diff --git a/drivers/pci/vgaarb.c b/drivers/pci/vgaarb.c
index 3f8fead..58e0a12 100644
--- a/drivers/pci/vgaarb.c
+++ b/drivers/pci/vgaarb.c
@@ -629,6 +629,41 @@ static bool vga_arb_integrated_gpu(struct device *dev)
 }
 
 /*
+ * Return true if vgadev is a better default VGA device than the best one
+ * we've seen so far.
+ */
+static bool vga_is_boot_device(struct vga_device *vgadev)
+{
+	struct vga_device *boot_vga = vgadev_find(vga_default_device());
+
+	/*
+	 * We select the default VGA device in this order:
+	 *   Firmware framebuffer (see vga_arb_select_default_device())
+	 *   Legacy VGA device (owns VGA_RSRC_LEGACY_MASK)
+	 *   Non-legacy integrated device (see vga_arb_select_default_device())
+	 *   Non-legacy discrete device (see vga_arb_select_default_device())
+	 *   Other device (see vga_arb_select_default_device())
+	 */
+
+	/*
+	 * A legacy VGA device has MEM and IO enabled and any bridges
+	 * leading to it have PCI_BRIDGE_CTL_VGA enabled so the legacy
+	 * resources ([mem 0xa0000-0xbffff], [io 0x3b0-0x3bb], etc) are
+	 * routed to it.
+	 *
+	 * We use the first one we find, so if we've already found one,
+	 * vgadev is no better.
+	 */
+	if (boot_vga)
+		return false;
+
+	if ((vgadev->owns & VGA_RSRC_LEGACY_MASK) == VGA_RSRC_LEGACY_MASK)
+		return true;
+
+	return false;
+}
+
+/*
  * Rules for using a bridge to control a VGA descendant decoding: if a bridge
  * has only one VGA descendant then it can be used to control the VGA routing
  * for that device. It should always use the bridge closest to the device to
@@ -755,12 +790,10 @@ static bool vga_arbiter_add_pci_device(struct pci_dev *pdev)
 		bus = bus->parent;
 	}
 
-	/* Deal with VGA default device. Use first enabled one
-	 * by default if arch doesn't have it's own hook
-	 */
-	if (vga_default == NULL &&
-	    ((vgadev->owns & VGA_RSRC_LEGACY_MASK) == VGA_RSRC_LEGACY_MASK)) {
-		vgaarb_info(&pdev->dev, "setting as boot VGA device\n");
+	if (vga_is_boot_device(vgadev)) {
+		vgaarb_info(&pdev->dev, "setting as boot VGA device%s\n",
+			    vga_default_device() ?
+			    " (overriding previous)" : "");
 		vga_set_default_device(pdev);
 	}