linux-kernel - Re: [PATCH -v2 00/16] PCI: Re-factor PCI's 'latency timer' setup

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Date:	Fri, 11 Nov 2011 09:59:30 -0800
From:	Jesse Barnes <jbarnes@...tuousgeek.org>
To:	Myron Stowe <myron.stowe@...hat.com>
Cc:	linux-pci@...r.kernel.org, linux@....linux.org.uk,
	vapier@...too.org, dhowells@...hat.com, ysato@...rs.sourceforge.jp,
	tony.luck@...el.com, fenghua.yu@...el.com, monstr@...str.eu,
	ralf@...ux-mips.org, benh@...nel.crashing.org, paulus@...ba.org,
	lethal@...ux-sh.org, davem@...emloft.net, cmetcalf@...era.com,
	gxt@...c.pku.edu.cn, tglx@...utronix.de, mingo@...hat.com,
	chris@...kel.net, linux-kernel@...r.kernel.org
Subject: Re: [PATCH -v2 00/16] PCI: Re-factor PCI's 'latency timer' setup

On Fri, 28 Oct 2011 15:47:26 -0600
Myron Stowe <myron.stowe@...hat.com> wrote:

> The 'latency timer' of PCI devices, both Type 0 and Type 1,
> is setup in architecture-specific code [see: pcibios_set_master()].
> There are two approaches being taken by all the architectures - check
> if the 'latency timer' is currently set between 16 and 255 and if not
> bring it within bounds, or, do nothing (and then there is the
> gratuitously different parisc implementation).
> 
> There is nothing architecture-specific about PCI's 'latency timer' so
> this patch pulls the setup functionality up into the PCI core by
> creating a generic 'pcibios_set_master()' function using the '__weak'
> attribute which can be used by all architectures as a default which,
> if necessary, can then be over-ridden by architecture-specific code.

I have acks from Chris, Ralf, and Mike.  Any other arch maintainers
want to ack or nack this before it goes into my -next branch?

Thanks,
-- 
Jesse Barnes, Intel Open Source Technology Center

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