Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6

* 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (74 commits)
  PCI: make msi_free_irqs() to use msix_mask_irq() instead of open coded write
  PCI: Fix the NIU MSI-X problem in a better way
  PCI ASPM: remove get_root_port_link
  PCI ASPM: cleanup pcie_aspm_sanity_check
  PCI ASPM: remove has_switch field
  PCI ASPM: cleanup calc_Lx_latency
  PCI ASPM: cleanup pcie_aspm_get_cap_device
  PCI ASPM: cleanup clkpm checks
  PCI ASPM: cleanup __pcie_aspm_check_state_one
  PCI ASPM: cleanup initialization
  PCI ASPM: cleanup change input argument of aspm functions
  PCI ASPM: cleanup misc in struct pcie_link_state
  PCI ASPM: cleanup clkpm state in struct pcie_link_state
  PCI ASPM: cleanup latency field in struct pcie_link_state
  PCI ASPM: cleanup aspm state field in struct pcie_link_state
  PCI ASPM: fix typo in struct pcie_link_state
  PCI: drivers/pci/slot.c should depend on CONFIG_SYSFS
  PCI: remove redundant __msi_set_enable()
  PCI PM: consistently use type bool for wake enable variable
  x86/ACPI: Correct maximum allowed _CRS returned resources and warn if exceeded
  ...

5 files changed, 33 insertions, 11 deletions

diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h
index b51a1e8b0baf..927958d13c19 100644
--- a/arch/x86/include/asm/pci.h
+++ b/arch/x86/include/asm/pci.h
@@ -130,6 +130,7 @@ extern void pci_iommu_alloc(void);
 
 /* 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/pci_x86.h b/arch/x86/include/asm/pci_x86.h
index e60fd3e14bdf..cb739cc0a080 100644
--- a/arch/x86/include/asm/pci_x86.h
+++ b/arch/x86/include/asm/pci_x86.h
@@ -25,7 +25,7 @@
 #define PCI_BIOS_IRQ_SCAN       0x2000
 #define PCI_ASSIGN_ALL_BUSSES   0x4000
 #define PCI_CAN_SKIP_ISA_ALIGN  0x8000
-#define PCI_USE__CRS            0x10000
+#define PCI_NO_ROOT_CRS         0x10000
 #define PCI_CHECK_ENABLE_AMD_MMCONF     0x20000
 #define PCI_HAS_IO_ECS          0x40000
 #define PCI_NOASSIGN_ROMS       0x80000
diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index c0ecf250fe51..16c3fda85bba 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -38,15 +38,26 @@ count_resource(struct acpi_resource *acpi_res, void *data)
         struct acpi_resource_address64 addr;
         acpi_status status;
 
-        if (info->res_num >= PCI_BUS_NUM_RESOURCES)
-                return AE_OK;
-
         status = resource_to_addr(acpi_res, &addr);
         if (ACPI_SUCCESS(status))
                 info->res_num++;
         return AE_OK;
 }
 
+static int
+bus_has_transparent_bridge(struct pci_bus *bus)
+{
+        struct pci_dev *dev;
+
+        list_for_each_entry(dev, &bus->devices, bus_list) {
+                u16 class = dev->class >> 8;
+
+                if (class == PCI_CLASS_BRIDGE_PCI && dev->transparent)
+                        return true;
+        }
+        return false;
+}
+
 static acpi_status
 setup_resource(struct acpi_resource *acpi_res, void *data)
 {
@@ -56,9 +67,7 @@ setup_resource(struct acpi_resource *acpi_res, void *data)
         acpi_status status;
         unsigned long flags;
         struct resource *root;
-
-        if (info->res_num >= PCI_BUS_NUM_RESOURCES)
-                return AE_OK;
+        int max_root_bus_resources = PCI_BUS_NUM_RESOURCES;
 
         status = resource_to_addr(acpi_res, &addr);
         if (!ACPI_SUCCESS(status))
@@ -82,6 +91,18 @@ setup_resource(struct acpi_resource *acpi_res, void *data)
         res->end = res->start + addr.address_length - 1;
         res->child = NULL;
 
+        if (bus_has_transparent_bridge(info->bus))
+                max_root_bus_resources -= 3;
+        if (info->res_num >= max_root_bus_resources) {
+                printk(KERN_WARNING "PCI: Failed to allocate 0x%lx-0x%lx "
+                        "from %s for %s due to _CRS returning more than "
+                        "%d resource descriptors\n", (unsigned long) res->start,
+                        (unsigned long) res->end, root->name, info->name,
+                        max_root_bus_resources);
+                info->res_num++;
+                return AE_OK;
+        }
+
         if (insert_resource(root, res)) {
                 printk(KERN_ERR "PCI: Failed to allocate 0x%lx-0x%lx "
                         "from %s for %s\n", (unsigned long) res->start,
@@ -217,7 +238,7 @@ struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_device *device, int do
 #endif
         }
 
-        if (bus && (pci_probe & PCI_USE__CRS))
+        if (bus && !(pci_probe & PCI_NO_ROOT_CRS))
                 get_current_resources(device, busnum, domain, bus);
         return bus;
 }
diff --git a/arch/x86/pci/amd_bus.c b/arch/x86/pci/amd_bus.c
index f893d6a6e803..2255f880678b 100644
--- a/arch/x86/pci/amd_bus.c
+++ b/arch/x86/pci/amd_bus.c
@@ -101,7 +101,7 @@ void x86_pci_root_bus_res_quirks(struct pci_bus *b)
         struct pci_root_info *info;
 
         /* don't go for it if _CRS is used */
-        if (pci_probe & PCI_USE__CRS)
+        if (!(pci_probe & PCI_NO_ROOT_CRS))
                 return;
 
         /* if only one root bus, don't need to anything */
diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c
index 2202b6257b82..4740119e4bb7 100644
--- a/arch/x86/pci/common.c
+++ b/arch/x86/pci/common.c
@@ -515,8 +515,8 @@ char * __devinit  pcibios_setup(char *str)
         } else if (!strcmp(str, "assign-busses")) {
                 pci_probe |= PCI_ASSIGN_ALL_BUSSES;
                 return NULL;
-        } else if (!strcmp(str, "use_crs")) {
-                pci_probe |= PCI_USE__CRS;
+        } else if (!strcmp(str, "nocrs")) {
+                pci_probe |= PCI_NO_ROOT_CRS;
                 return NULL;
         } else if (!strcmp(str, "earlydump")) {
                 pci_early_dump_regs = 1;