linux-kernel - Re: [PATCH 0/3] firmware: Fix usermodehelper deadlock at shutdown

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Message-ID: <CACVXFVPwXtD8uO-L6xhYC8j1B3XMVKQSDd=tMskgAvGQ=dNrZw@mail.gmail.com>
Date:	Thu, 9 May 2013 00:07:17 +0800
From:	Ming Lei <ming.lei@...onical.com>
To:	Takashi Iwai <tiwai@...e.de>
Cc:	linux-kernel@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH 0/3] firmware: Fix usermodehelper deadlock at shutdown

Hi Takashi,

Sorry for not CC list.

On Wed, May 8, 2013 at 2:56 PM, Takashi Iwai <tiwai@...e.de> wrote:
> Hi,
>
> this is a series of patches for the issue we faced in the firmware
> loader code during debugging the problem with dell_rbu driver with
> 3.9 kernel.
>
> The original problem was that the shutdown gets stuck when DELL BIOS
> update is performed.  This turned out to be a problem in the firmware
> loader.  Although the reason of dell_rbu driver breakage is still

Sorry, from these patchset, I can't see why it is a problem in firmware.

> unclear, we should fix the firmware loader side, at least, not to
> stall during shutdown.

Firstly you need to describe what/why is the stall? In fact, firmware
loading can't stall forever and it will timeout, but the current 60sec
timeout might be too long.

Thanks,
--
Ming Lei
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