PCI: Unhide the SMBus on the HP xw4100

Unhide the SMBus on the HP xw4100. This gives access to a hardware
monitoring chip (ADT7463) and to the memory module SPD EEPROMs. I
checked that ACPI wasn't accessing the SMBus, so it should be safe.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 20a419d..2fbf60e 100644 (file)
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -1019,6 +1019,11 @@ static void __init asus_hides_smbus_hostbridge(struct pci_dev *dev)
                        case 0x12bd: /* HP D530 */
                                asus_hides_smbus = 1;
                        }
+               else if (dev->device == PCI_DEVICE_ID_INTEL_82875_HB)
+                       switch (dev->subsystem_device) {
+                       case 0x12bf: /* HP xw4100 */
+                               asus_hides_smbus = 1;
+                       }
                else if (dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB)
                        switch (dev->subsystem_device) {
                        case 0x099c: /* HP Compaq nx6110 */
@@ -1050,6 +1055,7 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,     PCI_DEVICE_ID_INTEL_82845_HB,   asus
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,  PCI_DEVICE_ID_INTEL_82845G_HB,  asus_hides_smbus_hostbridge);
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,  PCI_DEVICE_ID_INTEL_82850_HB,   asus_hides_smbus_hostbridge);
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,  PCI_DEVICE_ID_INTEL_82865_HB,   asus_hides_smbus_hostbridge);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,  PCI_DEVICE_ID_INTEL_82875_HB,   asus_hides_smbus_hostbridge);
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,  PCI_DEVICE_ID_INTEL_7205_0,     asus_hides_smbus_hostbridge);
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,  PCI_DEVICE_ID_INTEL_E7501_MCH,  asus_hides_smbus_hostbridge);
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL,  PCI_DEVICE_ID_INTEL_82855PM_HB, asus_hides_smbus_hostbridge);