drm/qxl: balance dumb_shadow_bo pin

The shadow bo is created in pinned state, so we have to unpin it when dropping the reference. Otherwise ttm is unhappy and throws a WARN() on release. Signed-off-by: Gerd Hoffmann <[email protected]> Acked-by: Thomas Zimmermann <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
archeYR · May 12, 2021 · af4c1a8 · af4c1a8
1 parent 1d878df
commit af4c1a8
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/drivers/gpu/drm/qxl/qxl_display.c b/drivers/gpu/drm/qxl/qxl_display.c
@@ -801,6 +801,7 @@ static void qxl_prepare_shadow(struct qxl_device *qdev, struct qxl_bo *user_bo,
 	    qdev->dumb_shadow_bo->surf.width  != surf.width ||
 	    qdev->dumb_shadow_bo->surf.height != surf.height) {
 		if (qdev->dumb_shadow_bo) {
+			qxl_bo_unpin(qdev->dumb_shadow_bo);
 			drm_gem_object_put
 				(&qdev->dumb_shadow_bo->tbo.base);
 			qdev->dumb_shadow_bo = NULL;