linux-kernel - Re: [PATCH] drm/msm/adreno: Drop WARN_ON from patchid lookup for new GPUs

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Date:   Mon, 23 Oct 2023 21:56:16 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Rob Clark <robdclark@...il.com>
Cc:     Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Sean Paul <sean@...rly.run>, David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        Rob Clark <robdclark@...omium.org>,
        linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Abel Vesa <abel.vesa@...aro.org>
Subject: Re: [PATCH] drm/msm/adreno: Drop WARN_ON from patchid lookup for new
 GPUs



On 10/23/23 21:42, Rob Clark wrote:
> On Mon, Oct 23, 2023 at 7:29 AM Konrad Dybcio <konrad.dybcio@...aro.org> wrote:
>>
>> New GPUs still use the lower 2 bytes of the chip id (in whatever form
>> it comes) to signify silicon revision. Drop the warning that makes it
>> sound as if that was unintended.
>>
>> Fixes: 90b593ce1c9e ("drm/msm/adreno: Switch to chip-id for identifying GPU")
>> Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
>> ---
>>   drivers/gpu/drm/msm/adreno/adreno_gpu.h | 5 -----
>>   1 file changed, 5 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.h b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
>> index 80b3f6312116..9a1ec42155fd 100644
>> --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.h
>> +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
>> @@ -203,11 +203,6 @@ struct adreno_platform_config {
>>
>>   static inline uint8_t adreno_patchid(const struct adreno_gpu *gpu)
>>   {
>> -       /* It is probably ok to assume legacy "adreno_rev" format
>> -        * for all a6xx devices, but probably best to limit this
>> -        * to older things.
>> -        */
>> -       WARN_ON_ONCE(gpu->info->family >= ADRENO_6XX_GEN1);
> 
> Maybe just change it to ADRENO_6XX_GEN4?
That also applies to 700

Konrad