1 files changed, 16 insertions, 6 deletions

diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index e2a4da7d7fab..2a512bc0d4ab 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -1075,7 +1075,6 @@ static __inline__ int drm_core_check_feature(struct drm_device *dev,
         return ((dev->driver->driver_features & feature) ? 1 : 0);
 }
 
-
 static inline int drm_dev_to_irq(struct drm_device *dev)
 {
         if (drm_core_check_feature(dev, DRIVER_USE_PLATFORM_DEVICE))
@@ -1084,11 +1083,22 @@ static inline int drm_dev_to_irq(struct drm_device *dev)
                 return dev->pdev->irq;
 }
 
-#ifdef __alpha__
-#define drm_get_pci_domain(dev) dev->hose->index
-#else
-#define drm_get_pci_domain(dev) 0
-#endif
+static inline int drm_get_pci_domain(struct drm_device *dev)
+{
+        if (drm_core_check_feature(dev, DRIVER_USE_PLATFORM_DEVICE))
+                return 0;
+
+#ifndef __alpha__
+        /* For historical reasons, drm_get_pci_domain() is busticated
+         * on most archs and has to remain so for userspace interface
+         * < 1.4, except on alpha which was right from the beginning
+         */
+        if (dev->if_version < 0x10004)
+                return 0;
+#endif /* __alpha__ */
+
+        return pci_domain_nr(dev->pdev->bus);
+}
 
 #if __OS_HAS_AGP
 static inline int drm_core_has_AGP(struct drm_device *dev)