This code doesn't check for lsdc_bo_create() failure and it could lead
to a crash. It can fail for a variety of reasons, but the most common
cause would be low memory. Add a check.
Fixes: f39db26c5428 ("drm: Add kms driver for loongson display controller")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Reviewed-by: Sui Jingfeng <suijingfeng@xxxxxxxxxxx>
---
v2: change subject and re-word the commit message
drivers/gpu/drm/loongson/lsdc_ttm.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/loongson/lsdc_ttm.c b/drivers/gpu/drm/loongson/lsdc_ttm.c
index bb0c8fd43a75..bf79dc55afa4 100644
--- a/drivers/gpu/drm/loongson/lsdc_ttm.c
+++ b/drivers/gpu/drm/loongson/lsdc_ttm.c
@@ -496,6 +496,8 @@ struct lsdc_bo *lsdc_bo_create_kernel_pinned(struct drm_device *ddev,
int ret;
lbo = lsdc_bo_create(ddev, domain, size, true, NULL, NULL);
+ if (IS_ERR(lbo))
+ return ERR_CAST(lbo);
ret = lsdc_bo_reserve(lbo);
if (unlikely(ret)) {
--
2.39.2
