1 files changed, 9 insertions, 1 deletions

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 6dbe14cc4f74..7792c8f7c6dd 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -53,7 +53,7 @@ extern int intel_agp_enabled;
 
 #define INTEL_VGA_DEVICE(id, info) {            \
         .class = PCI_CLASS_DISPLAY_VGA << 8,    \
-        .class_mask = 0xffff00,                 \
+        .class_mask = 0xff0000,                 \
         .vendor = 0x8086,                       \
         .device = id,                           \
         .subvendor = PCI_ANY_ID,                \
@@ -414,6 +414,14 @@ int i965_reset(struct drm_device *dev, u8 flags)
 static int __devinit
 i915_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 {
+        /* Only bind to function 0 of the device. Early generations
+         * used function 1 as a placeholder for multi-head. This causes
+         * us confusion instead, especially on the systems where both
+         * functions have the same PCI-ID!
+         */
+        if (PCI_FUNC(pdev->devfn))
+                return -ENODEV;
+
         return drm_get_pci_dev(pdev, ent, &driver);
 }