nv50/nvc0: fix crash when channel allocation fails

diff --git a/src/gallium/drivers/nv50/nv50_screen.c b/src/gallium/drivers/nv50/nv50_screen.c
index 47eba85..3cd5fdf 100644 (file)
--- a/src/gallium/drivers/nv50/nv50_screen.c
+++ b/src/gallium/drivers/nv50/nv50_screen.c
@@ -228,7 +228,8 @@ nv50_screen_destroy(struct pipe_screen *pscreen)
       nouveau_fence_wait(screen->base.fence.current);
       nouveau_fence_ref (NULL, &screen->base.fence.current);
    }
-   screen->base.channel->user_private = NULL;
+   if (screen->base.channel)
+      screen->base.channel->user_private = NULL;
    if (screen->blitctx)
       FREE(screen->blitctx);
 

diff --git a/src/gallium/drivers/nvc0/nvc0_screen.c b/src/gallium/drivers/nvc0/nvc0_screen.c
index 38f918a..79c3e36 100644 (file)
--- a/src/gallium/drivers/nvc0/nvc0_screen.c
+++ b/src/gallium/drivers/nvc0/nvc0_screen.c
@@ -220,7 +220,8 @@ nvc0_screen_destroy(struct pipe_screen *pscreen)
       nouveau_fence_wait(screen->base.fence.current);
       nouveau_fence_ref(NULL, &screen->base.fence.current);
    }
-   screen->base.channel->user_private = NULL;
+   if (screen->base.channel)
+      screen->base.channel->user_private = NULL;
 
    if (screen->blitctx)
       FREE(screen->blitctx);