[PATCH] xen/x86: obtain full video frame buffer address for Dom0 also under EFI

[Jan Beulich <jbeulich@xxxxxxxx>]

The initial change would not work when Xen was booted from EFI: There is
an early exit from the case block in that case. Move the necessary code
ahead of that.

Fixes: 335e4dd67b48 ("xen/x86: obtain upper 32 bits of video frame buffer 
address for Dom0")
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

--- a/arch/x86/xen/vga.c
+++ b/arch/x86/xen/vga.c
@@ -57,6 +57,14 @@ void __init xen_init_vga(const struct do
                screen_info->rsvd_size = info->u.vesa_lfb.rsvd_size;
                screen_info->rsvd_pos = info->u.vesa_lfb.rsvd_pos;
 
+               if (size >= offsetof(struct dom0_vga_console_info,
+                                    u.vesa_lfb.ext_lfb_base)
+                   + sizeof(info->u.vesa_lfb.ext_lfb_base)
+                   && info->u.vesa_lfb.ext_lfb_base) {
+                       screen_info->ext_lfb_base = 
info->u.vesa_lfb.ext_lfb_base;
+                       screen_info->capabilities |= 
VIDEO_CAPABILITY_64BIT_BASE;
+               }
+
                if (info->video_type == XEN_VGATYPE_EFI_LFB) {
                        screen_info->orig_video_isVGA = VIDEO_TYPE_EFI;
                        break;
@@ -66,14 +74,6 @@ void __init xen_init_vga(const struct do
                                     u.vesa_lfb.mode_attrs)
                    + sizeof(info->u.vesa_lfb.mode_attrs))
                        screen_info->vesa_attributes = 
info->u.vesa_lfb.mode_attrs;
-
-               if (size >= offsetof(struct dom0_vga_console_info,
-                                    u.vesa_lfb.ext_lfb_base)
-                   + sizeof(info->u.vesa_lfb.ext_lfb_base)
-                   && info->u.vesa_lfb.ext_lfb_base) {
-                       screen_info->ext_lfb_base = 
info->u.vesa_lfb.ext_lfb_base;
-                       screen_info->capabilities |= 
VIDEO_CAPABILITY_64BIT_BASE;
-               }
                break;
        }
 }