pci_cache_line_size;
@@ -124,7 +141,7 @@ static int __init pcibios_init(void)
 {
 	struct cpuinfo_x86 *c = &boot_cpu_data;
 
-	if (!pci_root_ops) {
+	if (!raw_pci_ops) {
 		printk("PCI: System does not support PCI\n");
 		return 0;
 	}

arch/i386/pci/direct.c

@@ -13,7 +13,7 @@
 #define PCI_CONF1_ADDRESS(bus, dev, fn, reg) \
 	(0x80000000 | (bus << 16) | (dev << 11) | (fn << 8) | (reg & ~3))
 
-static int __pci_conf1_read (int seg, int bus, int dev, int fn, int reg, int len, u32 *value)
+static int pci_conf1_read (int seg, int bus, int dev, int fn, int reg, int len, u32 *value)
 {
 	unsigned long flags;
 
@@ -41,7 +41,7 @@ static int __pci_conf1_read (int seg, int bus, int dev, int fn, int reg, int len
 	return 0;
 }
 
-static int __pci_conf1_write (int seg, int bus, int dev, int fn, int reg, int len, u32 value)
+static int pci_conf1_write (int seg, int bus, int dev, int fn, int reg, int len, u32 value)
 {
 	unsigned long flags;
 
@@ -71,19 +71,7 @@ static int __pci_conf1_write (int seg, int bus, int dev, int fn, int reg, int le
 
 #undef PCI_CONF1_ADDRESS
 
-static int pci_conf1_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *value)
-{
-	return __pci_conf1_read(0, bus->number, PCI_SLOT(devfn), 
-		PCI_FUNC(devfn), where, size, value);
-}
-
-static int pci_conf1_write(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 value)
-{
-	return __pci_conf1_write(0, bus->number, PCI_SLOT(devfn), 
-		PCI_FUNC(devfn), where, size, value);
-}
-
-struct pci_ops pci_direct_conf1 = {
+struct pci_raw_ops pci_direct_conf1 = {
 	.read =		pci_conf1_read,
 	.write =	pci_conf1_write,
 };
@@ -95,7 +83,7 @@ struct pci_ops pci_direct_conf1 = {
 
 #define PCI_CONF2_ADDRESS(dev, reg)	(u16)(0xC000 | (dev << 8) | reg)
 
-static int __pci_conf2_read (int seg, int bus, int dev, int fn, int reg, int len, u32 *value)
+static int pci_conf2_read (int seg, int bus, int dev, int fn, int reg, int len, u32 *value)
 {
 	unsigned long flags;
 
@@ -129,7 +117,7 @@ static int __pci_conf2_read (int seg, int bus, int dev, int fn, int reg, int len
 	return 0;
 }
 
-static int __pci_conf2_write (int seg, int bus, int dev, int fn, int reg, int len, u32 value)
+static int pci_conf2_write (int seg, int bus, int dev, int fn, int reg, int len, u32 value)
 {
 	unsigned long flags;
 
@@ -165,19 +153,7 @@ static int __pci_conf2_write (int seg, int bus, int dev, int fn, int reg, int le
 
 #undef PCI_CONF2_ADDRESS
 
-static int pci_conf2_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *value)
-{
-	return __pci_conf2_read(0, bus->number, PCI_SLOT(devfn), 
-		PCI_FUNC(devfn), where, size, value);
-}
-
-static int pci_conf2_write(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 value)
-{
-	return __pci_conf2_write(0, bus->number, PCI_SLOT(devfn), 
-		PCI_FUNC(devfn), where, size, value);
-}
-
-static struct pci_ops pci_direct_conf2 = {
+static struct pci_raw_ops pci_direct_conf2 = {
 	.read =		pci_conf2_read,
 	.write =	pci_conf2_write,
 };
@@ -193,38 +169,30 @@ static struct pci_ops pci_direct_conf2 = {
  * This should be close to trivial, but it isn't, because there are buggy
  * chipsets (yes, you guessed it, by Intel and Compaq) that have no class ID.
  */
-static int __devinit pci_sanity_check(struct pci_ops *o)
+static int __devinit pci_sanity_check(struct pci_raw_ops *o)
 {
 	u32 x = 0;
-	int retval = 0;
-	struct pci_bus *bus;		/* Fake bus and device */
-	struct pci_dev *dev;
+	int devfn;
 
 	if (pci_probe & PCI_NO_CHECKS)
 		return 1;
 
-	bus = kmalloc(sizeof(*bus), GFP_ATOMIC);
-	dev = kmalloc(sizeof(*dev), GFP_ATOMIC);
-	if (!bus || !dev) {
-		printk(KERN_ERR "Out of memory in %s\n", __FUNCTION__);
-		goto exit;
+	for (devfn = 0; devfn < 0x100; devfn++) {
+		if (o->read(0, 0, PCI_SLOT(devfn), PCI_FUNC(devfn),
+						PCI_CLASS_DEVICE, 2, &x))
+			continue;
+		if (x == PCI_CLASS_BRIDGE_HOST || x == PCI_CLASS_DISPLAY_VGA)
+			return 1;
+
+		if (o->read(0, 0, PCI_SLOT(devfn), PCI_FUNC(devfn),
+						PCI_VENDOR_ID, 2, &x))
+			continue;
+		if (x == PCI_VENDOR_ID_INTEL || x == PCI_VENDOR_ID_COMPAQ)
+			return 1;
 	}
 
-	bus->number = 0;
-	dev->bus = bus;
-	for(dev->devfn=0; dev->devfn < 0x100; dev->devfn++)
-		if ((!o->read(bus, dev->devfn, PCI_CLASS_DEVICE, 2, &x) &&
-		     (x == PCI_CLASS_BRIDGE_HOST || x == PCI_CLASS_DISPLAY_VGA)) ||
-		    (!o->read(bus, dev->devfn, PCI_VENDOR_ID, 2, &x) &&
-		     (x == PCI_VENDOR_ID_INTEL || x == PCI_VENDOR_ID_COMPAQ))) {
-			retval = 1;
-			goto exit;
-		}
 	DBG("PCI: Sanity check failed\n");
-exit:
-	kfree(dev);
-	kfree(bus);
-	return retval;
+	return 0;
 }
 
 static int __init pci_direct_init(void)
@@ -247,9 +215,9 @@ static int __init pci_direct_init(void)
 			local_irq_restore(flags);
 			printk(KERN_INFO "PCI: Using configuration type 1\n");
 			if (!request_region(0xCF8, 8, "PCI conf1"))
-				pci_root_ops = NULL;
+				raw_pci_ops = NULL;
 			else
-				pci_root_ops = &pci_direct_conf1;
+				raw_pci_ops = &pci_direct_conf1;
 			return 0;
 		}
 		outl (tmp, 0xCF8);
@@ -267,9 +235,9 @@ static int __init pci_direct_init(void)
 			local_irq_restore(flags);
 			printk(KERN_INFO "PCI: Using configuration type 2\n");
 			if (!request_region(0xCF8, 4, "PCI conf2"))
-				pci_root_ops = NULL;
+				raw_pci_ops = NULL;
 			else
-				pci_root_ops = &pci_direct_conf2;
+				raw_pci_ops = &pci_direct_conf2;
 			return 0;
 		}
 	}

arch/i386/pci/fixup.c

@@ -23,9 +23,9 @@ static void __devinit pci_fixup_i450nx(struct pci_dev *d)
 		pci_read_config_byte(d, reg++, &subb);
 		DBG("i450NX PXB %d: %02x/%02x/%02x\n", pxb, busno, suba, subb);
 		if (busno)
-			pci_scan_bus(busno, pci_root_ops, NULL);	/* Bus A */
+			pci_scan_bus(busno, &pci_root_ops, NULL);	/* Bus A */
 		if (suba < subb)
-			pci_scan_bus(suba+1, pci_root_ops, NULL);	/* Bus B */
+			pci_scan_bus(suba+1, &pci_root_ops, NULL);	/* Bus B */
 	}
 	pcibios_last_bus = -1;
 }
@@ -39,7 +39,7 @@ static void __devinit pci_fixup_i450gx(struct pci_dev *d)
 	u8 busno;
 	pci_read_config_byte(d, 0x4a, &busno);
 	printk(KERN_INFO "PCI: i440KX/GX host bridge %s: secondary bus %02x\n", d->slot_name, busno);
-	pci_scan_bus(busno, pci_root_ops, NULL);
+	pci_scan_bus(busno, &pci_root_ops, NULL);
 	pcibios_last_bus = -1;
 }
 

arch/i386/pci/irq.c

@@ -107,7 +107,7 @@ static void __init pirq_peer_trick(void)
 		 *  It might be a secondary bus, but in this case its parent is already
 		 *  known (ascending bus order) and therefore pci_scan_bus returns immediately.
 		 */
-		if (busmap[i] && pci_scan_bus(i, pci_root_bus->ops, NULL))
+		if (busmap[i] && pci_scan_bus(i, &pci_root_ops, NULL))
 			printk(KERN_INFO "PCI: Discovered primary peer bus %02x [IRQ]\n", i);
 	pcibios_last_bus = -1;
 }

arch/i386/pci/legacy.c

@@ -31,14 +31,14 @@ static void __devinit pcibios_fixup_peer_bridges(void)
 		if (pci_bus_exists(&pci_root_buses, n))
 			continue;
 		bus->number = n;
-		bus->ops = pci_root_ops;
+		bus->ops = &pci_root_ops;
 		dev->bus = bus;
 		for (dev->devfn=0; dev->devfn<256; dev->devfn += 8)
 			if (!pci_read_config_word(dev, PCI_VENDOR_ID, &l) &&
 			    l != 0x0000 && l != 0xffff) {
 				DBG("Found device at %02x:%02x [%04x]\n", n, dev->devfn, l);
 				printk(KERN_INFO "PCI: Discovered peer bus %02x\n", n);
-				pci_scan_bus(n, pci_root_ops, NULL);
+				pci_scan_bus(n, &pci_root_ops, NULL);
 				break;
 			}
 	}
@@ -49,7 +49,7 @@ static void __devinit pcibios_fixup_peer_bridges(void)
 
 static int __init pci_legacy_init(void)
 {
-	if (!pci_root_ops) {
+	if (!raw_pci_ops) {
 		printk("PCI: System does not support PCI\n");
 		return 0;
 	}

arch/i386/pci/numa.c

@@ -13,7 +13,7 @@
 #define PCI_CONF1_MQ_ADDRESS(bus, dev, fn, reg) \
 	(0x80000000 | (BUS2LOCAL(bus) << 16) | (dev << 11) | (fn << 8) | (reg & ~3))
 
-static int __pci_conf1_mq_read (int seg, int bus, int dev, int fn, int reg, int len, u32 *value)
+static int pci_conf1_mq_read (int seg, int bus, int dev, int fn, int reg, int len, u32 *value)
 {
 	unsigned long flags;
 
@@ -41,7 +41,7 @@ static int __pci_conf1_mq_read (int seg, int bus, int dev, int fn, int reg, int
 	return 0;
 }
 
-static int __pci_conf1_mq_write (int seg, int bus, int dev, int fn, int reg, int len, u32 value)
+static int pci_conf1_mq_write (int seg, int bus, int dev, int fn, int reg, int len, u32 value)
 {
 	unsigned long flags;
 
@@ -71,19 +71,7 @@ static int __pci_conf1_mq_write (int seg, int bus, int dev, int fn, int reg, int
 
 #undef PCI_CONF1_MQ_ADDRESS
 
-static int pci_conf1_mq_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *value)
-{
-	return __pci_conf1_mq_read(0, bus->number, PCI_SLOT(devfn), 
-		PCI_FUNC(devfn), where, size, value);
-}
-
-static int pci_conf1_mq_write(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 value)
-{
-	return __pci_conf1_mq_write(0, bus->number, PCI_SLOT(devfn), 
-		PCI_FUNC(devfn), where, size, value);
-}
-
-static struct pci_ops pci_direct_conf1_mq = {
+static struct pci_raw_ops pci_direct_conf1_mq = {
 	.read	= pci_conf1_mq_read,
 	.write	= pci_conf1_mq_write
 };
@@ -106,9 +94,9 @@ static void __devinit pci_fixup_i450nx(struct pci_dev *d)
 		pci_read_config_byte(d, reg++, &subb);
 		DBG("i450NX PXB %d: %02x/%02x/%02x\n", pxb, busno, suba, subb);
 		if (busno)
-			pci_scan_bus(QUADLOCAL2BUS(quad,busno), pci_root_ops, NULL);	/* Bus A */
+			pci_scan_bus(QUADLOCAL2BUS(quad,busno), &pci_root_ops, NULL);	/* Bus A */
 		if (suba < subb)
-			pci_scan_bus(QUADLOCAL2BUS(quad,suba+1), pci_root_ops, NULL);	/* Bus B */
+			pci_scan_bus(QUADLOCAL2BUS(quad,suba+1), &pci_root_ops, NULL);	/* Bus B */
 	}
 	pcibios_last_bus = -1;
 }
@@ -121,7 +109,7 @@ static int __init pci_numa_init(void)
 {
 	int quad;
 
-	pci_root_ops = &pci_direct_conf1_mq;
+	raw_pci_ops = &pci_direct_conf1_mq;
 
 	if (pcibios_scanned++)
 		return 0;
@@ -132,7 +120,7 @@ static int __init pci_numa_init(void)
 			printk("Scanning PCI bus %d for quad %d\n", 
 				QUADLOCAL2BUS(quad,0), quad);
 			pci_scan_bus(QUADLOCAL2BUS(quad,0), 
-				pci_root_ops, NULL);
+				&pci_root_ops, NULL);
 		}
 	}
 	return 0;

arch/i386/pci/pcbios.c

@@ -172,7 +172,7 @@ static int __devinit pci_bios_find_device (unsigned short vendor, unsigned short
 	return (int) (ret & 0xff00) >> 8;
 }
 
-static int __pci_bios_read (int seg, int bus, int dev, int fn, int reg, int len, u32 *value)
+static int pci_bios_read (int seg, int bus, int dev, int fn, int reg, int len, u32 *value)
 {
 	unsigned long result = 0;
 	unsigned long flags;
@@ -227,7 +227,7 @@ static int __pci_bios_read (int seg, int bus, int dev, int fn, int reg, int len,
 	return (int)((result & 0xff00) >> 8);
 }
 
-static int __pci_bios_write (int seg, int bus, int dev, int fn, int reg, int len, u32 value)
+static int pci_bios_write (int seg, int bus, int dev, int fn, int reg, int len, u32 value)
 {
 	unsigned long result = 0;
 	unsigned long flags;
@@ -282,24 +282,12 @@ static int __pci_bios_write (int seg, int bus, int dev, int fn, int reg, int len
 	return (int)((result & 0xff00) >> 8);
 }
 
-static int pci_bios_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *value)
-{
-	return __pci_bios_read(0, bus->number, PCI_SLOT(devfn), 
-		PCI_FUNC(devfn), where, size, value);
-}
-
-static int pci_bios_write(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 value)
-{
-	return __pci_bios_write(0, bus->number, PCI_SLOT(devfn),
-		PCI_FUNC(devfn), where, size, value);
-}
-
 
 /*
  * Function table for BIOS32 access
  */
 
-static struct pci_ops pci_bios_access = {
+static struct pci_raw_ops pci_bios_access = {
 	.read =		pci_bios_read,
 	.write =	pci_bios_write
 };
@@ -308,7 +296,7 @@ static struct pci_ops pci_bios_access = {
  * Try to find PCI BIOS.
  */
 
-static struct pci_ops * __devinit pci_find_bios(void)
+static struct pci_raw_ops * __devinit pci_find_bios(void)
 {
 	union bios32 *check;
 	unsigned char sum;
@@ -484,7 +472,7 @@ int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq)
 static int __init pci_pcbios_init(void)
 {
 	if ((pci_probe & PCI_PROBE_BIOS) 
-		&& ((pci_root_ops = pci_find_bios()))) {
+		&& ((raw_pci_ops = pci_find_bios()))) {
 		pci_probe |= PCI_BIOS_SORT;
 		pci_bios_present = 1;
 	}

arch/i386/pci/pci.h

@@ -37,7 +37,7 @@ int pcibios_enable_resources(struct pci_dev *, int);
 
 extern int pcibios_last_bus;
 extern struct pci_bus *pci_root_bus;
-extern struct pci_ops *pci_root_ops;
+extern struct pci_ops pci_root_ops;
 
 /* pci-irq.c */
 

arch/ia64/pci/pci.c

@@ -59,7 +59,7 @@ struct pci_fixup pcibios_fixups[1];
 
 
 static int
-__pci_sal_read (int seg, int bus, int dev, int fn, int reg, int len, u32 *value)
+pci_sal_read (int seg, int bus, int dev, int fn, int reg, int len, u32 *value)
 {
 	int result = 0;
 	u64 data = 0;
@@ -75,7 +75,7 @@ __pci_sal_read (int seg, int bus, int dev, int fn, int reg, int len, u32 *value)
 }
 
 static int
-__pci_sal_write (int seg, int bus, int dev, int fn, int reg, int len, u32 value)
+pci_sal_write (int seg, int bus, int dev, int fn, int reg, int len, u32 value)
 {
 	if ((seg > 255) || (bus > 255) || (dev > 31) || (fn > 7) || (reg > 255))
 		return -EINVAL;
@@ -83,28 +83,33 @@ __pci_sal_write (int seg, int bus, int dev, int fn, int reg, int len, u32 value)
 	return ia64_sal_pci_config_write(PCI_SAL_ADDRESS(seg, bus, dev, fn, reg), len, value);
 }
 
+struct pci_raw_ops pci_sal_ops = {
+	.read = 	pci_sal_read,
+	.write =	pci_sal_write
+};
+
+struct pci_raw_ops *raw_pci_ops = &pci_sal_ops;	/* default to SAL */
+
 
 static int
-pci_sal_read (struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *value)
+pci_read (struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *value)
 {
-	return __pci_sal_read(pci_domain_nr(bus), bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn),
-			      where, size, value);
+	return raw_pci_ops->read(pci_domain_nr(bus), bus->number,
+			PCI_SLOT(devfn), PCI_FUNC(devfn), where, size, value);
 }
 
 static int
-pci_sal_write (struct pci_bus *bus, unsigned int devfn, int where, int size, u32 value)
+pci_write (struct pci_bus *bus, unsigned int devfn, int where, int size, u32 value)
 {
-	return __pci_sal_write(pci_domain_nr(bus), bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn),
-			       where, size, value);
+	return raw_pci_ops->write(pci_domain_nr(bus), bus->number,
+			PCI_SLOT(devfn), PCI_FUNC(devfn), where, size, value);
 }
 
-struct pci_ops pci_sal_ops = {
-	.read = 	pci_sal_read,
-	.write =	pci_sal_write
+static struct pci_ops pci_root_ops = {
+	.read = pci_read,
+	.write = pci_write,
 };
 
-struct pci_ops *pci_root_ops = &pci_sal_ops;	/* default to SAL */
-
 static int __init
 pci_acpi_init (void)
 {
@@ -307,7 +312,7 @@ pcibios_scan_root (void *handle, int seg, int bus)
 	info.name = name;
 	acpi_walk_resources(handle, METHOD_NAME__CRS, add_window, &info);
 
-	return scan_root_bus(bus, pci_root_ops, controller);
+	return scan_root_bus(bus, &pci_root_ops, controller);
 
 out3:
 	kfree(controller->window);

drivers/acpi/osl.c

@@ -69,8 +69,6 @@ static int acpi_irq_irq = 0;
 static OSD_HANDLER acpi_irq_handler = NULL;
 static void *acpi_irq_context = NULL;
 
-extern struct pci_ops *pci_root_ops;
-
 acpi_status
 acpi_os_initialize(void)
 {
@@ -79,7 +77,7 @@ acpi_os_initialize(void)
 	 * it while walking the namespace (bus 0 and root bridges w/ _BBNs).
 	 */
 #ifdef CONFIG_ACPI_PCI
-	if (!pci_root_ops) {
+	if (!raw_pci_ops) {
 		printk(KERN_ERR PREFIX "Access to PCI configuration space unavailable\n");
 		return AE_NULL_ENTRY;
 	}
@@ -446,15 +444,9 @@ acpi_os_write_memory(
 #ifdef CONFIG_ACPI_PCI
 
 acpi_status
-acpi_os_read_pci_configuration (
-	struct acpi_pci_id	*pci_id,
-	u32			reg,
-	void			*value,
-	u32			width)
+acpi_os_read_pci_configuration (struct acpi_pci_id *pci_id, u32 reg, void *value, u32 width)
 {
-	int			result = 0;
-	int			size = 0;
-	struct pci_bus		bus;
+	int result, size;
 
 	if (!value)
 		return AE_BAD_PARAMETER;
@@ -470,27 +462,19 @@ acpi_os_read_pci_configuration (
 		size = 4;
 		break;
 	default:
-		BUG();
+		return AE_ERROR;
 	}
 
-	bus.number = pci_id->bus;
-	result = pci_root_ops->read(&bus, PCI_DEVFN(pci_id->device,
-						    pci_id->function),
-				    reg, size, value);
+	result = raw_pci_ops->read(pci_id->segment, pci_id->bus,
+			pci_id->device, pci_id->function, reg, size, value);
 
 	return (result ? AE_ERROR : AE_OK);
 }
 
 acpi_status
-acpi_os_write_pci_configuration (
-	struct acpi_pci_id	*pci_id,
-	u32			reg,
-	acpi_integer		value,
-	u32			width)
+acpi_os_write_pci_configuration (struct acpi_pci_id *pci_id, u32 reg, acpi_integer value, u32 width)
 {
-	int			result = 0;
-	int			size = 0;
-	struct pci_bus		bus;
+	int result, size;
 
 	switch (width) {
 	case 8:
@@ -503,13 +487,12 @@ acpi_os_write_pci_configuration (
 		size = 4;
 		break;
 	default:
-		BUG();
+		return AE_ERROR;
 	}
 
-	bus.number = pci_id->bus;
-	result = pci_root_ops->write(&bus, PCI_DEVFN(pci_id->device,
-						     pci_id->function),
-				     reg, size, value);
+	result = raw_pci_ops->write(pci_id->segment, pci_id->bus,
+			pci_id->device, pci_id->function, reg, size, value);
+
 	return (result ? AE_ERROR : AE_OK);
 }
 

drivers/acpi/pci_root.c

@@ -44,8 +44,6 @@ ACPI_MODULE_NAME		("pci_root")
 #define ACPI_PCI_ROOT_DRIVER_NAME	"ACPI PCI Root Bridge Driver"
 #define ACPI_PCI_ROOT_DEVICE_NAME	"PCI Root Bridge"
 
-extern struct pci_ops *pci_root_ops;
-
 static int acpi_pci_root_add (struct acpi_device *device);
 static int acpi_pci_root_remove (struct acpi_device *device, int type);
 

drivers/pci/bus.c

@@ -93,7 +93,11 @@ void __devinit pci_bus_add_devices(struct pci_bus *bus)
 			continue;
 
 		device_add(&dev->dev);
+
+		spin_lock(&pci_bus_lock);
 		list_add_tail(&dev->global_list, &pci_devices);
+		spin_unlock(&pci_bus_lock);
+
 		pci_proc_attach_device(dev);
 		pci_create_sysfs_dev_files(dev);
 
@@ -108,7 +112,9 @@ void __devinit pci_bus_add_devices(struct pci_bus *bus)
 		 * it and then scan for unattached PCI devices.
 		 */
 		if (dev->subordinate && list_empty(&dev->subordinate->node)) {
+			spin_lock(&pci_bus_lock);
 			list_add_tail(&dev->subordinate->node, &dev->bus->children);
+			spin_unlock(&pci_bus_lock);
 			pci_bus_add_devices(dev->subordinate);
 		}
 	}

drivers/pci/hotplug.c

@@ -173,6 +173,24 @@ int pci_visit_dev (struct pci_visit *fn, struct pci_dev_wrapped *wrapped_dev,
 }
 EXPORT_SYMBOL(pci_visit_dev);
 
+static void pci_destroy_dev(struct pci_dev *dev)
+{
+	pci_proc_detach_device(dev);
+	device_unregister(&dev->dev);
+
+	/* Remove the device from the device lists, and prevent any further
+	 * list accesses from this device */
+	spin_lock(&pci_bus_lock);
+	list_del(&dev->bus_list);
+	list_del(&dev->global_list);
+	dev->bus_list.next = dev->bus_list.prev = NULL;
+	dev->global_list.next = dev->global_list.prev = NULL;
+	spin_unlock(&pci_bus_lock);
+
+	pci_free_resources(dev);
+	pci_dev_put(dev);
+}
+
 /**
  * pci_remove_device_safe - remove an unused hotplug device
  * @dev: the device to remove
@@ -186,11 +204,7 @@ int pci_remove_device_safe(struct pci_dev *dev)
 {
 	if (pci_dev_driver(dev))
 		return -EBUSY;
-	device_unregister(&dev->dev);
-	list_del(&dev->bus_list);
-	list_del(&dev->global_list);
-	pci_free_resources(dev);
-	pci_proc_detach_device(dev);
+	pci_destroy_dev(dev);
 	return 0;
 }
 EXPORT_SYMBOL(pci_remove_device_safe);
@@ -237,17 +251,15 @@ void pci_remove_bus_device(struct pci_dev *dev)
 		pci_remove_behind_bridge(dev);
 		pci_proc_detach_bus(b);
 
+		spin_lock(&pci_bus_lock);
 		list_del(&b->node);
+		spin_unlock(&pci_bus_lock);
+
 		kfree(b);
 		dev->subordinate = NULL;
 	}
 
-	device_unregister(&dev->dev);
-	list_del(&dev->bus_list);
-	list_del(&dev->global_list);
-	pci_free_resources(dev);
-	pci_proc_detach_device(dev);
-	pci_put_dev(dev);
+	pci_destroy_dev(dev);
 }
 
 /**

drivers/pci/pci-driver.c

@@ -138,10 +138,10 @@ static int pci_device_probe(struct device * dev)
 
 	drv = to_pci_driver(dev->driver);
 	pci_dev = to_pci_dev(dev);
-	pci_get_dev(pci_dev);
+	pci_dev_get(pci_dev);
 	error = __pci_device_probe(drv, pci_dev);
 	if (error)
-		pci_put_dev(pci_dev);
+		pci_dev_put(pci_dev);
 
 	return error;
 }
@@ -156,7 +156,7 @@ static int pci_device_remove(struct device * dev)
 			drv->remove(pci_dev);
 		pci_dev->driver = NULL;
 	}
-	pci_put_dev(pci_dev);
+	pci_dev_put(pci_dev);
 	return 0;
 }
 
@@ -448,18 +448,18 @@ static int pci_bus_match(struct device * dev, struct device_driver * drv)
 }
 
 /**
- * pci_get_dev - increments the reference count of the pci device structure
+ * pci_dev_get - increments the reference count of the pci device structure
  * @dev: the device being referenced
  *
  * Each live reference to a device should be refcounted.
  *
  * Drivers for PCI devices should normally record such references in
  * their probe() methods, when they bind to a device, and release
- * them by calling pci_put_dev(), in their disconnect() methods.
+ * them by calling pci_dev_put(), in their disconnect() methods.
  *
  * A pointer to the device with the incremented reference counter is returned.
  */
-struct pci_dev *pci_get_dev (struct pci_dev *dev)
+struct pci_dev *pci_dev_get(struct pci_dev *dev)
 {
 	struct device *tmp;
 
@@ -474,13 +474,13 @@ struct pci_dev *pci_get_dev (struct pci_dev *dev)
 }
 
 /**
- * pci_put_dev - release a use of the pci device structure
+ * pci_dev_put - release a use of the pci device structure
  * @dev: device that's been disconnected
  *
  * Must be called when a user of a device is finished with it.  When the last
  * user of the device calls this function, the memory of the device is freed.
  */
-void pci_put_dev(struct pci_dev *dev)
+void pci_dev_put(struct pci_dev *dev)
 {
 	if (dev)
 		put_device(&dev->dev);
@@ -504,5 +504,5 @@ EXPORT_SYMBOL(pci_register_driver);
 EXPORT_SYMBOL(pci_unregister_driver);
 EXPORT_SYMBOL(pci_dev_driver);
 EXPORT_SYMBOL(pci_bus_type);
-EXPORT_SYMBOL(pci_get_dev);
-EXPORT_SYMBOL(pci_put_dev);
+EXPORT_SYMBOL(pci_dev_get);
+EXPORT_SYMBOL(pci_dev_put);

drivers/pci/pci-sysfs.c

@@ -18,12 +18,6 @@
 
 #include "pci.h"
 
-#if BITS_PER_LONG == 32
-#define LONG_FORMAT "\t%08lx"
-#else
-#define LONG_FORMAT "\t%16lx"
-#endif
-
 /* show configuration fields */
 #define pci_config_attr(field, format_string)				\
 static ssize_t								\
@@ -36,11 +30,11 @@ show_##field (struct device *dev, char *buf)				\
 }									\
 static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL);
 
-pci_config_attr(vendor, "%04x\n");
-pci_config_attr(device, "%04x\n");
-pci_config_attr(subsystem_vendor, "%04x\n");
-pci_config_attr(subsystem_device, "%04x\n");
-pci_config_attr(class, "%06x\n");
+pci_config_attr(vendor, "0x%04x\n");
+pci_config_attr(device, "0x%04x\n");
+pci_config_attr(subsystem_vendor, "0x%04x\n");
+pci_config_attr(subsystem_device, "0x%04x\n");
+pci_config_attr(class, "0x%06x\n");
 pci_config_attr(irq, "%u\n");
 
 /* show resources */
@@ -50,9 +44,13 @@ pci_show_resources(struct device * dev, char * buf)
 	struct pci_dev * pci_dev = to_pci_dev(dev);
 	char * str = buf;
 	int i;
+	int max = 7;
+
+	if (pci_dev->subordinate)
+		max = DEVICE_COUNT_RESOURCE;
 
-	for (i = 0; i < DEVICE_COUNT_RESOURCE && pci_resource_start(pci_dev,i); i++) {
-		str += sprintf(str,LONG_FORMAT LONG_FORMAT LONG_FORMAT "\n",
+	for (i = 0; i < max; i++) {
+		str += sprintf(str,"0x%016lx 0x%016lx 0x%016lx\n",
 			       pci_resource_start(pci_dev,i),
 			       pci_resource_end(pci_dev,i),
 			       pci_resource_flags(pci_dev,i));

drivers/pci/pci.h

@@ -58,3 +58,6 @@ struct pci_visit {
 extern int pci_visit_dev(struct pci_visit *fn,
 			 struct pci_dev_wrapped *wrapped_dev,
 			 struct pci_bus_wrapped *wrapped_parent);
+
+/* Lock for read/write access to pci device and bus lists */
+extern spinlock_t pci_bus_lock;

drivers/pci/probe.c

@@ -524,7 +524,7 @@ pci_scan_device(struct pci_bus *bus, int devfn)
 	}
 	device_initialize(&dev->dev);
 	dev->dev.release = pci_release_dev;
-	pci_get_dev(dev);
+	pci_dev_get(dev);
 
 	pci_name_device(dev);
 

drivers/pci/proc.c

@@ -308,39 +308,45 @@ static struct file_operations proc_bus_pci_operations = {
 /* iterator */
 static void *pci_seq_start(struct seq_file *m, loff_t *pos)
 {
-	struct list_head *p = &pci_devices;
+	struct pci_dev *dev = NULL;
 	loff_t n = *pos;
 
-	/* XXX: surely we need some locking for traversing the list? */
+	dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev);
 	while (n--) {
-		p = p->next;
-		if (p == &pci_devices)
-			return NULL;
+		dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev);
+		if (dev == NULL)
+			goto exit;
 	}
-	return p;
+exit:
+	return dev;
 }
+
 static void *pci_seq_next(struct seq_file *m, void *v, loff_t *pos)
 {
-	struct list_head *p = v;
+	struct pci_dev *dev = v;
+
 	(*pos)++;
-	return p->next != &pci_devices ? (void *)p->next : NULL;
+	dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev);
+	return dev;
 }
+
 static void pci_seq_stop(struct seq_file *m, void *v)
 {
-	/* release whatever locks we need */
+	if (v) {
+		struct pci_dev *dev = v;
+		pci_dev_put(dev);
+	}
 }
 
 static int show_device(struct seq_file *m, void *v)
 {
-	struct list_head *p = v;
-	const struct pci_dev *dev;
+	const struct pci_dev *dev = v;
 	const struct pci_driver *drv;
 	int i;
 
-	if (p == &pci_devices)
+	if (dev == NULL)
 		return 0;
 
-	dev = pci_dev_g(p);
 	drv = pci_dev_driver(dev);
 	seq_printf(m, "%02x%02x\t%04x%04x\t%x",
 			dev->bus->number,
@@ -383,7 +389,11 @@ int pci_proc_attach_device(struct pci_dev *dev)
 		return -EACCES;
 
 	if (!(de = bus->procdir)) {
-		sprintf(name, "%02x", bus->number);
+		if (pci_domain_nr(bus) == 0) {
+			sprintf(name, "%02x", bus->number);
+		} else {
+			sprintf(name, "%04x:%02x", pci_domain_nr(bus), bus->number);
+		}
 		de = bus->procdir = proc_mkdir(name, proc_bus_pci_dir);
 		if (!de)
 			return -ENOMEM;
@@ -451,19 +461,18 @@ int pci_proc_detach_bus(struct pci_bus* bus)
  */
 static int show_dev_config(struct seq_file *m, void *v)
 {
-	struct list_head *p = v;
-	struct pci_dev *dev;
+	struct pci_dev *dev = v;
+	struct pci_dev *first_dev;
 	struct pci_driver *drv;
 	u32 class_rev;
 	unsigned char latency, min_gnt, max_lat, *class;
 	int reg;
 
-	if (p == &pci_devices) {
+	first_dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, NULL);
+	if (dev == first_dev)
 		seq_puts(m, "PCI devices found:\n");
-		return 0;
-	}
+	pci_dev_put(first_dev);
 
-	dev = pci_dev_g(p);
 	drv = pci_dev_driver(dev);
 
 	pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev);

drivers/pci/search.c

+/*
+ * 	PCI searching functions.
+ *
+ *	Copyright 1993 -- 1997 Drew Eckhardt, Frederic Potter,
+ *				David Mosberger-Tang
+ *	Copyright 1997 -- 2000 Martin Mares <mj@ucw.cz>
+ *	Copyright 2003 -- Greg Kroah-Hartman <greg@kroah.com>
+ */
+
 #include <linux/pci.h>
 #include <linux/module.h>
 
+spinlock_t pci_bus_lock = SPIN_LOCK_UNLOCKED;
+
 static struct pci_bus *
 pci_do_find_bus(struct pci_bus* bus, unsigned char busnr)
 {
@@ -52,11 +63,15 @@ pci_find_bus(unsigned char busnr)
 struct pci_bus * 
 pci_find_next_bus(const struct pci_bus *from)
 {
-	struct list_head *n = from ? from->node.next : pci_root_buses.next;
+	struct list_head *n;
 	struct pci_bus *b = NULL;
 
+	WARN_ON(irqs_disabled());
+	spin_lock(&pci_bus_lock);
+	n = from ? from->node.next : pci_root_buses.next;
 	if (n != &pci_root_buses)
 		b = pci_bus_b(n);
+	spin_unlock(&pci_bus_lock);
 	return b;
 }
 
@@ -97,24 +112,36 @@ pci_find_slot(unsigned int bus, unsigned int devfn)
  * device structure is returned.  Otherwise, %NULL is returned.
  * A new search is initiated by passing %NULL to the @from argument.
  * Otherwise if @from is not %NULL, searches continue from next device on the global list.
+ *
+ * NOTE: Do not use this function anymore, use pci_get_subsys() instead, as
+ * the pci device returned by this function can disappear at any moment in
+ * time.
  */
 struct pci_dev *
 pci_find_subsys(unsigned int vendor, unsigned int device,
 		unsigned int ss_vendor, unsigned int ss_device,
 		const struct pci_dev *from)
 {
-	struct list_head *n = from ? from->global_list.next : pci_devices.next;
+	struct list_head *n;
+	struct pci_dev *dev;
+
+	WARN_ON(irqs_disabled());
+	spin_lock(&pci_bus_lock);
+	n = from ? from->global_list.next : pci_devices.next;
 
-	while (n != &pci_devices) {
-		struct pci_dev *dev = pci_dev_g(n);
+	while (n && (n != &pci_devices)) {
+		dev = pci_dev_g(n);
 		if ((vendor == PCI_ANY_ID || dev->vendor == vendor) &&
 		    (device == PCI_ANY_ID || dev->device == device) &&
 		    (ss_vendor == PCI_ANY_ID || dev->subsystem_vendor == ss_vendor) &&
 		    (ss_device == PCI_ANY_ID || dev->subsystem_device == ss_device))
-			return dev;
+			goto exit;
 		n = n->next;
 	}
-	return NULL;
+	dev = NULL;
+exit:
+	spin_unlock(&pci_bus_lock);
+	return dev;
 }
 
 /**
@@ -128,6 +155,10 @@ pci_find_subsys(unsigned int vendor, unsigned int device,
  * returned.  Otherwise, %NULL is returned.
  * A new search is initiated by passing %NULL to the @from argument.
  * Otherwise if @from is not %NULL, searches continue from next device on the global list.
+ * 
+ * NOTE: Do not use this function anymore, use pci_get_device() instead, as
+ * the pci device returned by this function can disappear at any moment in
+ * time.
  */
 struct pci_dev *
 pci_find_device(unsigned int vendor, unsigned int device, const struct pci_dev *from)
@@ -135,6 +166,77 @@ pci_find_device(unsigned int vendor, unsigned int device, const struct pci_dev *
 	return pci_find_subsys(vendor, device, PCI_ANY_ID, PCI_ANY_ID, from);
 }
 
+/**
+ * pci_get_subsys - begin or continue searching for a PCI device by vendor/subvendor/device/subdevice id
+ * @vendor: PCI vendor id to match, or %PCI_ANY_ID to match all vendor ids
+ * @device: PCI device id to match, or %PCI_ANY_ID to match all device ids
+ * @ss_vendor: PCI subsystem vendor id to match, or %PCI_ANY_ID to match all vendor ids
+ * @ss_device: PCI subsystem device id to match, or %PCI_ANY_ID to match all device ids
+ * @from: Previous PCI device found in search, or %NULL for new search.
+ *
+ * Iterates through the list of known PCI devices.  If a PCI device is
+ * found with a matching @vendor, @device, @ss_vendor and @ss_device, a pointer to its
+ * device structure is returned, and the reference count to the device is
+ * incremented.  Otherwise, %NULL is returned.  A new search is initiated by
+ * passing %NULL to the @from argument.  Otherwise if @from is not %NULL,
+ * searches continue from next device on the global list.
+ * The reference count for @from is always decremented if it is not %NULL.
+ */
+struct pci_dev * 
+pci_get_subsys(unsigned int vendor, unsigned int device,
+	       unsigned int ss_vendor, unsigned int ss_device,
+	       struct pci_dev *from)
+{
+	struct list_head *n;
+	struct pci_dev *dev;
+
+	WARN_ON(irqs_disabled());
+	spin_lock(&pci_bus_lock);
+	n = from ? from->global_list.next : pci_devices.next;
+
+	while (n && (n != &pci_devices)) {
+		dev = pci_dev_g(n);
+		if ((vendor == PCI_ANY_ID || dev->vendor == vendor) &&
+		    (device == PCI_ANY_ID || dev->device == device) &&
+		    (ss_vendor == PCI_ANY_ID || dev->subsystem_vendor == ss_vendor) &&
+		    (ss_device == PCI_ANY_ID || dev->subsystem_device == ss_device))
+			goto exit;
+		n = n->next;
+	}
+	dev = NULL;
+exit:
+	pci_dev_put(from);
+	dev = pci_dev_get(dev);
+	spin_unlock(&pci_bus_lock);
+	return dev;
+}
+
+/**
+ * pci_get_device - begin or continue searching for a PCI device by vendor/device id
+ * @vendor: PCI vendor id to match, or %PCI_ANY_ID to match all vendor ids
+ * @device: PCI device id to match, or %PCI_ANY_ID to match all device ids
+ * @from: Previous PCI device found in search, or %NULL for new search.
+ *
+ * Iterates through the list of known PCI devices.  If a PCI device is
+ * found with a matching @vendor and @device, a pointer to its device structure is
+ * returned.  Otherwise, %NULL is returned.
+ * A new search is initiated by passing %NULL to the @from argument.
+ * Otherwise if @from is not %NULL, searches continue from next device on the global list.
+ *
+ * Iterates through the list of known PCI devices.  If a PCI device is
+ * found with a matching @vendor and @device, the reference count to the
+ * device is incremented and a pointer to its device structure is returned.
+ * Otherwise, %NULL is returned.  A new search is initiated by passing %NULL
+ * to the @from argument.  Otherwise if @from is not %NULL, searches continue
+ * from next device on the global list.  The reference count for @from is
+ * always decremented if it is not %NULL.
+ */
+struct pci_dev *
+pci_get_device(unsigned int vendor, unsigned int device, struct pci_dev *from)
+{
+	return pci_get_subsys(vendor, device, PCI_ANY_ID, PCI_ANY_ID, from);
+}
+
 
 /**
  * pci_find_device_reverse - begin or continue searching for a PCI device by vendor/device id
@@ -151,16 +253,24 @@ pci_find_device(unsigned int vendor, unsigned int device, const struct pci_dev *
 struct pci_dev *
 pci_find_device_reverse(unsigned int vendor, unsigned int device, const struct pci_dev *from)
 {
-	struct list_head *n = from ? from->global_list.prev : pci_devices.prev;
+	struct list_head *n;
+	struct pci_dev *dev;
 
-	while (n != &pci_devices) {
-		struct pci_dev *dev = pci_dev_g(n);
+	WARN_ON(irqs_disabled());
+	spin_lock(&pci_bus_lock);
+	n = from ? from->global_list.prev : pci_devices.prev;
+
+	while (n && (n != &pci_devices)) {
+		dev = pci_dev_g(n);
 		if ((vendor == PCI_ANY_ID || dev->vendor == vendor) &&
 		    (device == PCI_ANY_ID || dev->device == device))
-			return dev;
+			goto exit;
 		n = n->prev;
 	}
-	return NULL;
+	dev = NULL;
+exit:
+	spin_unlock(&pci_bus_lock);
+	return dev;
 }
 
 
@@ -179,15 +289,22 @@ pci_find_device_reverse(unsigned int vendor, unsigned int device, const struct p
 struct pci_dev *
 pci_find_class(unsigned int class, const struct pci_dev *from)
 {
-	struct list_head *n = from ? from->global_list.next : pci_devices.next;
+	struct list_head *n;
+	struct pci_dev *dev;
 
-	while (n != &pci_devices) {
-		struct pci_dev *dev = pci_dev_g(n);
+	spin_lock(&pci_bus_lock);
+	n = from ? from->global_list.next : pci_devices.next;
+
+	while (n && (n != &pci_devices)) {
+		dev = pci_dev_g(n);
 		if (dev->class == class)
-			return dev;
+			goto exit;
 		n = n->next;
 	}
-	return NULL;
+	dev = NULL;
+exit:
+	spin_unlock(&pci_bus_lock);
+	return dev;
 }
 
 EXPORT_SYMBOL(pci_find_bus);
@@ -196,3 +313,5 @@ EXPORT_SYMBOL(pci_find_device);
 EXPORT_SYMBOL(pci_find_device_reverse);
 EXPORT_SYMBOL(pci_find_slot);
 EXPORT_SYMBOL(pci_find_subsys);
+EXPORT_SYMBOL(pci_get_device);
+EXPORT_SYMBOL(pci_get_subsys);

include/linux/pci.h

@@ -486,6 +486,13 @@ struct pci_ops {
 	int (*write)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val);
 };
 
+struct pci_raw_ops {
+	int (*read)(int dom, int bus, int dev, int func, int reg, int len, u32 *val);
+	int (*write)(int dom, int bus, int dev, int func, int reg, int len, u32 val);
+};
+
+extern struct pci_raw_ops *raw_pci_ops;
+
 struct pci_bus_region {
 	unsigned long start;
 	unsigned long end;
@@ -549,8 +556,8 @@ char *pci_class_name(u32 class);
 void pci_read_bridge_bases(struct pci_bus *child);
 struct resource *pci_find_parent_resource(const struct pci_dev *dev, struct resource *res);
 int pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge);
-extern struct pci_dev *pci_get_dev(struct pci_dev *dev);
-extern void pci_put_dev(struct pci_dev *dev);
+extern struct pci_dev *pci_dev_get(struct pci_dev *dev);
+extern void pci_dev_put(struct pci_dev *dev);
 
 extern void pci_remove_bus_device(struct pci_dev *dev);
 
@@ -566,6 +573,10 @@ struct pci_dev *pci_find_slot (unsigned int bus, unsigned int devfn);
 int pci_find_capability (struct pci_dev *dev, int cap);
 struct pci_bus * pci_find_next_bus(const struct pci_bus *from);
 
+struct pci_dev *pci_get_device (unsigned int vendor, unsigned int device, struct pci_dev *from);
+struct pci_dev *pci_get_subsys (unsigned int vendor, unsigned int device,
+				unsigned int ss_vendor, unsigned int ss_device,
+				struct pci_dev *from);
 int pci_bus_read_config_byte (struct pci_bus *bus, unsigned int devfn, int where, u8 *val);
 int pci_bus_read_config_word (struct pci_bus *bus, unsigned int devfn, int where, u16 *val);
 int pci_bus_read_config_dword (struct pci_bus *bus, unsigned int devfn, int where, u32 *val);
@@ -688,6 +699,13 @@ static inline struct pci_dev *pci_find_subsys(unsigned int vendor, unsigned int
 unsigned int ss_vendor, unsigned int ss_device, const struct pci_dev *from)
 { return NULL; }
 
+static inline struct pci_dev *pci_get_device (unsigned int vendor, unsigned int device, struct pci_dev *from)
+{ return NULL; }
+
+static inline struct pci_dev *pci_get_subsys (unsigned int vendor, unsigned int device,
+unsigned int ss_vendor, unsigned int ss_device, struct pci_dev *from)
+{ return NULL; }
+
 static inline void pci_set_master(struct pci_dev *dev) { }
 static inline int pci_enable_device(struct pci_dev *dev) { return -EIO; }
 static inline void pci_disable_device(struct pci_dev *dev) { }
@@ -743,6 +761,15 @@ static inline int pci_module_init(struct pci_driver *drv)
 	return rc;
 }
 
+/*
+ * PCI domain support.  Sometimes called PCI segment (eg by ACPI),
+ * a PCI domain is defined to be a set of PCI busses which share
+ * configuration space.
+ */
+#ifndef CONFIG_PCI_DOMAINS
+static inline int pci_domain_nr(struct pci_bus *bus) { return 0; }
+#endif
+
 #endif /* !CONFIG_PCI */
 
 /* these helpers provide future and backwards compatibility
@@ -800,15 +827,5 @@ extern int pci_pci_problems;
 #define PCIPCI_VSFX		16
 #define PCIPCI_ALIMAGIK		32
 
-/*
- * PCI domain support.  Sometimes called PCI segment (eg by ACPI),
- * a PCI domain is defined to be a set of PCI busses which share
- * configuration space.
- */
-
-#ifndef CONFIG_PCI_DOMAINS
-static inline int pci_domain_nr(struct pci_bus *bus) { return 0; }
-#endif
-
 #endif /* __KERNEL__ */
 #endif /* LINUX_PCI_H */