--- zzzz-none-000/linux-3.10.107/drivers/gpu/drm/via/via_drv.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/gpu/drm/via/via_drv.c	2021-02-04 17:41:59.000000000 +0000
@@ -46,7 +46,7 @@
 	return 0;
 }
 
-void via_driver_postclose(struct drm_device *dev, struct drm_file *file)
+static void via_driver_postclose(struct drm_device *dev, struct drm_file *file)
 {
 	struct via_file_private *file_priv = file->driver_priv;
 
@@ -62,9 +62,8 @@
 	.open = drm_open,
 	.release = drm_release,
 	.unlocked_ioctl = drm_ioctl,
-	.mmap = drm_mmap,
+	.mmap = drm_legacy_mmap,
 	.poll = drm_poll,
-	.fasync = drm_fasync,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl = drm_compat_ioctl,
 #endif
@@ -73,13 +72,14 @@
 
 static struct drm_driver driver = {
 	.driver_features =
-	    DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_HAVE_IRQ |
+	    DRIVER_USE_AGP | DRIVER_HAVE_IRQ |
 	    DRIVER_IRQ_SHARED,
 	.load = via_driver_load,
 	.unload = via_driver_unload,
 	.open = via_driver_open,
 	.preclose = via_reclaim_buffers_locked,
 	.postclose = via_driver_postclose,
+	.set_busid = drm_pci_set_busid,
 	.context_dtor = via_final_context,
 	.get_vblank_counter = via_get_vblank_counter,
 	.enable_vblank = via_enable_vblank,