linux-kernel - Re: [PATCH] PCI: MSI: Restore read_msi_msg_desc(); add get_cached_msi_msg

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Message-ID: <1353414988.4414.42.camel@deadeye.wl.decadent.org.uk>
Date:	Tue, 20 Nov 2012 12:36:28 +0000
From:	Ben Hutchings <bhutchings@...arflare.com>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
CC:	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	ppc-dev <linuxppc-dev@...ts.ozlabs.org>,
	LKML <linux-kernel@...r.kernel.org>,
	linux-pci <linux-pci@...r.kernel.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>
Subject: Re: [PATCH] PCI: MSI: Restore read_msi_msg_desc(); add
 get_cached_msi_msg_desc()

On Tue, 2012-11-20 at 18:20 +1100, Benjamin Herrenschmidt wrote:
> On Fri, 2010-07-23 at 14:56 +0100, Ben Hutchings wrote:
> > commit 2ca1af9aa3285c6a5f103ed31ad09f7399fc65d7 "PCI: MSI: Remove
> > unsafe and unnecessary hardware access" changed read_msi_msg_desc() to
> > return the last MSI message written instead of reading it from the
> > device, since it may be called while the device is in a reduced
> > power state.
> 
> Looks reasonable... Jesse ?
[...]

So reasonable that it was committed a couple of years ago!

Where did you dredge this from?

Ben.

-- 
Ben Hutchings, Staff Engineer, Solarflare
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.

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