From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
To: Takashi Iwai <tiwai@suse.de>
Cc: alsa-devel@alsa-project.org,
Olivier Moysan <olivier.moysan@st.com>,
Alexandre Torgue <alexandre.torgue@st.com>,
kernel-janitors@vger.kernel.org,
Arnaud Pouliquen <arnaud.pouliquen@st.com>,
Liam Girdwood <lgirdwood@gmail.com>,
Mark Brown <broonie@kernel.org>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
Colin King <colin.king@canonical.com>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Jaya Kumar <jayakumar.alsa@gmail.com>
Subject: Re: [alsa-devel] [PATCH 9/9] ALSA: intel_hdmi: remove redundant variable cfg_val
Date: Mon, 6 Aug 2018 13:37:53 -0500 [thread overview]
Message-ID: <a5a408bc-cc58-946e-5b36-496548a6316f@linux.intel.com> (raw)
In-Reply-To: <s5hin4unyh0.wl-tiwai@suse.de>
On 8/1/18 6:00 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?
This val_bit is only there for debug/test, it should be set to one by
default and has nothing to do with the lpcm_id. This variable was set
even in patches before upstream submission and was never needed, I guess
it must be a 9-yr old issue. Good catch!
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
BTW looking at the structures in intel_hdmi_lpe_audio.h, the field
format:3 in audio_ch_status_0 is misleading at best, it should be the
emphasis if I look at the SPDIF/AES docs. It's not used but I'll have to
relook at all this when I find some time... We should really set the
registers to mirror what the aes_bits are, not just the non_audio and
clock accuracy fields.
next prev parent reply other threads:[~2018-08-06 18:38 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-01 10:47 [PATCH 0/9] ALSA: remove redundant variables Colin King
2018-08-01 10:47 ` [PATCH 1/9] ALSA: asihpi: remove redundant variable max_streams Colin King
2018-08-01 12:00 ` Takashi Iwai
2018-08-01 10:47 ` [PATCH 2/9] ALSA: cs5535audio: remove redundant pointer 'dma' Colin King
2018-08-01 12:01 ` Takashi Iwai
2018-08-01 10:47 ` [PATCH 3/9] ALSA: emu10k1: remove redundant variable attn Colin King
2018-08-01 12:01 ` Takashi Iwai
2018-08-01 10:47 ` [PATCH 4/9] ALSA: ens137x: remove redundant array pcm_devs Colin King
2018-08-01 12:01 ` Takashi Iwai
2018-08-01 10:47 ` [PATCH 5/9] ALSA: sonicvibes: remove redundant pointer 'dir' Colin King
2018-08-01 12:01 ` Takashi Iwai
2018-08-01 10:47 ` [PATCH 6/9] ASoC: nau8540: remove redundant variable osrate Colin King
2018-08-01 11:17 ` Applied "ASoC: nau8540: remove redundant variable osrate" to the asoc tree Mark Brown
2018-08-01 10:47 ` [PATCH 7/9] ASoC: stm32: remove redundant pointers 'priv' and 'rtd' Colin King
2018-08-01 11:16 ` Applied "ASoC: stm32: remove redundant pointers 'priv' and 'rtd'" to the asoc tree Mark Brown
2018-08-01 10:47 ` [PATCH 8/9] ALSA: usb-audio: remove redundant pointer 'urb' Colin King
2018-08-01 12:01 ` Takashi Iwai
2018-08-01 10:47 ` [PATCH 9/9] ALSA: intel_hdmi: remove redundant variable cfg_val Colin King
2018-08-01 11:00 ` Takashi Iwai
2018-08-01 14:55 ` [alsa-devel] " Pierre-Louis Bossart
2018-08-06 18:37 ` Pierre-Louis Bossart [this message]
2018-08-06 19:37 ` Takashi Iwai
2018-08-06 19:59 ` Pierre-Louis Bossart
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