linux-kernel - Re: Backlight device class redesign

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Sat, 28 Nov 2009 15:21:27 -0200
From:	Henrique de Moraes Holschuh <hmh@....eng.br>
To:	Rafa?? Mi??ecki <zajec5@...il.com>
Cc:	Linux ACPI <linux-acpi@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Richard Purdie <rpurdie@...ys.net>
Subject: Re: Backlight device class redesign

On Sat, 28 Nov 2009, Rafa?? Mi??ecki wrote:
> > Meanwhile, I'd like a LOT to know how I could parent the backlight device I
> > export in a platform driver to the correct PCI or ACPI device for the main
> > GPU...
> 
> Is actually "parent" used for something? I can see it used in many
> modules, but not sure where we use that pointer (if we do).

For one, you get symlinks in sysfs, which would let userspace know what
backlight is related to what PCI/video/whatever device.

-- 
  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/