linux-kernel - Re: Re: [PATCH v6 11/18] input: Add initial support for TWL6040 vibrator

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Message-ID: <9447778.OLKFu0QH6G@barack>
Date:	Wed, 22 Jun 2011 14:37:05 +0300
From:	Péter Ujfalusi <peter.ujfalusi@...com>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
CC:	"Girdwood, Liam" <lrg@...com>, Tony Lindgren <tony@...mide.com>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	"linux-input@...r.kernel.org" <linux-input@...r.kernel.org>,
	"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
	"Lopez Cruz, Misael" <misael.lopez@...com>,
	Tejun Heo <tj@...nel.org>
Subject: Re: Re: [PATCH v6 11/18] input: Add initial support for TWL6040 vibrator

Hello Dmitry,

On Tuesday 21 June 2011 22:32:01 Dmitry Torokhov wrote:
> On Tue, Jun 21, 2011 at 04:39:09PM +0300, Peter Ujfalusi wrote:
> > From: Misael Lopez Cruz <misael.lopez@...com>
> > 
> > Add twl6040_vibra as a child of MFD device twl6040_codec. This
> > implementation covers the PCM-to-PWM mode of TWL6040 vibrator
> > module.
> > 
> > Signed-off-by: Misael Lopez Cruz <misael.lopez@...com>
> > Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...com>
> > CC: Tejun Heo <tj@...nel.org>
> 
> Peter,
> 
> As Tejun mentioned, there is no difference between having a "private"
> workqueue created with alloc_workqueue() with default parameters and
> using system-wide workqueue. Therefore please use system-wide one. If
> your use shows that you indeed need high-priority workqueue it can be
> added later.

I have replaced the singlethreaded wq with the call suggested by Tejun:
https://lkml.org/lkml/2011/6/17/99

If this is a problem, I can rework this, and remove the code, which is not 
going to be needed, when the system_wq is in use, but I would like to keep the 
alloc_workqueue way, since it is going to be easier for us to experiment with 
parameters, if we face with issues.
 
> Otherwise:
> 
>         Acked-by: Dmitry Torokhov <dtor@...l.ru>
> 
> Please feel free to merge this code with the rest of TWL6040 patches
> (presumably throgh Samuel's MFD tree).

Thank you,
Péter
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