drm/ast: use drm_modeset_lock_all
Just a call to drm_helper_resume_force_mode, obviously wants full
locking for that.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/ast/ast_drv.c b/drivers/gpu/drm/ast/ast_drv.c
index 2d2c2f8..df0d0a0 100644
--- a/drivers/gpu/drm/ast/ast_drv.c
+++ b/drivers/gpu/drm/ast/ast_drv.c
@@ -94,9 +94,9 @@
ast_post_gpu(dev);
drm_mode_config_reset(dev);
- mutex_lock(&dev->mode_config.mutex);
+ drm_modeset_lock_all(dev);
drm_helper_resume_force_mode(dev);
- mutex_unlock(&dev->mode_config.mutex);
+ drm_modeset_unlock_all(dev);
console_lock();
ast_fbdev_set_suspend(dev, 0);