linux-kernel - Re: [alsa-devel] [PATCH v2 -next] ASoC: Intel: Haswell: Remove set but not used variable 'stage

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Date:   Thu, 18 Apr 2019 07:54:16 -0500
From:   Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
To:     Yue Haibing <yuehaibing@...wei.com>,
        liam.r.girdwood@...ux.intel.com, yang.jie@...ux.intel.com,
        broonie@...nel.org, perex@...ex.cz, tiwai@...e.com
Cc:     linux-kernel@...r.kernel.org, alsa-devel@...a-project.org
Subject: Re: [alsa-devel] [PATCH v2 -next] ASoC: Intel: Haswell: Remove set
 but not used variable 'stage_type'

On 4/17/19 9:48 PM, 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")
> 
> Signed-off-by: YueHaibing <yuehaibing@...wei.com>

Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>

Thanks!

> ---
> v2: also remove the variable declaration and the static inline mst_get_stage_type
> ---
>   sound/soc/intel/haswell/sst-haswell-ipc.c | 8 +-------
>   1 file changed, 1 insertion(+), 7 deletions(-)
> 
> diff --git a/sound/soc/intel/haswell/sst-haswell-ipc.c b/sound/soc/intel/haswell/sst-haswell-ipc.c
> index 31fcdf12..74acf9c 100644
> --- a/sound/soc/intel/haswell/sst-haswell-ipc.c
> +++ b/sound/soc/intel/haswell/sst-haswell-ipc.c
> @@ -345,11 +345,6 @@ static inline u32 msg_get_stream_type(u32 msg)
>   	return (msg & IPC_STR_TYPE_MASK) >>  IPC_STR_TYPE_SHIFT;
>   }
>   
> -static inline u32 msg_get_stage_type(u32 msg)
> -{
> -	return (msg & IPC_STG_TYPE_MASK) >>  IPC_STG_TYPE_SHIFT;
> -}
> -
>   static inline u32 msg_get_stream_id(u32 msg)
>   {
>   	return (msg & IPC_STR_ID_MASK) >>  IPC_STR_ID_SHIFT;
> @@ -666,13 +661,12 @@ static int hsw_module_message(struct sst_hsw *hsw, u32 header)
>   
>   static int hsw_stream_message(struct sst_hsw *hsw, u32 header)
>   {
> -	u32 stream_msg, stream_id, stage_type;
> +	u32 stream_msg, stream_id;
>   	struct sst_hsw_stream *stream;
>   	int handled = 0;
>   
>   	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)
>