[PATCH] drm/buddy: Modify duplicate list_splice_tail call

[Christian König]

Am 16.02.24 um 12:46 schrieb Arunpravin Paneer Selvam:
>
>
> On 2/16/2024 4:41 PM, Matthew Auld wrote:
>> On 16/02/2024 10:00, Arunpravin Paneer Selvam wrote:
>>> Remove the duplicate list_splice_tail call when the
>>> total_allocated < size condition is true.
>>>
>>> Cc: <stable at vger.kernel.org> # 6.7+
>>> Fixes: 8746c6c9dfa3 ("drm/buddy: Fix alloc_range() error handling 
>>> code")
>>> Reported-by: Bert Karwatzki <spasswolf at web.de>
>>> Signed-off-by: Arunpravin Paneer Selvam 
>>> <Arunpravin.PaneerSelvam at amd.com>
>>> ---
>>>   drivers/gpu/drm/drm_buddy.c | 4 ++--
>>>   1 file changed, 2 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/drivers/gpu/drm/drm_buddy.c b/drivers/gpu/drm/drm_buddy.c
>>> index c1a99bf4dffd..c4222b886db7 100644
>>> --- a/drivers/gpu/drm/drm_buddy.c
>>> +++ b/drivers/gpu/drm/drm_buddy.c
>>> @@ -538,13 +538,13 @@ static int __alloc_range(struct drm_buddy *mm,
>>>           list_add(&block->left->tmp_link, dfs);
>>>       } while (1);
>>>   -    list_splice_tail(&allocated, blocks);
>>> -
>>>       if (total_allocated < size) {
>>>           err = -ENOSPC;
>>>           goto err_free;
>>>       }
>>>   +    list_splice_tail(&allocated, blocks);
>>
>> Sigh. Can we extend the unit test(s) to catch this?
> Sure, Let me check.

In the meantime I'm going to push this one to drm-misc-fixes.

Regards,
Christian.

>
> Regards,
> Arun.
>>
>> Reviewed-by: Matthew Auld <matthew.auld at intel.com>
>>
>>> +
>>>       return 0;
>>>     err_undo:
>>>
>>> base-commit: a64056bb5a3215bd31c8ce17d609ba0f4d5c55ea
>