drm/msm: fix bug after preclose removal

commit 53190c71
Author:     Daniel Vetter <daniel.vetter@ffwll.ch>
AuthorDate: Mon Jan 25 22:16:49 2016 +0100
Commit:     Daniel Vetter <daniel.vetter@ffwll.ch>
CommitDate: Mon Feb 8 09:55:50 2016 +0100

    drm/msm: Nuke preclose hooks

Left around the unused (and null) preclose fxn ptr, and things
predictibly explode when you try to call that.
Signed-off-by: Rob Clark <robdclark@gmail.com>

drivers/gpu/drm/msm/msm_drv.c

@@ -467,9 +467,6 @@ static void msm_preclose(struct drm_device *dev, struct drm_file *file)
 	struct msm_file_private *ctx = file->driver_priv;
 	struct msm_kms *kms = priv->kms;
 
-	if (kms)
-		kms->funcs->preclose(kms, file);
-
 	mutex_lock(&dev->struct_mutex);
 	if (ctx == priv->lastctx)
 		priv->lastctx = NULL;

drivers/gpu/drm/msm/msm_kms.h

@@ -55,7 +55,6 @@ struct msm_kms_funcs {
 			struct drm_encoder *slave_encoder,
 			bool is_cmd_mode);
 	/* cleanup: */
-	void (*preclose)(struct msm_kms *kms, struct drm_file *file);
 	void (*destroy)(struct msm_kms *kms);
 };