Re: [alsa-devel] [PATCH 9/9] ALSA: intel_hdmi: remove redundant variable cfg_val

Pierre-Louis Bossart
2018-08-01T14:55:02Z

On 8/1/18 4:00 AM, Takashi Iwai wrote:
> On Wed, 01 Aug 2018 12:47:42 +0200,
> Colin King wrote:
>>
>> From: Colin Ian King <colin.king@canonical.com>
>>
>> Variable cfg_val is being assigned but is never used hence it is
>> redundant and can be removed.
>>
>> Cleans up clang warning:
>> warning: variable 'cfg_val' set but not used [-Wunused-but-set-variable]
>>
>> Signed-off-by: Colin Ian King <colin.king@canonical.com>
>> ---
>> sound/x86/intel_hdmi_audio.c | 2 --
>> 1 file changed, 2 deletions(-)
>>
>> diff --git a/sound/x86/intel_hdmi_audio.c b/sound/x86/intel_hdmi_audio.c
>> index edc9f5a34eff..fa7dca5a68c8 100644
>> --- a/sound/x86/intel_hdmi_audio.c
>> +++ b/sound/x86/intel_hdmi_audio.c
>> @@ -290,7 +290,6 @@ static void had_reset_audio(struct snd_intelhad *intelhaddata)
>> static int had_prog_status_reg(struct snd_pcm_substream *substream,
>> struct snd_intelhad *intelhaddata)
>> {
>> - union aud_cfg cfg_val = {.regval = 0};
>> union aud_ch_status_0 ch_stat0 = {.regval = 0};
>> union aud_ch_status_1 ch_stat1 = {.regval = 0};
>>
>> @@ -298,7 +297,6 @@ static int had_prog_status_reg(struct snd_pcm_substream *substream,
>> IEC958_AES0_NONAUDIO) >> 1;
>> ch_stat0.regx.clk_acc = (intelhaddata->aes_bits &
>> IEC958_AES3_CON_CLOCK) >> 4;
>> - cfg_val.regx.val_bit = ch_stat0.regx.lpcm_id;
>
> Actually this made me wonder what is the definition of val_bit.
> It seems always 1 in the current code after the commit 964ca8083c02.
> Pierre?

I'll look into it, give me a couple of days. I vaguely remember this is
the AES validity bit but I am not sure why it's set with a pcm id, looks
like a mixup.