PCI: use ACPI _CRS data by default

At this point, it seems to solve more problems than it causes, so let's try using it by default.  It's an easy revert if it ends up causing trouble.

Reviewed-by: Yinghai Lu <yhlu.kernel@gmail.com>
Acked-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

4 files changed, 5 insertions, 5 deletions

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..8d898e0d3609 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -217,7 +217,7 @@ 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;