linux-kernel - Re: 2.6.28-git8: tg3 doesn't work due to firmware not loading (-git7 is ok)

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Message-Id: <20090113.122703.157508326.davem@davemloft.net>
Date:	Tue, 13 Jan 2009 12:27:03 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	mcarlson@...adcom.com
Cc:	dwmw2@...radead.org, Valdis.Kletnieks@...edu,
	alessandro.suardi@...il.com, jaswinderlinux@...il.com,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: 2.6.28-git8: tg3 doesn't work due to firmware not loading
 (-git7 is ok)

From: "Matt Carlson" <mcarlson@...adcom.com>
Date: Tue, 13 Jan 2009 10:39:48 -0800

> On Sun, Jan 11, 2009 at 01:39:29PM -0800, David Miller wrote:
> > From: David Woodhouse <dwmw2@...radead.org>
> > Date: Sun, 11 Jan 2009 12:24:58 +0000
> > 
> > > Other drivers will load the firmware later, at the time the device is
> > > brought up. This means that even if you build the driver into the kernel
> > > without its firmware, it can still request the firmware later, when you
> > > try to start _using_ it. And when the file system is available.
> > 
> > For example, for mounting an NFS root using that device.... Oh, will I
> > need an initramfs for that once you pull the firmware-in-kernel
> > option?
> > 
> > To me, device probe is in fact the place to fail firmware discovery
> > for networking devices.  Because such a failure can mean you can't
> > mount your root filesystem.
> 
> David, is this the direction you want to take the fix?  I'm sitting on
> a patch that elaborates on David Woodhouse's work which moves the
> request_firmware call to tg3_open().  Before I posted it for comment,
> I wanted to make sure the patch is moving in the right direction.

You can post it, sure.

But it doesn't actually fix the nfsroot case, that will still be
broken.
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