linux-kernel - Re: [PATCH] video: backlight: Remove backlight sysfs uevent

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Date:	Wed, 20 Nov 2013 18:40:59 -0500
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	Henrique de Moraes Holschuh <hmh@....eng.br>
Cc:	Jingoo Han <jg1.han@...sung.com>,
	'Kyungmin Park' <kmpark@...radead.org>,
	'Henrique de Moraes Holschuh' <ibm-acpi@....eng.br>,
	linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	kay@...y.org, 'Richard Purdie' <rpurdie@...ys.net>,
	ibm-acpi-devel@...ts.sourceforge.net,
	platform-driver-x86@...r.kernel.org
Subject: Re: [PATCH] video: backlight: Remove backlight sysfs uevent

On Mon, 2013-11-11 at 22:56 -0200, Henrique de Moraes Holschuh wrote:
> On Tue, 12 Nov 2013, Jingoo Han wrote:
> > 'thinkpad_acpi.c' uses the 'BACKLIGHT_UPDATE_SYSFS'.
> > Henrique, can we remove it?
> 
> Can't you fix this by rate-limiting, or otherwise adding an attribute that
> backlight devices should set when they need to supress change events?

It looks like this is just to force synchronisation to sysfs when using
the /proc interface? In which case we should probably just kill
the /proc interface.

-- 
Matthew Garrett <matthew.garrett@...ula.com>

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