linux-kernel - Re: Re: Re: Re: Re: Re: [PATCH v4 11/18] input: Add initial support for TWL6040 vibrator

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Message-ID: <5476342.2jZLF0UGcI@barack>
Date:	Thu, 16 Jun 2011 14:13:59 +0300
From:	Péter Ujfalusi <peter.ujfalusi@...com>
To:	Tejun Heo <tj@...nel.org>
CC:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	"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>
Subject: Re: Re: Re: Re: Re: Re: [PATCH v4 11/18] input: Add initial support for TWL6040 vibrator

On Wednesday 15 June 2011 10:23:01 Tejun Heo wrote:
> On Wed, Jun 15, 2011 at 10:18:58AM +0200, Tejun Heo wrote:
> > No human being can feel 120usec difference and I can't see how using
> > HIGHPRI is justified here (which is what the code is doing
> > _accidentally_ by using singlethread_workqueue).
> 
> Ooh, one more thing, and even if you insist on using HIGHPRI (please
> don't), you don't need to create workqueue for each device.  You can
> just create one for the whole driver in init and destroy it from exit.
> What matters is the HIGHPRI attribute of the workqueue.  The number of
> workqueues is completely irrelevant.

Fair enough.
I'll move to create_workqueue.
If we later find issues with this (in a 'live' system), we can figure out a 
way to fix it.

Thank you for your time on this.
I'll make the changes accordingly.

Regards,
Péter
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