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SubjectRe: Warning: check cp_fw_version and update it to realize GRBM requires 1-cycle delay in cp firmware
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On 2019-12-26 5:53 p.m., Alex Deucher wrote:
> On Thu, Dec 26, 2019 at 5:11 AM Paul Menzel
>>
>>> [ 13.446975] [drm] Warning: check cp_fw_version and update it to realize GRBM requires 1-cycle delay in cp firmware
>>
>> Chang, it looks like you added that warning in commit 11c6108934.
>>
>>> drm/amdgpu: add warning for GRBM 1-cycle delay issue in gfx9
>>>
>>> It needs to add warning to update firmware in gfx9
>>> in case that firmware is too old to have function to
>>> realize dummy read in cp firmware.
>>
>> Unfortunately, it looks like you did not even check how the warning is
>> formatted (needless spaces), so I guess this was totally untested. Also,
>> what is that warning about, and what is the user supposed to do? I am
>> unable to find `cp_fw_version` in the source code at all.
>>
>
> The code looks fine. Not sure why it's rendering funny in your log.
> DRM_WARN_ONCE("Warning: check cp_fw_version and update
> it to realize \
> GRBM requires 1-cycle delay in cp firmware\n");

Looks like the leading spaces after the backslash are included in the
string. Something like this should be better:

DRM_WARN_ONCE("Warning: check cp_fw_version and update "
"GRBM requires 1-cycle delay in cp firmware\n");

(or maybe the intention was to put the second sentence on a new line?)


--
Earthling Michel Dänzer | https://redhat.com
Libre software enthusiast | Mesa and X developer

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