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
  ...

3 files changed, 20 insertions, 7 deletions

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);