Hi,
Thanks for the patch.
The commit title generally should be 'drm/looongson: Add a check for
lsdc_bo_create() errors'
not 'drm: loongson: xxxx'
On 2023/7/18 15:01, Dan Carpenter wrote:
The lsdc_bo_create() function can fail so add a check for that.
Fixes: f39db26c5428 ("drm: Add kms driver for loongson display controller")
Please drop this Fixes tag, because you patch just add a error handling.
Yes, the lsdc_bo_create() function can fail, but this is generally not
happen.
Even if the fail happened, your patch is not fixing the root problem.
I know that you create this patch with the bare brain,
I would like hear more practical usage or bugs of this driver.
And mention more in the commit message is preferred.
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
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)) {
