linux-kernel - Re: [PATCH 00/46] staging: line6: drop MIDI state sysfs attrs

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Date:	Thu, 22 Nov 2012 21:08:55 +0100
From:	Stefan Hajnoczi <stefanha@...il.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	devel@...verdev.osuosl.org, Markus Grabner <grabner@....tugraz.at>,
	"line6linux-devel@...ts.sourceforge.net" 
	<line6linux-devel@...ts.sourceforge.net>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Laurent Navet <laurent_navet@...oo.com>
Subject: Re: [PATCH 00/46] staging: line6: drop MIDI state sysfs attrs

On Thu, Nov 22, 2012 at 8:58 PM, Greg Kroah-Hartman
<gregkh@...uxfoundation.org> wrote:
> On Thu, Nov 22, 2012 at 08:48:39PM +0100, Stefan Hajnoczi wrote:
>> Markus and I have discussed the MIDI processing that currently happens in the
>> line6 driver.  This stuff really belongs in userspace where a library or
>> utility can use ALSA MIDI APIs to control the device.  Moving MIDI processing
>> to userspace has several benefits:
>>
>> 1. The driver only handles PCM and MIDI I/O.  This means less kernel code.
>>
>> 2. A large number of sysfs attributes can be removed.  These attributes exposed
>>    MIDI state and driver code was necessary to sync and manage this state.
>>
>> 3. It's easier for userspace to control the device, try out new MIDI commands,
>>    etc when the driver acts as a dumb transport.
>>
>> This patch series removes the sysfs attributes and then removes the state
>> behind those attributes.  I have tried to make small incremental changes that
>> can be reviewed easily.
>
> Very nice, I'll queue these up on Monday, very good work, thanks so much
> for doing this.

Thanks!  I hope Markus has a chance to review and/or test these
changes first - he knows generally what I'm up too but should have the
final word on details.

Stefan
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