linux-kernel - Re: [PATCHv4] INPUT: Route keyboard LEDs through the generic LEDs layer.

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Message-Id: <20141219144641.3a549feb1ee5f2b9400f62cb@linux-foundation.org>
Date:	Fri, 19 Dec 2014 14:46:41 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Samuel Thibault <samuel.thibault@...-lyon.org>
Cc:	Pavel Machek <pavel@....cz>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	David Herrmann <dh.herrmann@...il.com>, jslaby@...e.cz,
	Bryan Wu <cooloney@...il.com>, rpurdie@...ys.net,
	linux-kernel@...r.kernel.org, Evan Broder <evan@...oder.net>,
	Arnaud Patard <arnaud.patard@...-net.org>,
	Peter Korsgaard <jacmet@...site.dk>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Rob Clark <robdclark@...il.com>,
	Niels de Vos <devos@...oraproject.org>,
	linux-arm-kernel@...ts.infradead.org, blogic@...nwrt.org,
	Pali Rohár <pali.rohar@...il.com>
Subject: Re: [PATCHv4] INPUT: Route keyboard LEDs through the generic LEDs
 layer.

On Wed, 10 Dec 2014 02:02:14 +0100 Samuel Thibault <samuel.thibault@...-lyon.org> wrote:

> This permits to reassign keyboard LEDs to something else than keyboard "leds"
> state, by adding keyboard led and modifier triggers connected to a series
> of VT input LEDs, themselves connected to VT input triggers, which
> per-input device LEDs use by default.  Userland can thus easily change the LED
> behavior of (a priori) all input devices, or of particular input devices.
> 
> This also permits to fix #7063 from userland by using a modifier to implement
> proper CapsLock behavior and have the keyboard caps lock led show that modifier
> state.
> 
> [ebroder@...afive.com: Rebased to 3.2-rc1 or so, cleaned up some includes, and fixed some constants]
> [blogic@...nwrt.org: CONFIG_INPUT_LEDS stubs should be static inline]
> [akpm@...ux-foundation.org: remove unneeded `extern', fix comment layout]
> Signed-off-by: Samuel Thibault <samuel.thibault@...-lyon.org>
> Signed-off-by: Evan Broder <evan@...oder.net>
> Reviewed-by: David Herrmann <dh.herrmann@...il.com>
> Tested-by: Pavel Machek <pavel@....cz>
> Acked-by: Peter Korsgaard <jacmet@...site.dk>
> Signed-off-by: John Crispin <blogic@...nwrt.org>
> Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
> ---
> Changed in this version:
> - Use kcalloc instead of kzalloc
> - to avoid any mutex order violation, defer LED update into a work callback.

Confused.  This patch is identical to the one that's presently in -mm.
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