st/xorg: Fix crash on startup.

Signed-off-by: Dave Airlie <airlied@redhat.com>
Tested-by: Michel Dänzer <michel.daenzer@amd.com>

diff --git a/src/gallium/state_trackers/xorg/xorg_driver.c b/src/gallium/state_trackers/xorg/xorg_driver.c
index 4b128221b75acdd352151b0a2e6402f362052a78..1b0b4c6b7a00a31117acd9ff20d440ec13e25bda 100644 (file)
--- a/src/gallium/state_trackers/xorg/xorg_driver.c
+++ b/src/gallium/state_trackers/xorg/xorg_driver.c
@@ -71,6 +71,7 @@ static Bool drv_screen_init(SCREEN_INIT_ARGS_DECL);
 static Bool drv_switch_mode(SWITCH_MODE_ARGS_DECL);
 static void drv_adjust_frame(ADJUST_FRAME_ARGS_DECL);
 static Bool drv_enter_vt(VT_FUNC_ARGS_DECL);
+static Bool drv_enter_vt_flags(ScrnInfoPtr pScrn, int flags);
 static void drv_leave_vt(VT_FUNC_ARGS_DECL);
 static void drv_free_screen(FREE_SCREEN_ARGS_DECL);
 static ModeStatus drv_valid_mode(SCRN_ARG_TYPE arg, DisplayModePtr mode, Bool verbose,
@@ -887,7 +888,7 @@ drv_screen_init(SCREEN_INIT_ARGS_DECL)
     if (serverGeneration == 1)
        xf86ShowUnusedOptions(pScrn->scrnIndex, pScrn->options);
 
-    return drv_enter_vt(VT_FUNC_ARGS);
+    return drv_enter_vt_flags(pScrn, 1);
 }
 
 static void
@@ -959,9 +960,8 @@ drv_leave_vt(VT_FUNC_ARGS_DECL)
  * This gets called when gaining control of the VT, and from ScreenInit().
  */
 static Bool
-drv_enter_vt(VT_FUNC_ARGS_DECL)
+drv_enter_vt_flags(ScrnInfoPtr pScrn, int flags)
 {
-    SCRN_INFO_PTR(arg);
     modesettingPtr ms = modesettingPTR(pScrn);
     CustomizerPtr cust = ms->cust;
 
@@ -971,7 +971,7 @@ drv_enter_vt(VT_FUNC_ARGS_DECL)
     if (!ms->create_front_buffer(pScrn))
        return FALSE;
 
-    if (!ms->bind_front_buffer(pScrn))
+    if (!flags && !ms->bind_front_buffer(pScrn))
        return FALSE;
 
     if (!xf86SetDesiredModes(pScrn))
@@ -983,6 +983,13 @@ drv_enter_vt(VT_FUNC_ARGS_DECL)
     return TRUE;
 }
 
+static Bool
+drv_enter_vt(VT_FUNC_ARGS_DECL)
+{
+    SCRN_INFO_PTR(arg);
+    return drv_enter_vt_flags(pScrn, 0);
+}
+
 static Bool
 drv_switch_mode(SWITCH_MODE_ARGS_DECL)
 {