[PATCH] drm/amdgpu/soc15: skip reset on init

[Lin, Amber]

Acked-by: Amber Lin <Amber.Lin at amd.com>

On 2019-05-17 1:02 p.m., Alex Deucher wrote:
> [CAUTION: External Email]
>
> On Fri, May 17, 2019 at 10:47 AM Lin, Amber <Amber.Lin at amd.com> wrote:
>>
>>
>> On 2019-05-17 10:26 a.m., Alex Deucher wrote:
>>> [CAUTION: External Email]
>>>
>>> Not necessary on soc15 and breaks driver reload on server cards.
>>>
>>> Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
>>> Cc: stable at vger.kernel.org
>>> ---
>>>    drivers/gpu/drm/amd/amdgpu/soc15.c | 5 +++++
>>>    1 file changed, 5 insertions(+)
>>>
>>> diff --git a/drivers/gpu/drm/amd/amdgpu/soc15.c b/drivers/gpu/drm/amd/amdgpu/soc15.c
>>> index 32dc5a128249..78bd4fc07bab 100644
>>> --- a/drivers/gpu/drm/amd/amdgpu/soc15.c
>>> +++ b/drivers/gpu/drm/amd/amdgpu/soc15.c
>>> @@ -761,6 +761,11 @@ static bool soc15_need_reset_on_init(struct amdgpu_device *adev)
>>>    {
>>>           u32 sol_reg;
>>>
>>> +       /* Just return false for soc15 GPUs.  Reset does not seem to
>>> +        * be necessary.
>>> +        */
>>> +       return false;
>>> +
>>>           if (adev->flags & AMD_IS_APU)
>>>                   return false;
>> Should remove the rest of code in this function and sol_reg as well?
>> Simply return false?
> I was thinking we'd leave it in place for now in case we need to
> re-enable it for something else in the future, but I guess we can just
> revert the change if need be.  I don't have a strong opinion either
> way.
>
> Alex
>
>>> --
>>> 2.20.1
>>>
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