linux-kernel - Re: [PATCH] swsmu/amdgpu_smu: Fix the wrong if-condition

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Date:   Thu, 24 Nov 2022 21:23:11 -0500
From:   Luben Tuikov <luben.tuikov@....com>
To:     "Quan, Evan" <Evan.Quan@....com>,
        Yu Songping <yusongping@...wei.com>,
        "airlied@...il.com" <airlied@...il.com>,
        "daniel@...ll.ch" <daniel@...ll.ch>
Cc:     "amd-gfx@...ts.freedesktop.org" <amd-gfx@...ts.freedesktop.org>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] swsmu/amdgpu_smu: Fix the wrong if-condition

Applied!

Thanks,
Luben

On 2022-11-24 05:10, Quan, Evan wrote:
> [AMD Official Use Only - General]
> 
> Reviewed-by: Evan Quan <evan.quan@....com>
> 
>> -----Original Message-----
>> From: amd-gfx <amd-gfx-bounces@...ts.freedesktop.org> On Behalf Of Yu
>> Songping
>> Sent: Thursday, November 24, 2022 9:53 AM
>> To: airlied@...il.com; daniel@...ll.ch
>> Cc: dri-devel@...ts.freedesktop.org; amd-gfx@...ts.freedesktop.org; linux-
>> kernel@...r.kernel.org
>> Subject: [PATCH] swsmu/amdgpu_smu: Fix the wrong if-condition
>>
>> The logical operator '&&' will make
>> smu->ppt_funcs->set_gfx_power_up_by_imu segment fault when
>> ppt_funcs is
>> smu->NULL.
>>
>> Signed-off-by: Yu Songping <yusongping@...wei.com>
>> ---
>>  drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
>> b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
>> index b880f4d7d67e..1cb728b0b7ee 100644
>> --- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
>> +++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
>> @@ -161,7 +161,7 @@ int smu_get_dpm_freq_range(struct smu_context
>> *smu,
>>
>>  int smu_set_gfx_power_up_by_imu(struct smu_context *smu)  {
>> -     if (!smu->ppt_funcs && !smu->ppt_funcs-
>>> set_gfx_power_up_by_imu)
>> +     if (!smu->ppt_funcs || !smu->ppt_funcs-
>>> set_gfx_power_up_by_imu)
>>               return -EOPNOTSUPP;
>>
>>       return smu->ppt_funcs->set_gfx_power_up_by_imu(smu);
>> --
>> 2.17.1