[PATCH 06/36] drm/amdgpu: use the unlocked drm_gem_object_put

Christian König christian.koenig at amd.com
Fri May 8 08:16:44 UTC 2020


Am 07.05.20 um 20:03 schrieb Sam Ravnborg:
> Hi Emil.
>
> On Thu, May 07, 2020 at 04:07:52PM +0100, Emil Velikov wrote:
>> From: Emil Velikov <emil.velikov at collabora.com>
>>
>> The driver does not hold struct_mutex, thus using the locked version of
>> the helper is incorrect.
>>
>> Cc: Alex Deucher <alexander.deucher at amd.com>
>> Cc: Christian König <christian.koenig at amd.com>
>> Cc: amd-gfx at lists.freedesktop.org
>> Fixes: a39414716ca0 ("drm/amdgpu: add independent DMA-buf import v9"):
>> Signed-off-by: Emil Velikov <emil.l.velikov at gmail.com>
>> ---
>>   drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
>> index 43d8ed7dbd00..652c57a3b847 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
>> @@ -587,7 +587,7 @@ struct drm_gem_object *amdgpu_gem_prime_import(struct drm_device *dev,
>>   	attach = dma_buf_dynamic_attach(dma_buf, dev->dev,
>>   					&amdgpu_dma_buf_attach_ops, obj);
>>   	if (IS_ERR(attach)) {
>> -		drm_gem_object_put(obj);
>> +		drm_gem_object_put_unlocked(obj);
>>   		return ERR_CAST(attach);
>>   	}
> Likewise previous patch.
> Drop this as the patch is correct after the rename a few pathces later.

Well this is a bug fix in the error path and should probably be back 
ported, so having a separate patch is certainly a good idea.

Christian.

>
> 	Sam
>
>>   
>> -- 
>> 2.25.1
>>
>> _______________________________________________
>> dri-devel mailing list
>> dri-devel at lists.freedesktop.org
>> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.freedesktop.org%2Fmailman%2Flistinfo%2Fdri-devel&data=02%7C01%7Cchristian.koenig%40amd.com%7C41036bd7ab804d8bebdf08d7f2b0e938%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637244713989571165&sdata=d0LysMNmsc%2BSzSkYsZDmE43azU0nmAb%2B1tFHn%2BMNxDg%3D&reserved=0



More information about the dri-devel mailing list