Re: firmware: new "platform microcode" warning in v3.13-rc1+

From: Ming Lei
Date: Mon Dec 23 2013 - 20:15:21 EST


Hi,

On Mon, Dec 2, 2013 at 1:32 AM, Paul Bolle <pebolle@xxxxxxxxxx> wrote:
> 0) Booting v3.13-rc1 and v3.13-rc2 triggers two new warnings on an
> (outdated, I'm afraid) ThinkPad X41:
> [...]
> <6>[ 16.746119] libipw: 802.11 data/management/control stack, git-1.1.13
> <6>[ 16.746125] libipw: Copyright (C) 2004-2005 Intel Corporation <jketreno@xxxxxxxxxxxxxxx>
> <4>[ 16.761998] platform microcode: Direct firmware load failed with error -2
> <4>[ 16.762022] platform microcode: Falling back to user helper
> <6>[ 16.787885] ipw2200: Intel(R) PRO/Wireless 2200/2915 Network Driver, 1.2.2kmprq
> <6>[ 16.787895] ipw2200: Copyright(c) 2003-2006 Intel Corporation
> <6>[ 16.788741] ipw2200: Detected Intel PRO/Wireless 2915ABG Network Connection
> [...]
>
> (I've added the surrounding lines because they suggest this is about the
> firmware for that wireless device. Please note that this device appears
> to work no worse than it did under v3.12.)
>
> 1) These warnings can be traced back to commit 3e358ac2bb5b ("firmware:
> Be a bit more verbose about direct firmware loading failure").

Yes, the warning was introduced in the commit since Neil thought it
is needed.

>
> 2) Is there something I'm supposed to do to silence these warnings? If
> so, what would that be? If not, can these messages perhaps be downgraded
> to dev_info or dev_notice?

Currently the messages are dumped via dev_warn(), and it is a bit difficult
to make policy about the warning: sounds like Neil need them, and you
don't like them, :-)


Thanks,
--
Ming Lei
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