From: jim owens <jowens@hp.com>
To: Will Newton <will.newton@gmail.com>
Cc: Linux Kernel list <linux-kernel@vger.kernel.org>
Subject: Re: Mounting sysfs early
Date: Fri, 19 Jun 2009 09:26:49 -0400 [thread overview]
Message-ID: <4A3B9219.3020803@hp.com> (raw)
In-Reply-To: <87a5b0800906190415o1c70b6basfde98269dbacd00e@mail.gmail.com>
Will Newton wrote:
> Hi all,
>
> I currently have a problem with a driver that loads firmware from
> userland. The boot process happens in this order:
>
> 1. Extract initramfs
> 2. Load drivers
> 3. Run init
>
> Unfortunately it appears that step 2 is calling the hotplug helper
> which tries to load firmware via sysfs, but sysfs is not mounted until
> I have run init so the driver fails to initialise. What is the
> recommended way to avoid this situation? Do I have to somehow build
> the firmware into the kernel or can I get sysfs mounted before drivers
> begin loading?
you did not say what distro and kernel, but I would expect
sysfs is mounted before step 2 by the intrd. this is what I
see in a rhel 4.3 I am testing.
what you might be really seeing is
http://bugzilla.kernel.org/show_bug.cgi?id=13178
which I am currently debugging.
jim
next prev parent reply other threads:[~2009-06-19 13:26 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-19 11:15 Mounting sysfs early Will Newton
2009-06-19 13:26 ` jim owens [this message]
2009-06-19 13:36 ` Will Newton
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