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>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 20a419d3ffa4..2fbf60eac610 100644
--- 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);