linux-kernel - Re: [alsa-devel] [PATCH 07/14] soundwire: add initial definitions for sdw_master

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Date:   Fri, 8 Nov 2019 08:41:58 -0600
From:   Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
To:     Vinod Koul <vkoul@...nel.org>
Cc:     alsa-devel@...a-project.org, tiwai@...e.de,
        gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
        Ranjani Sridharan <ranjani.sridharan@...ux.intel.com>,
        broonie@...nel.org, srinivas.kandagatla@...aro.org,
        jank@...ence.com, slawomir.blauciak@...el.com,
        Sanyog Kale <sanyog.r.kale@...el.com>,
        Bard liao <yung-chuan.liao@...ux.intel.com>,
        Rander Wang <rander.wang@...ux.intel.com>
Subject: Re: [alsa-devel] [PATCH 07/14] soundwire: add initial definitions for
 sdw_master_device



On 11/7/19 10:04 PM, Vinod Koul wrote:
> On 04-11-19, 08:42, Pierre-Louis Bossart wrote:
>>
>>
>> On 11/3/19 1:30 AM, Vinod Koul wrote:
>>> On 23-10-19, 16:28, Pierre-Louis Bossart wrote:
>>>> Since we want an explicit support for the SoundWire Master device, add
>>>> the definitions, following the Grey Bus example.
>>>>
>>>> Open: do we need to set a variable when dealing with the master uevent?
>>>
>>> I dont think we want that or we need that!
>>
>> In GreyBus there are events and variables set, not sure what they were used
>> for. The code works without setting an event, but we'd need to make a
>> conscious design decision, and I am not too sure what usersace would use the
>> informatio for.
>>
>>>
>>> And to prevent that rather than adding a variable, can you please
>>> modify the device_type and use separate ones for master_device and
>>> slave_device
>>
>> sorry, I don't get the comment. There is only already a different device
>> type
>>
>>
>> struct bus_type sdw_bus_type = {
>> 	.name = "soundwire",
>> 	.match = sdw_bus_match,
>> 	.uevent = sdw_uevent,
> 
> We can remove this
> 
>> };
>>
>> struct device_type sdw_slave_type = {
>> 	.name =		"sdw_slave",
>> 	.release =	sdw_slave_release,
> 
> Add here:
> 
>          uevent = sdw_uevent,
> 
>> };
>>
>> struct device_type sdw_md_type = {
>> 	.name =		"soundwire_master",
>> 	.release =	sdw_md_release,
>> };
> 
> And not have here!
> 
> Problem solved!

I will give it a try but I don't know what the 'problem' was.
The code works as is, and btw you are commenting on the wrong version of 
the series, v2 was sent yesterday.