linux-kernel - Re: [alsa-devel] [PATCH -next] ASoC: Intel: Haswell: Remove set but not used variable 'stage

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Message-ID: <48184039-4c08-ed17-c933-3b697e4aac08@huawei.com>
Date:   Thu, 18 Apr 2019 09:25:17 +0800
From:   YueHaibing <yuehaibing@...wei.com>
To:     Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        <liam.r.girdwood@...ux.intel.com>, <yang.jie@...ux.intel.com>,
        <broonie@...nel.org>, <perex@...ex.cz>, <tiwai@...e.com>
CC:     <alsa-devel@...a-project.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [alsa-devel] [PATCH -next] ASoC: Intel: Haswell: Remove set but
 not used variable 'stage_type'

On 2019/4/18 1:41, Pierre-Louis Bossart wrote:
> On 4/17/19 10:11 AM, Yue Haibing wrote:
>> From: YueHaibing <yuehaibing@...wei.com>
>>
>> Fixes gcc '-Wunused-but-set-variable' warning:
>>
>> sound/soc/intel/haswell/sst-haswell-ipc.c: In function 'hsw_stream_message':
>> sound/soc/intel/haswell/sst-haswell-ipc.c:669:29: warning: variable 'stage_type' set but not used [-Wunused-but-set-variable]
>>
>> It is never used since introduction in
>> commit ba57f68235cf ("ASoC: Intel: create haswell folder and move haswell platform files in")
> 
> Thanks for the patch.
> 
> I think you could go further in the cleanup and remove both the variable declaration and the static inline mst_get_stage_type that will also be useless as a consequence of this assignment removal.

You are right.
> 
> Care to send a v2?

Sure, will do that,thanks!
> 
>>
>> Signed-off-by: YueHaibing <yuehaibing@...wei.com>
>> ---
>>   sound/soc/intel/haswell/sst-haswell-ipc.c | 1 -
>>   1 file changed, 1 deletion(-)
>>
>> diff --git a/sound/soc/intel/haswell/sst-haswell-ipc.c b/sound/soc/intel/haswell/sst-haswell-ipc.c
>> index 31fcdf12..4d3de99 100644
>> --- a/sound/soc/intel/haswell/sst-haswell-ipc.c
>> +++ b/sound/soc/intel/haswell/sst-haswell-ipc.c
>> @@ -672,7 +672,6 @@ static int hsw_stream_message(struct sst_hsw *hsw, u32 header)
>>         stream_msg = msg_get_stream_type(header);
>>       stream_id = msg_get_stream_id(header);
>> -    stage_type = msg_get_stage_type(header);
>>         stream = get_stream_by_id(hsw, stream_id);
>>       if (stream == NULL)
>>
> 
> 
> .
>