Commit b0e9267d authored by Dan Carpenter's avatar Dan Carpenter Committed by Sui Jingfeng
Browse files

drm/loongson: Add a check for lsdc_bo_create() errors 



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: f39db26c ("drm: Add kms driver for loongson display controller")
Signed-off-by: default avatarDan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: default avatarSui Jingfeng <suijingfeng@loongson.cn>
Signed-off-by: default avatarSui Jingfeng <sui.jingfeng@linux.dev>
Link: https://patchwork.freedesktop.org/patch/msgid/ZLeijglIMPve2Iio@kadam
parent e4774e99

drivers/gpu/drm/loongson/lsdc_ttm.c

+2 −0
Original line number Diff line number Diff line
@@ -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)) {