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Subject: Re: [PATCH -next v2] drm/amdgpu: return 'ret' in amdgpu_pmu_init
To:     Joe Perches <joe@perches.com>, <airlied@linux.ie>,
        <daniel@ffwll.ch>, <alexander.deucher@amd.com>,
        <christian.koenig@amd.com>, <David1.Zhou@amd.com>,
        <dan.carpenter@oracle.com>, <julia.lawall@lip6.fr>
References: <20190622104318.GT28859@kadam>
 <20190622130527.182022-1-maowenan@huawei.com>
 <0ab82cdb0bec30e7e431f106f8e0e9d141491555.camel@perches.com>
CC:     <kernel-janitors@vger.kernel.org>, <amd-gfx@lists.freedesktop.org>,
        <linux-kernel@vger.kernel.org>, Jonathan Kim <jonathan.kim@amd.com>
From:   maowenan <maowenan@huawei.com>
Message-ID: <b468d765-bef7-70a8-9a14-bad0e6ed14df@huawei.com>
Date:   Mon, 24 Jun 2019 11:41:07 +0800
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On 2019/6/23 2:13, Joe Perches wrote:
> On Sat, 2019-06-22 at 21:05 +0800, Mao Wenan wrote:
>> There is one warning:
>> drivers/gpu/drm/amd/amdgpu/amdgpu_pmu.c: In function ‘amdgpu_pmu_init’:
>> drivers/gpu/drm/amd/amdgpu/amdgpu_pmu.c:249:6: warning: variable ‘ret’ set but not used [-Wunused-but-set-variable]
>>   int ret = 0;
> []
>>  v1->v2: change the subject for this patch; change the indenting when it calls init_pmu_by_type; use the value 'ret' in
>>  amdgpu_pmu_init().
> []
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pmu.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_pmu.c
> []
>> @@ -252,8 +252,8 @@ int amdgpu_pmu_init(struct amdgpu_device *adev)
>>  	case CHIP_VEGA20:
>>  		/* init df */
>>  		ret = init_pmu_by_type(adev, df_v3_6_attr_groups,
>> -				       "DF", "amdgpu_df", PERF_TYPE_AMDGPU_DF,
>> -				       DF_V3_6_MAX_COUNTERS);
>> +							   "DF", "amdgpu_df", PERF_TYPE_AMDGPU_DF,
>> +							   DF_V3_6_MAX_COUNTERS);
> 
> trivia:
> 
> The indentation change seems superfluous and
> appears to make the code harder to read.
> 
> You could also cc Jonathan Kim who wrote all of this.
I think this is just display issue in mail format. It is correct that in vi/vim.
The arguments are line up with '(' after my change.


@@ -252,8 +252,8 @@ int amdgpu_pmu_init(struct amdgpu_device *adev)$
 ^Icase CHIP_VEGA20:$
 ^I^I/* init df */$
 ^I^Iret = init_pmu_by_type(adev, df_v3_6_attr_groups,$
-^I^I^I^I       "DF", "amdgpu_df", PERF_TYPE_AMDGPU_DF,$
-^I^I^I^I       DF_V3_6_MAX_COUNTERS);$
+^I^I^I^I^I^I^I   "DF", "amdgpu_df", PERF_TYPE_AMDGPU_DF,$
+^I^I^I^I^I^I^I   DF_V3_6_MAX_COUNTERS);$
 $
 ^I^I/* other pmu types go here*/$
 ^I^Ibreak;$


> 
> 
> 
> .
>