From: Christian König <christian.koenig@amd.com>
Date: Tue, 6 Jul 2021 06:51:25 +0000 (+0200)
Subject: drm/qxl: add NULL check for bo->resource
X-Git-Url: https://git.baikalelectronics.ru/sdk/?a=commitdiff_plain;h=3efe180d5105d367ae1dfadb97892ab93a89a783;p=kernel.git

drm/qxl: add NULL check for bo->resource

When allocations fails that can be NULL now.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reported-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Tested-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Tested-by: Roberto Sassu <roberto.sassu@huawei.com>
Fixes: bfa3357ef9ab ("drm/ttm: allocate resource object instead of embedding it v2")
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210708114710.8186-1-christian.koenig@amd.com
---

diff --git a/drivers/gpu/drm/qxl/qxl_ttm.c b/drivers/gpu/drm/qxl/qxl_ttm.c
index 19fd39d9a00cb..37a1b6a6ad6dc 100644
--- a/drivers/gpu/drm/qxl/qxl_ttm.c
+++ b/drivers/gpu/drm/qxl/qxl_ttm.c
@@ -127,7 +127,7 @@ static void qxl_bo_move_notify(struct ttm_buffer_object *bo,
 	struct qxl_bo *qbo;
 	struct qxl_device *qdev;
 
-	if (!qxl_ttm_bo_is_qxl_bo(bo))
+	if (!qxl_ttm_bo_is_qxl_bo(bo) || !bo->resource)
 		return;
 	qbo = to_qxl_bo(bo);
 	qdev = to_qxl(qbo->tbo.base.dev);