linux-kernel - Re: [PATCH 4/8] minnowboard: Add base platform driver for the MinnowBoard

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 for Android: free password hash cracker in your pocket

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

Date:	Mon, 22 Jul 2013 01:09:55 +0100
From:	Grant Likely <grant.likely@...aro.org>
To:	Mark Brown <broonie@...nel.org>
Cc:	Darren Hart <dvhart@...ux.intel.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	"peter.p.waskiewicz.jr" <peter.p.waskiewicz.jr@...el.com>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	danders <danders@...cuitco.com>,
	"vishal.l.verma" <vishal.l.verma@...el.com>,
	Matthew Garrett <matthew.garrett@...ula.com>,
	Richard Purdie <richard.purdie@...uxfoundation.org>,
	platform-driver-x86 <platform-driver-x86@...r.kernel.org>
Subject: Re: [PATCH 4/8] minnowboard: Add base platform driver for the MinnowBoard

On Thu, Jul 4, 2013 at 5:26 PM, Mark Brown <broonie@...nel.org> wrote:
> On Thu, Jun 27, 2013 at 10:43:38PM -0700, Darren Hart wrote:
>
>> minnow_hwid() just returns an int that the minnowboard platform driver
>> read from the GPIO. This seems like a proper abstraction to me. Do you
>> object to this one as well?
>
> We should really have a subsystem for this too - the general idea idea
> of identifying boards, fit options and so on by looking at things like
> GPIOs or numbers in flash is really common.

And yet this is a platform with ACPI. I would expect the ACPI to
identify the board, not a custom driver. The newest ACPI spec adds a
lot of nice useful things like GPIO and SPI bindings. Talk to Al Stone
about the progress his team has made on adding GPIO support to ACPICA.

This driver shouldn't be merged into mainline. Keep it as an
out-of-tree patch until the proper solution is implemented. That
shouldn't be too onerous since we now have available not one, but two
mechanisms for describing exactly what you want to do; ACPI or FDT.

g.
--
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/