linux-kernel - Re: [PATCH] [64/99] Revert "iwlagn: Support new 5000 microcode."

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Date:	Thu, 28 Jul 2011 06:45:33 -0700
From:	"Guy, Wey-Yi" <wey-yi.w.guy@...el.com>
To:	Stanislaw Gruszka <sgruszka@...hat.com>
Cc:	Andi Kleen <andi@...stfloor.org>,
	"gregkh@...e.de" <gregkh@...e.de>,
	"herton.krzesinski@...onical.com" <herton.krzesinski@...onical.com>,
	"gengor@...too.org" <gengor@...too.org>,
	"Fry, Donald H" <donald.h.fry@...el.com>,
	"ak@...ux.intel.com" <ak@...ux.intel.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"stable@...nel.org" <stable@...nel.org>,
	"tim.bird@...sony.com" <tim.bird@...sony.com>
Subject: Re: [PATCH] [64/99] Revert "iwlagn: Support new 5000 microcode."

On Thu, 2011-07-28 at 01:24 -0700, Stanislaw Gruszka wrote:
> On Wed, Jul 27, 2011 at 02:49:03PM -0700, Andi Kleen wrote:
> > 2.6.35-longterm review patch.  If anyone has any objections, please let me know.
> > 
> > ------------------
> > This reverts commit 6f63415fc1b690cb50c2ad48ba6e9e6e88e271b4.
> > 
> > It turns out this is not what we want to have happen for the .32 and
> > .33-longterm kernels as it does not work properly at all.
> 
> Hmm, it does not work on .32 and .33 because they do not contain
> the commit (which 2.6.35 has):
> 
> commit dd7a2509b3a79b290730a9c6a784bf03fedabb9a
> Author: Johannes Berg <johannes.berg@...el.com>
> Date:   Wed Apr 28 23:33:10 2010 -0700
> 
>     iwlagn: implement loading a new firmware file type
> 
> > This was reported by Gentoo, Arch, and Canonical developers as causing
> > problems for their users:
> > 	https://bugs.archlinux.org/task/24302
> This is a bug about 2.6.32.
> 
> > 	http://bugs.gentoo.org/show_bug.cgi?id=359445
> This looks like problem when only 8.83.5 (v5) firmware is available
> on the system, but kernel is old and support only v2 version. This
> should be solved by providing both old 8.24.2 (v2) and new 8.83.5 (v5)
> firmware blobs in one package.
> 
> > 	https://bugs.launchpad.net/ubuntu/+source/linux/+bug/796336
> Also 2.6.32 case.
> 
> There could be reasons for this change, but I do not see them here.
> 
The -5 version of firmware has addition TLV information in the firmware
file which provide the firmware capabilities to the driver. it is
important feature starting from -5 version of firmware; and it require
driver to parsing the new file type.

just like Gruszka mention, please include 
commit dd7a2509b3a79b290730a9c6a784bf03fedabb9a


Thanks
 
Wey


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