linux-kernel - Re: [alsa-devel] [PATCH 2/6] soundwire: stream: update state machine and add state checks

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Date:   Fri, 10 Jan 2020 10:30:29 -0600
From:   Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
To:     Vinod Koul <vkoul@...nel.org>
Cc:     alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        tiwai@...e.de, broonie@...nel.org, gregkh@...uxfoundation.org,
        jank@...ence.com, srinivas.kandagatla@...aro.org,
        slawomir.blauciak@...el.com,
        Bard liao <yung-chuan.liao@...ux.intel.com>,
        Rander Wang <rander.wang@...ux.intel.com>,
        Ranjani Sridharan <ranjani.sridharan@...ux.intel.com>,
        Sanyog Kale <sanyog.r.kale@...el.com>,
        Jonathan Corbet <corbet@....net>,
        "open list:DOCUMENTATION" <linux-doc@...r.kernel.org>
Subject: Re: [alsa-devel] [PATCH 2/6] soundwire: stream: update state machine
 and add state checks


>> -  int sdw_prepare_stream(struct sdw_stream_runtime * stream);
>> +  int sdw_prepare_stream(struct sdw_stream_runtime * stream, bool resume);
> 
> so what does the additional argument of resume do..?
> 
>> diff --git a/drivers/soundwire/stream.c b/drivers/soundwire/stream.c
>> index 178ae92b8cc1..6aa0b5d370c0 100644
>> --- a/drivers/soundwire/stream.c
>> +++ b/drivers/soundwire/stream.c
>> @@ -1553,8 +1553,18 @@ int sdw_prepare_stream(struct sdw_stream_runtime *stream)
> 
> and it is not modified here, so is the doc correct or this..?

the doc is correct and the code is updated in

[PATCH 4/6] soundwire: stream: do not update parameters during 
DISABLED-PREPARED transition