[PATCH] PCI: 6700/6702PXH quirk

On the 6700/6702 PXH part, a MSI may get corrupted if an ACPI hotplug
driver and SHPC driver in MSI mode are used together.

This patch will prevent MSI from being enabled for the SHPC as part of
an early pci quirk, as well as on any pci device which sets the no_msi
bit.

Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2 files changed, 7 insertions, 1 deletions

diff --git a/include/linux/pci.h b/include/linux/pci.h
index 8621cf42b46f..bc4c40000c0d 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -556,7 +556,8 @@ struct pci_dev {
         /* keep track of device state */
         unsigned int    is_enabled:1;   /* pci_enable_device has been called */
         unsigned int    is_busmaster:1; /* device is busmaster */
-        
+        unsigned int    no_msi:1;       /* device may not use msi */
+
         u32             saved_config_space[16]; /* config space saved at suspend time */
         struct bin_attribute *rom_attr; /* attribute descriptor for sysfs ROM entry */
         int rom_attr_enabled;           /* has display of the rom attribute been enabled? */
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index bc4cc10fabe9..51e61e96051c 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -2281,6 +2281,11 @@
 #define PCI_VENDOR_ID_INTEL             0x8086
 #define PCI_DEVICE_ID_INTEL_EESSC       0x0008
 #define PCI_DEVICE_ID_INTEL_21145       0x0039
+#define PCI_DEVICE_ID_INTEL_PXHD_0      0x0320
+#define PCI_DEVICE_ID_INTEL_PXHD_1      0x0321
+#define PCI_DEVICE_ID_INTEL_PXH_0       0x0329
+#define PCI_DEVICE_ID_INTEL_PXH_1       0x032A
+#define PCI_DEVICE_ID_INTEL_PXHV        0x032C
 #define PCI_DEVICE_ID_INTEL_82375       0x0482
 #define PCI_DEVICE_ID_INTEL_82424       0x0483
 #define PCI_DEVICE_ID_INTEL_82378       0x0484