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

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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: f39db26c54 ("drm: Add kms driver for loongson display controller")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Sui Jingfeng <suijingfeng@loongson.cn>
Signed-off-by: Sui Jingfeng <sui.jingfeng@linux.dev>
Link: https://patchwork.freedesktop.org/patch/msgid/ZLeijglIMPve2Iio@kadam
This commit is contained in:
Dan Carpenter 2023-07-19 11:45:02 +03:00 committed by Sui Jingfeng
parent e4774e9968
commit b0e9267d4c
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/loongson/lsdc_ttm.c
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@ -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)) {