Merge tag 'pci-v3.14-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:
 "PCI changes for the v3.14 merge window:

  Resource management
    - Change pci_bus_region addresses to dma_addr_t (Bjorn Helgaas)
    - Support 64-bit AGP BARs (Bjorn Helgaas, Yinghai Lu)
    - Add pci_bus_address() to get bus address of a BAR (Bjorn Helgaas)
    - Use pci_resource_start() for CPU address of AGP BARs (Bjorn Helgaas)
    - Enforce bus address limits in resource allocation (Yinghai Lu)
    - Allocate 64-bit BARs above 4G when possible (Yinghai Lu)
    - Convert pcibios_resource_to_bus() to take pci_bus, not pci_dev (Yinghai Lu)

  PCI device hotplug
    - Major rescan/remove locking update (Rafael J. Wysocki)
    - Make ioapic builtin only (not modular) (Yinghai Lu)
    - Fix release/free issues (Yinghai Lu)
    - Clean up pciehp (Bjorn Helgaas)
    - Announce pciehp slot info during enumeration (Bjorn Helgaas)

  MSI
    - Add pci_msi_vec_count(), pci_msix_vec_count() (Alexander Gordeev)
    - Add pci_enable_msi_range(), pci_enable_msix_range() (Alexander Gordeev)
    - Deprecate "tri-state" interfaces: fail/success/fail+info (Alexander Gordeev)
    - Export MSI mode using attributes, not kobjects (Greg Kroah-Hartman)
    - Drop "irq" param from *_restore_msi_irqs() (DuanZhenzhong)

  SR-IOV
    - Clear NumVFs when disabling SR-IOV in sriov_init() (ethan.zhao)

  Virtualization
    - Add support for save/restore of extended capabilities (Alex Williamson)
    - Add Virtual Channel to save/restore support (Alex Williamson)
    - Never treat a VF as a multifunction device (Alex Williamson)
    - Add pci_try_reset_function(), et al (Alex Williamson)

  AER
    - Ignore non-PCIe error sources (Betty Dall)
    - Support ACPI HEST error sources for domains other than 0 (Betty Dall)
    - Consolidate HEST error source parsers (Bjorn Helgaas)
    - Add a TLP header print helper (Borislav Petkov)

  Freescale i.MX6
    - Remove unnecessary code (Fabio Estevam)
    - Make reset-gpio optional (Marek Vasut)
    - Report "link up" only after link training completes (Marek Vasut)
    - Start link in Gen1 before negotiating for Gen2 mode (Marek Vasut)
    - Fix PCIe startup code (Richard Zhu)

  Marvell MVEBU
    - Remove duplicate of_clk_get_by_name() call (Andrew Lunn)
    - Drop writes to bridge Secondary Status register (Jason Gunthorpe)
    - Obey bridge PCI_COMMAND_MEM and PCI_COMMAND_IO bits (Jason Gunthorpe)
    - Support a bridge with no IO port window (Jason Gunthorpe)
    - Use max_t() instead of max(resource_size_t,) (Jingoo Han)
    - Remove redundant of_match_ptr (Sachin Kamat)
    - Call pci_ioremap_io() at startup instead of dynamically (Thomas Petazzoni)

  NVIDIA Tegra
    - Disable Gen2 for Tegra20 and Tegra30 (Eric Brower)

  Renesas R-Car
    - Add runtime PM support (Valentine Barshak)
    - Fix rcar_pci_probe() return value check (Wei Yongjun)

  Synopsys DesignWare
    - Fix crash in dw_msi_teardown_irq() (Bjørn Erik Nilsen)
    - Remove redundant call to pci_write_config_word() (Bjørn Erik Nilsen)
    - Fix missing MSI IRQs (Harro Haan)
    - Add dw_pcie prefix before cfg_read/write (Pratyush Anand)
    - Fix I/O transfers by using CPU (not realio) address (Pratyush Anand)
    - Whitespace cleanup (Jingoo Han)

  EISA
    - Call put_device() if device_register() fails (Levente Kurusa)
    - Revert EISA initialization breakage ((Bjorn Helgaas)

  Miscellaneous
    - Remove unused code, including PCIe 3.0 interfaces (Stephen Hemminger)
    - Prevent bus conflicts while checking for bridge apertures (Bjorn Helgaas)
    - Stop clearing bridge Secondary Status when setting up I/O aperture (Bjorn Helgaas)
    - Use dev_is_pci() to identify PCI devices (Yijing Wang)
    - Deprecate DEFINE_PCI_DEVICE_TABLE (Joe Perches)
    - Update documentation 00-INDEX (Erik Ekman)"

* tag 'pci-v3.14-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (119 commits)
  Revert "EISA: Initialize device before its resources"
  Revert "EISA: Log device resources in dmesg"
  vfio-pci: Use pci "try" reset interface
  PCI: Check parent kobject in pci_destroy_dev()
  xen/pcifront: Use global PCI rescan-remove locking
  powerpc/eeh: Use global PCI rescan-remove locking
  PCI: Fix pci_check_and_unmask_intx() comment typos
  PCI: Add pci_try_reset_function(), pci_try_reset_slot(), pci_try_reset_bus()
  MPT / PCI: Use pci_stop_and_remove_bus_device_locked()
  platform / x86: Use global PCI rescan-remove locking
  PCI: hotplug: Use global PCI rescan-remove locking
  pcmcia: Use global PCI rescan-remove locking
  ACPI / hotplug / PCI: Use global PCI rescan-remove locking
  ACPI / PCI: Use global PCI rescan-remove locking in PCI root hotplug
  PCI: Add global pci_lock_rescan_remove()
  PCI: Cleanup pci.h whitespace
  PCI: Reorder so actual code comes before stubs
  PCI/AER: Support ACPI HEST AER error sources for PCI domains other than 0
  ACPICA: Add helper macros to extract bus/segment numbers from HEST table.
  PCI: Make local functions static
  ...

17 files changed, 57 insertions, 59 deletions

diff --git a/arch/alpha/kernel/pci-sysfs.c b/arch/alpha/kernel/pci-sysfs.c
index 2b183b0d3207..99e8d4796c96 100644
--- a/arch/alpha/kernel/pci-sysfs.c
+++ b/arch/alpha/kernel/pci-sysfs.c
@@ -83,7 +83,7 @@ static int pci_mmap_resource(struct kobject *kobj,
         if (iomem_is_exclusive(res->start))
                 return -EINVAL;
 
-        pcibios_resource_to_bus(pdev, &bar, res);
+        pcibios_resource_to_bus(pdev->bus, &bar, res);
         vma->vm_pgoff += bar.start >> (PAGE_SHIFT - (sparse ? 5 : 0));
         mmap_type = res->flags & IORESOURCE_MEM ? pci_mmap_mem : pci_mmap_io;
 
@@ -139,7 +139,7 @@ static int sparse_mem_mmap_fits(struct pci_dev *pdev, int num)
         long dense_offset;
         unsigned long sparse_size;
 
-        pcibios_resource_to_bus(pdev, &bar, &pdev->resource[num]);
+        pcibios_resource_to_bus(pdev->bus, &bar, &pdev->resource[num]);
 
         /* All core logic chips have 4G sparse address space, except
            CIA which has 16G (see xxx_SPARSE_MEM and xxx_DENSE_MEM
diff --git a/arch/alpha/kernel/pci_iommu.c b/arch/alpha/kernel/pci_iommu.c
index a21d0ab3b19e..eddee7720343 100644
--- a/arch/alpha/kernel/pci_iommu.c
+++ b/arch/alpha/kernel/pci_iommu.c
@@ -325,7 +325,7 @@ pci_map_single_1(struct pci_dev *pdev, void *cpu_addr, size_t size,
 /* Helper for generic DMA-mapping functions. */
 static struct pci_dev *alpha_gendev_to_pci(struct device *dev)
 {
-        if (dev && dev->bus == &pci_bus_type)
+        if (dev && dev_is_pci(dev))
                 return to_pci_dev(dev);
 
         /* Assume that non-PCI devices asking for DMA are either ISA or EISA,
diff --git a/arch/arm/common/it8152.c b/arch/arm/common/it8152.c
index 001f4913799c..5114b68e99d5 100644
--- a/arch/arm/common/it8152.c
+++ b/arch/arm/common/it8152.c
@@ -257,7 +257,7 @@ static int it8152_needs_bounce(struct device *dev, dma_addr_t dma_addr, size_t s
  */
 static int it8152_pci_platform_notify(struct device *dev)
 {
-        if (dev->bus == &pci_bus_type) {
+        if (dev_is_pci(dev)) {
                 if (dev->dma_mask)
                         *dev->dma_mask = (SZ_64M - 1) | PHYS_OFFSET;
                 dev->coherent_dma_mask = (SZ_64M - 1) | PHYS_OFFSET;
@@ -268,7 +268,7 @@ static int it8152_pci_platform_notify(struct device *dev)
 
 static int it8152_pci_platform_notify_remove(struct device *dev)
 {
-        if (dev->bus == &pci_bus_type)
+        if (dev_is_pci(dev))
                 dmabounce_unregister_dev(dev);
 
         return 0;
diff --git a/arch/arm/mach-ixp4xx/common-pci.c b/arch/arm/mach-ixp4xx/common-pci.c
index 6d6bde3e15fa..200970d56f6d 100644
--- a/arch/arm/mach-ixp4xx/common-pci.c
+++ b/arch/arm/mach-ixp4xx/common-pci.c
@@ -326,7 +326,7 @@ static int ixp4xx_needs_bounce(struct device *dev, dma_addr_t dma_addr, size_t s
  */
 static int ixp4xx_pci_platform_notify(struct device *dev)
 {
-        if(dev->bus == &pci_bus_type) {
+        if (dev_is_pci(dev)) {
                 *dev->dma_mask =  SZ_64M - 1;
                 dev->coherent_dma_mask = SZ_64M - 1;
                 dmabounce_register_dev(dev, 2048, 4096, ixp4xx_needs_bounce);
@@ -336,9 +336,9 @@ static int ixp4xx_pci_platform_notify(struct device *dev)
 
 static int ixp4xx_pci_platform_notify_remove(struct device *dev)
 {
-        if(dev->bus == &pci_bus_type) {
+        if (dev_is_pci(dev))
                 dmabounce_unregister_dev(dev);
-        }
+
         return 0;
 }
 
diff --git a/arch/ia64/hp/common/sba_iommu.c b/arch/ia64/hp/common/sba_iommu.c
index 4c530a82fc46..8e858b593e4f 100644
--- a/arch/ia64/hp/common/sba_iommu.c
+++ b/arch/ia64/hp/common/sba_iommu.c
@@ -255,7 +255,7 @@ static u64 prefetch_spill_page;
 #endif
 
 #ifdef CONFIG_PCI
-# define GET_IOC(dev)   (((dev)->bus == &pci_bus_type)                                          \
+# define GET_IOC(dev)   ((dev_is_pci(dev))                                              \
                          ? ((struct ioc *) PCI_CONTROLLER(to_pci_dev(dev))->iommu) : NULL)
 #else
 # define GET_IOC(dev)   NULL
diff --git a/arch/ia64/sn/pci/pci_dma.c b/arch/ia64/sn/pci/pci_dma.c
index 3290d6e00c31..d0853e8e8623 100644
--- a/arch/ia64/sn/pci/pci_dma.c
+++ b/arch/ia64/sn/pci/pci_dma.c
@@ -34,7 +34,7 @@
  */
 static int sn_dma_supported(struct device *dev, u64 mask)
 {
-        BUG_ON(dev->bus != &pci_bus_type);
+        BUG_ON(!dev_is_pci(dev));
 
         if (mask < 0x7fffffff)
                 return 0;
@@ -50,7 +50,7 @@ static int sn_dma_supported(struct device *dev, u64 mask)
  */
 int sn_dma_set_mask(struct device *dev, u64 dma_mask)
 {
-        BUG_ON(dev->bus != &pci_bus_type);
+        BUG_ON(!dev_is_pci(dev));
 
         if (!sn_dma_supported(dev, dma_mask))
                 return 0;
@@ -85,7 +85,7 @@ static void *sn_dma_alloc_coherent(struct device *dev, size_t size,
         struct pci_dev *pdev = to_pci_dev(dev);
         struct sn_pcibus_provider *provider = SN_PCIDEV_BUSPROVIDER(pdev);
 
-        BUG_ON(dev->bus != &pci_bus_type);
+        BUG_ON(!dev_is_pci(dev));
 
         /*
          * Allocate the memory.
@@ -143,7 +143,7 @@ static void sn_dma_free_coherent(struct device *dev, size_t size, void *cpu_addr
         struct pci_dev *pdev = to_pci_dev(dev);
         struct sn_pcibus_provider *provider = SN_PCIDEV_BUSPROVIDER(pdev);
 
-        BUG_ON(dev->bus != &pci_bus_type);
+        BUG_ON(!dev_is_pci(dev));
 
         provider->dma_unmap(pdev, dma_handle, 0);
         free_pages((unsigned long)cpu_addr, get_order(size));
@@ -187,7 +187,7 @@ static dma_addr_t sn_dma_map_page(struct device *dev, struct page *page,
 
         dmabarr = dma_get_attr(DMA_ATTR_WRITE_BARRIER, attrs);
 
-        BUG_ON(dev->bus != &pci_bus_type);
+        BUG_ON(!dev_is_pci(dev));
 
         phys_addr = __pa(cpu_addr);
         if (dmabarr)
@@ -223,7 +223,7 @@ static void sn_dma_unmap_page(struct device *dev, dma_addr_t dma_addr,
         struct pci_dev *pdev = to_pci_dev(dev);
         struct sn_pcibus_provider *provider = SN_PCIDEV_BUSPROVIDER(pdev);
 
-        BUG_ON(dev->bus != &pci_bus_type);
+        BUG_ON(!dev_is_pci(dev));
 
         provider->dma_unmap(pdev, dma_addr, dir);
 }
@@ -247,7 +247,7 @@ static void sn_dma_unmap_sg(struct device *dev, struct scatterlist *sgl,
         struct sn_pcibus_provider *provider = SN_PCIDEV_BUSPROVIDER(pdev);
         struct scatterlist *sg;
 
-        BUG_ON(dev->bus != &pci_bus_type);
+        BUG_ON(!dev_is_pci(dev));
 
         for_each_sg(sgl, sg, nhwentries, i) {
                 provider->dma_unmap(pdev, sg->dma_address, dir);
@@ -284,7 +284,7 @@ static int sn_dma_map_sg(struct device *dev, struct scatterlist *sgl,
 
         dmabarr = dma_get_attr(DMA_ATTR_WRITE_BARRIER, attrs);
 
-        BUG_ON(dev->bus != &pci_bus_type);
+        BUG_ON(!dev_is_pci(dev));
 
         /*
          * Setup a DMA address for each entry in the scatterlist.
@@ -323,26 +323,26 @@ static int sn_dma_map_sg(struct device *dev, struct scatterlist *sgl,
 static void sn_dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle,
                                        size_t size, enum dma_data_direction dir)
 {
-        BUG_ON(dev->bus != &pci_bus_type);
+        BUG_ON(!dev_is_pci(dev));
 }
 
 static void sn_dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle,
                                           size_t size,
                                           enum dma_data_direction dir)
 {
-        BUG_ON(dev->bus != &pci_bus_type);
+        BUG_ON(!dev_is_pci(dev));
 }
 
 static void sn_dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
                                    int nelems, enum dma_data_direction dir)
 {
-        BUG_ON(dev->bus != &pci_bus_type);
+        BUG_ON(!dev_is_pci(dev));
 }
 
 static void sn_dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
                                       int nelems, enum dma_data_direction dir)
 {
-        BUG_ON(dev->bus != &pci_bus_type);
+        BUG_ON(!dev_is_pci(dev));
 }
 
 static int sn_dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
diff --git a/arch/parisc/kernel/drivers.c b/arch/parisc/kernel/drivers.c
index 14285caec71a..dba508fe1683 100644
--- a/arch/parisc/kernel/drivers.c
+++ b/arch/parisc/kernel/drivers.c
@@ -282,18 +282,6 @@ find_pa_parent_type(const struct parisc_device *padev, int type)
         return NULL;
 }
 
-#ifdef CONFIG_PCI
-static inline int is_pci_dev(struct device *dev)
-{
-        return dev->bus == &pci_bus_type;
-}
-#else
-static inline int is_pci_dev(struct device *dev)
-{
-        return 0;
-}
-#endif
-
 /*
  * get_node_path fills in @path with the firmware path to the device.
  * Note that if @node is a parisc device, we don't fill in the 'mod' field.
@@ -306,7 +294,7 @@ static void get_node_path(struct device *dev, struct hardware_path *path)
         int i = 5;
         memset(&path->bc, -1, 6);
 
-        if (is_pci_dev(dev)) {
+        if (dev_is_pci(dev)) {
                 unsigned int devfn = to_pci_dev(dev)->devfn;
                 path->mod = PCI_FUNC(devfn);
                 path->bc[i--] = PCI_SLOT(devfn);
@@ -314,7 +302,7 @@ static void get_node_path(struct device *dev, struct hardware_path *path)
         }
 
         while (dev != &root) {
-                if (is_pci_dev(dev)) {
+                if (dev_is_pci(dev)) {
                         unsigned int devfn = to_pci_dev(dev)->devfn;
                         path->bc[i--] = PCI_SLOT(devfn) | (PCI_FUNC(devfn)<< 5);
                 } else if (dev->bus == &parisc_bus_type) {
@@ -695,7 +683,7 @@ static int check_parent(struct device * dev, void * data)
                 if (dev->bus == &parisc_bus_type) {
                         if (match_parisc_device(dev, d->index, d->modpath))
                                 d->dev = dev;
-                } else if (is_pci_dev(dev)) {
+                } else if (dev_is_pci(dev)) {
                         if (match_pci_device(dev, d->index, d->modpath))
                                 d->dev = dev;
                 } else if (dev->bus == NULL) {
@@ -753,7 +741,7 @@ struct device *hwpath_to_device(struct hardware_path *modpath)
                 if (!parent)
                         return NULL;
         }
-        if (is_pci_dev(parent)) /* pci devices already parse MOD */
+        if (dev_is_pci(parent)) /* pci devices already parse MOD */
                 return parent;
         else
                 return parse_tree_node(parent, 6, modpath);
@@ -772,7 +760,7 @@ void device_to_hwpath(struct device *dev, struct hardware_path *path)
                 padev = to_parisc_device(dev);
                 get_node_path(dev->parent, path);
                 path->mod = padev->hw_path;
-        } else if (is_pci_dev(dev)) {
+        } else if (dev_is_pci(dev)) {
                 get_node_path(dev, path);
         }
 }
diff --git a/arch/powerpc/kernel/eeh_driver.c b/arch/powerpc/kernel/eeh_driver.c
index 36bed5a12750..c17f90d0f73c 100644
--- a/arch/powerpc/kernel/eeh_driver.c
+++ b/arch/powerpc/kernel/eeh_driver.c
@@ -369,7 +369,9 @@ static void *eeh_rmv_device(void *data, void *userdata)
         edev->mode |= EEH_DEV_DISCONNECTED;
         (*removed)++;
 
+        pci_lock_rescan_remove();
         pci_stop_and_remove_bus_device(dev);
+        pci_unlock_rescan_remove();
 
         return NULL;
 }
@@ -416,10 +418,13 @@ static int eeh_reset_device(struct eeh_pe *pe, struct pci_bus *bus)
          * into pcibios_add_pci_devices().
          */
         eeh_pe_state_mark(pe, EEH_PE_KEEP);
-        if (bus)
+        if (bus) {
+                pci_lock_rescan_remove();
                 pcibios_remove_pci_devices(bus);
-        else if (frozen_bus)
+                pci_unlock_rescan_remove();
+        } else if (frozen_bus) {
                 eeh_pe_dev_traverse(pe, eeh_rmv_device, &removed);
+        }
 
         /* Reset the pci controller. (Asserts RST#; resets config space).
          * Reconfigure bridges and devices. Don't try to bring the system
@@ -429,6 +434,8 @@ static int eeh_reset_device(struct eeh_pe *pe, struct pci_bus *bus)
         if (rc)
                 return rc;
 
+        pci_lock_rescan_remove();
+
         /* Restore PE */
         eeh_ops->configure_bridge(pe);
         eeh_pe_restore_bars(pe);
@@ -462,6 +469,7 @@ static int eeh_reset_device(struct eeh_pe *pe, struct pci_bus *bus)
         pe->tstamp = tstamp;
         pe->freeze_count = cnt;
 
+        pci_unlock_rescan_remove();
         return 0;
 }
 
@@ -618,8 +626,11 @@ perm_error:
         eeh_pe_dev_traverse(pe, eeh_report_failure, NULL);
 
         /* Shut down the device drivers for good. */
-        if (frozen_bus)
+        if (frozen_bus) {
+                pci_lock_rescan_remove();
                 pcibios_remove_pci_devices(frozen_bus);
+                pci_unlock_rescan_remove();
+        }
 }
 
 static void eeh_handle_special_event(void)
@@ -692,6 +703,7 @@ static void eeh_handle_special_event(void)
         if (rc == 2 || rc == 1)
                 eeh_handle_normal_event(pe);
         else {
+                pci_lock_rescan_remove();
                 list_for_each_entry_safe(hose, tmp,
                         &hose_list, list_node) {
                         phb_pe = eeh_phb_pe_get(hose);
@@ -703,6 +715,7 @@ static void eeh_handle_special_event(void)
                         eeh_pe_dev_traverse(pe, eeh_report_failure, NULL);
                         pcibios_remove_pci_devices(bus);
                 }
+                pci_unlock_rescan_remove();
         }
 }
 
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index a1e3e40ca3fd..d9476c1fc959 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -835,7 +835,7 @@ static void pcibios_fixup_resources(struct pci_dev *dev)
                  * at 0 as unset as well, except if PCI_PROBE_ONLY is also set
                  * since in that case, we don't want to re-assign anything
                  */
-                pcibios_resource_to_bus(dev, &reg, res);
+                pcibios_resource_to_bus(dev->bus, &reg, res);
                 if (pci_has_flag(PCI_REASSIGN_ALL_RSRC) ||
                     (reg.start == 0 && !pci_has_flag(PCI_PROBE_ONLY))) {
                         /* Only print message if not re-assigning */
@@ -886,7 +886,7 @@ static int pcibios_uninitialized_bridge_resource(struct pci_bus *bus,
 
         /* Job is a bit different between memory and IO */
         if (res->flags & IORESOURCE_MEM) {
-                pcibios_resource_to_bus(dev, &region, res);
+                pcibios_resource_to_bus(dev->bus, &region, res);
 
                 /* If the BAR is non-0 then it's probably been initialized */
                 if (region.start != 0)
diff --git a/arch/powerpc/kernel/pci_of_scan.c b/arch/powerpc/kernel/pci_of_scan.c
index ac0b034f9ae0..83c26d829991 100644
--- a/arch/powerpc/kernel/pci_of_scan.c
+++ b/arch/powerpc/kernel/pci_of_scan.c
@@ -111,7 +111,7 @@ static void of_pci_parse_addrs(struct device_node *node, struct pci_dev *dev)
                 res->name = pci_name(dev);
                 region.start = base;
                 region.end = base + size - 1;
-                pcibios_bus_to_resource(dev, res, &region);
+                pcibios_bus_to_resource(dev->bus, res, &region);
         }
 }
 
@@ -280,7 +280,7 @@ void of_scan_pci_bridge(struct pci_dev *dev)
                 res->flags = flags;
                 region.start = of_read_number(&ranges[1], 2);
                 region.end = region.start + size - 1;
-                pcibios_bus_to_resource(dev, res, &region);
+                pcibios_bus_to_resource(dev->bus, res, &region);
         }
         sprintf(bus->name, "PCI Bus %04x:%02x", pci_domain_nr(bus),
                 bus->number);
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
index 0820362c7b0f..66670ff262a0 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c
@@ -407,8 +407,8 @@ int arch_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
         struct msi_msg msg;
         int rc;
 
-        if (type != PCI_CAP_ID_MSIX && type != PCI_CAP_ID_MSI)
-                return -EINVAL;
+        if (type == PCI_CAP_ID_MSI && nvec > 1)
+                return 1;
         msi_vecs = min(nvec, ZPCI_MSI_VEC_MAX);
         msi_vecs = min_t(unsigned int, msi_vecs, CONFIG_PCI_NR_MSI);
 
diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c
index cb021453de2a..7de8d1f590b7 100644
--- a/arch/sparc/kernel/pci.c
+++ b/arch/sparc/kernel/pci.c
@@ -392,7 +392,7 @@ static void apb_fake_ranges(struct pci_dev *dev,
         res->flags = IORESOURCE_IO;
         region.start = (first << 21);
         region.end = (last << 21) + ((1 << 21) - 1);
-        pcibios_bus_to_resource(dev, res, &region);
+        pcibios_bus_to_resource(dev->bus, res, &region);
 
         pci_read_config_byte(dev, APB_MEM_ADDRESS_MAP, &map);
         apb_calc_first_last(map, &first, &last);
@@ -400,7 +400,7 @@ static void apb_fake_ranges(struct pci_dev *dev,
         res->flags = IORESOURCE_MEM;
         region.start = (first << 29);
         region.end = (last << 29) + ((1 << 29) - 1);
-        pcibios_bus_to_resource(dev, res, &region);
+        pcibios_bus_to_resource(dev->bus, res, &region);
 }
 
 static void pci_of_scan_bus(struct pci_pbm_info *pbm,
@@ -491,7 +491,7 @@ static void of_scan_pci_bridge(struct pci_pbm_info *pbm,
                 res->flags = flags;
                 region.start = GET_64BIT(ranges, 1);
                 region.end = region.start + size - 1;
-                pcibios_bus_to_resource(dev, res, &region);
+                pcibios_bus_to_resource(dev->bus, res, &region);
         }
 after_ranges:
         sprintf(bus->name, "PCI Bus %04x:%02x", pci_domain_nr(bus),
diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h
index 947b5c417e83..1ac6114c9ea5 100644
--- a/arch/x86/include/asm/pci.h
+++ b/arch/x86/include/asm/pci.h
@@ -104,7 +104,7 @@ extern void pci_iommu_alloc(void);
 struct msi_desc;
 int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type);
 void native_teardown_msi_irq(unsigned int irq);
-void native_restore_msi_irqs(struct pci_dev *dev, int irq);
+void native_restore_msi_irqs(struct pci_dev *dev);
 int setup_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc,
                   unsigned int irq_base, unsigned int irq_offset);
 #else
@@ -125,7 +125,6 @@ int setup_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc,
 
 /* generic pci stuff */
 #include <asm-generic/pci.h>
-#define PCIBIOS_MAX_MEM_32 0xffffffff
 
 #ifdef CONFIG_NUMA
 /* Returns the node based on pci bus */
diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h
index 0f1be11e43d2..e45e4da96bf1 100644
--- a/arch/x86/include/asm/x86_init.h
+++ b/arch/x86/include/asm/x86_init.h
@@ -181,7 +181,7 @@ struct x86_msi_ops {
                                u8 hpet_id);
         void (*teardown_msi_irq)(unsigned int irq);
         void (*teardown_msi_irqs)(struct pci_dev *dev);
-        void (*restore_msi_irqs)(struct pci_dev *dev, int irq);
+        void (*restore_msi_irqs)(struct pci_dev *dev);
         int  (*setup_hpet_msi)(unsigned int irq, unsigned int id);
         u32 (*msi_mask_irq)(struct msi_desc *desc, u32 mask, u32 flag);
         u32 (*msix_mask_irq)(struct msi_desc *desc, u32 flag);
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 6c0b43bd024b..d359d0fffa50 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -1034,9 +1034,7 @@ static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger,
 
         if (!acpi_ioapic)
                 return 0;
-        if (!dev)
-                return 0;
-        if (dev->bus != &pci_bus_type)
+        if (!dev || !dev_is_pci(dev))
                 return 0;
 
         pdev = to_pci_dev(dev);
diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c
index 021783b1f46a..e48b674639cc 100644
--- a/arch/x86/kernel/x86_init.c
+++ b/arch/x86/kernel/x86_init.c
@@ -136,9 +136,9 @@ void arch_teardown_msi_irq(unsigned int irq)
         x86_msi.teardown_msi_irq(irq);
 }
 
-void arch_restore_msi_irqs(struct pci_dev *dev, int irq)
+void arch_restore_msi_irqs(struct pci_dev *dev)
 {
-        x86_msi.restore_msi_irqs(dev, irq);
+        x86_msi.restore_msi_irqs(dev);
 }
 u32 arch_msi_mask_irq(struct msi_desc *desc, u32 mask, u32 flag)
 {
diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c
index 5eee4959785d..103e702ec5a7 100644
--- a/arch/x86/pci/xen.c
+++ b/arch/x86/pci/xen.c
@@ -337,7 +337,7 @@ out:
         return ret;
 }
 
-static void xen_initdom_restore_msi_irqs(struct pci_dev *dev, int irq)
+static void xen_initdom_restore_msi_irqs(struct pci_dev *dev)
 {
         int ret = 0;