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

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Date:	Thu, 22 Nov 2012 11:58:40 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	Stefan Hajnoczi <stefanha@...il.com>
Cc:	devel@...verdev.osuosl.org, Markus Grabner <grabner@....tugraz.at>,
	line6linux-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org, laurent_navet@...oo.com
Subject: Re: [PATCH 00/46] staging: line6: drop MIDI state sysfs attrs

On Thu, Nov 22, 2012 at 08:48:39PM +0100, Stefan Hajnoczi wrote:
> Let's put the line6 staging driver on a diet for Thanksgiving! :)

Yeah!

> 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.

>  drivers/staging/line6/Kconfig       |  11 -
>  drivers/staging/line6/Makefile      |   2 -
>  drivers/staging/line6/control.c     | 995 ------------------------------------
>  drivers/staging/line6/control.h     | 195 -------
>  drivers/staging/line6/driver.c      |  20 -
>  drivers/staging/line6/dumprequest.c | 135 -----
>  drivers/staging/line6/dumprequest.h |  76 ---
>  drivers/staging/line6/midi.c        | 120 -----
>  drivers/staging/line6/midi.h        |  10 -
>  drivers/staging/line6/pod.c         | 846 +-----------------------------
>  drivers/staging/line6/pod.h         | 105 +---
>  drivers/staging/line6/variax.c      | 480 +----------------
>  drivers/staging/line6/variax.h      |  60 ---
>  13 files changed, 16 insertions(+), 3039 deletions(-)
>  delete mode 100644 drivers/staging/line6/control.c
>  delete mode 100644 drivers/staging/line6/control.h
>  delete mode 100644 drivers/staging/line6/dumprequest.c
>  delete mode 100644 drivers/staging/line6/dumprequest.h

I like seeing diffstats like that :)

greg k-h
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