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From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
To: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Cc: Linux-ALSA <alsa-devel@alsa-project.org>,
	Mark Brown <broonie@kernel.org>
Subject: Re: [alsa-devel] [PATCH 04/21] ASoC: soc-core: rename soc_init_dai_link() to soc_dai_link_sanity_check()
Date: Fri, 11 Oct 2019 08:38:12 -0500
Message-ID: <ea00b4be-6adc-356d-68a7-14419fc8cb2c@linux.intel.com> (raw)
In-Reply-To: <87r23kw02g.wl-kuninori.morimoto.gx@renesas.com>



On 10/10/19 8:19 PM, Kuninori Morimoto wrote:
> 
> Hi Pierre-Louis
> 
>>> -	for_each_card_prelinks(card, i, dai_link) {
>>> -		ret = soc_init_dai_link(card, dai_link);
>>> -		if (ret) {
>>> -			dev_err(card->dev, "ASoC: failed to init link %s: %d\n",
>>> -				dai_link->name, ret);
>>> -			mutex_unlock(&client_mutex);
>>> -			return ret;
>>> -		}
>>> -	}
>>
>> This part is difficult to understand.
>>
>> There were two calls to soc_init_dai_link(), here and [2] below.
>> Your patch removes the first call and the for loop, is this
>> intentional and needed?
> 
> soc_init_dai_link() is just sanity_check now.
> In my understanding, it is needed before soc_bind_dai_link().
> 
> Current code is like below.
> (1) and (2) are for care prelink:ed dai_link.
> (A) and (B) are for topology added new dai_link.
> and
> (1) is for (2)
> (A) is for (B)
> 
> 	int snd_soc_instantiate_card()
> 	{
> 		for_each_card_prelinks(...) {
> (1)			ret = soc_init_dai_link(...);
> 			...
> 		}
> 		...
> 		for_each_card_prelinks(...) {
> (2)			ret = soc_bind_dai_link(...);
> 			...
> 		}
> 		...
> 		for_each_card_links(...) {
> 			...
> (A)			ret = soc_init_dai_link(...);
> 			...
> (B)			ret = soc_bind_dai_link(...);
> 		}
> 	}
> 
> It is very confusing/verbose code for me.
> It can be more simple if we can call soc_init_dai_link()
> from soc_bind_dai_link().

ok, the explanations help, maye you can add them to the commit message 
to help explain the intent, e.g.

  Current code is like below.
  (1) and (2) are for care prelink:ed dai_link.
  (A) and (B) are for topology added new dai_link.
  and
  (1) is for (2)
  (A) is for (B)


  		for_each_card_prelinks(...) {
  (2)		 	int snd_soc_instantiate_card()
  	{
  		for_each_card_prelinks(...) {
  (1)			ret = soc_init_dai_link(...);
  			...
  		}
  		...	ret = soc_bind_dai_link(...);
  			...
  		}
  		...
  		for_each_card_links(...) {
  			...
  (A)			ret = soc_init_dai_link(...);
  			...
  (B)			ret = soc_bind_dai_link(...);
  		}


and the new code keeps the same flow/steps but collapses the two calls 
into one

  		for_each_card_prelinks(...) {
  (2)		 	int snd_soc_instantiate_card()
  	{
  		for_each_card_prelinks(...) {
  (1)			ret = soc_bind_dai_link(...);
  			...
  		}
  		...
  		for_each_card_links(...) {
  			
(A) (B)			ret = soc_bind_dai_link(...);
  		}

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Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-09  4:29 [alsa-devel] [PATCH 00/21] ASoC: soc-core cleanup - step 4 Kuninori Morimoto
2019-10-09  4:29 ` [alsa-devel] [PATCH 01/21] ASoC: soc-core: remove for_each_rtdcom_safe() Kuninori Morimoto
2019-10-09  4:29 ` [alsa-devel] [PATCH 02/21] ASoC: soc-core: add for_each_rtd_components() and replace Kuninori Morimoto
2019-10-09  4:30 ` [alsa-devel] [PATCH 03/21] ASoC: soc-core: move soc_init_dai_link() Kuninori Morimoto
2019-10-09  4:30 ` [alsa-devel] [PATCH 04/21] ASoC: soc-core: rename soc_init_dai_link() to soc_dai_link_sanity_check() Kuninori Morimoto
2019-10-10 14:17   ` Pierre-Louis Bossart
2019-10-11  1:19     ` Kuninori Morimoto
2019-10-11 13:38       ` Pierre-Louis Bossart [this message]
2019-10-09  4:30 ` [alsa-devel] [PATCH 05/21] ASoC: soc-core: remove duplicated soc_is_dai_link_bound() Kuninori Morimoto
2019-10-10 15:09   ` Pierre-Louis Bossart
2019-10-09  4:30 ` [alsa-devel] [PATCH 06/21] ASoC: soc-core: call soc_bind_dai_link() under snd_soc_add_dai_link() Kuninori Morimoto
2019-10-09  4:30 ` [alsa-devel] [PATCH 07/21] ASoC: soc-core: add soc_unbind_dai_link() Kuninori Morimoto
2019-10-09  4:30 ` [alsa-devel] [PATCH 08/21] ASoC: soc-core: snd_soc_unbind_card() cleanup Kuninori Morimoto
2019-10-09  4:30 ` [alsa-devel] [PATCH 09/21] ASoC: soc-core: remove unneeded snd_soc_tplg_component_remove() Kuninori Morimoto
2019-10-10 15:09   ` Pierre-Louis Bossart
2019-10-11  1:30     ` Kuninori Morimoto
2019-10-11 13:40       ` Pierre-Louis Bossart
2019-10-09  4:30 ` [alsa-devel] [PATCH 10/21] ASoC: soc-core: move snd_soc_lookup_component() Kuninori Morimoto
2019-10-09  4:30 ` [alsa-devel] [PATCH 11/21] ASoC: soc-core: add snd_soc_del_component() Kuninori Morimoto
2019-10-10 15:16   ` Pierre-Louis Bossart
2019-10-11  1:35     ` Kuninori Morimoto
2019-10-09  4:30 ` [alsa-devel] [PATCH 12/21] ASoC: soc-core: use snd_soc_lookup_component() at snd_soc_unregister_component() Kuninori Morimoto
2019-10-10 15:19   ` Pierre-Louis Bossart
2019-10-11  1:38     ` Kuninori Morimoto
2019-10-09  4:30 ` [alsa-devel] [PATCH 13/21] ASoC: soc-core: move snd_soc_register_dai() Kuninori Morimoto
2019-10-09  4:30 ` [alsa-devel] [PATCH 14/21] ASoC: soc-core: have legacy_dai_naming at snd_soc_register_dai() Kuninori Morimoto
2019-10-10 15:26   ` Pierre-Louis Bossart
2019-10-11  1:07     ` Kuninori Morimoto
2019-10-11 13:43       ` Pierre-Louis Bossart
2019-10-09  4:30 ` [alsa-devel] [PATCH 15/21] ASoC: soc-core: move snd_soc_unregister_dais() Kuninori Morimoto
2019-10-09  4:31 ` [alsa-devel] [PATCH 16/21] ASoC: soc-core: add snd_soc_unregister_dai() Kuninori Morimoto
2019-10-09  4:31 ` [alsa-devel] [PATCH 17/21] ASoC: soc-core: don't call snd_soc_dapm_new_dai_widgets() at snd_soc_register_dai() Kuninori Morimoto
2019-10-09  4:31 ` [alsa-devel] [PATCH 18/21] ASoC: soc-core: use mutex_lock() at snd_soc_add_component() Kuninori Morimoto
2019-10-10 15:29   ` Pierre-Louis Bossart
2019-10-09  4:31 ` [alsa-devel] [PATCH 19/21] ASoC: soc-core: call snd_soc_register_dai() from snd_soc_register_dais() Kuninori Morimoto
2019-10-10 15:34   ` Pierre-Louis Bossart
2019-10-11  1:44     ` Kuninori Morimoto
2019-10-09  4:31 ` [alsa-devel] [PATCH 20/21] ASoC: soc-core: remove topology specific operation Kuninori Morimoto
2019-10-09  4:31 ` [alsa-devel] [PATCH 21/21] ASoC: soc.h: dobj is used only when SND_SOC_TOPOLOGY Kuninori Morimoto
2019-10-09 14:16 ` [alsa-devel] [PATCH 00/21] ASoC: soc-core cleanup - step 4 Pierre-Louis Bossart
2019-10-10 15:38 ` Pierre-Louis Bossart
2019-10-11  1:53   ` Kuninori Morimoto

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