linux-kernel - Re: r8169 on n2100 (was Re: r8169 mac address change (was Re: [0/3] 2.6.19-rc2: known regressions))

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Message-ID: <20061215211435.GB10367@flint.arm.linux.org.uk>
Date:	Fri, 15 Dec 2006 21:14:35 +0000
From:	Russell King <rmk+lkml@....linux.org.uk>
To:	Lennert Buytenhek <buytenh@...tstofly.org>
Cc:	Francois Romieu <romieu@...zoreil.com>,
	Martin Michlmayr <tbm@...ius.com>,
	Riku Voipio <riku.voipio@....fi>, linux-kernel@...r.kernel.org
Subject: Re: r8169 on n2100 (was Re: r8169 mac address change (was Re: [0/3] 2.6.19-rc2: known regressions))

On Fri, Dec 15, 2006 at 10:03:29PM +0100, Lennert Buytenhek wrote:
> On Fri, Dec 15, 2006 at 09:15:22PM +0100, Francois Romieu wrote:
> 
> > > Is there a way we can have this done by default on the n2100?  I guess
> > > that since it's a PCI device, there isn't much hope for that..?
> > 
> > Do you mean an automagically tuned default value based on CONFIG_ARM ?
> 
> No, that wouldn't make sense, that's like making a workaround depend on
> arch == i386.
> 
> I'm thinking that we should somehow enable this option on the n2100
> built-in r8169 ports by default only.  Since the n2100 also has a mini-PCI
> slot, and it is in theory possible to put an r8169 on a mini-PCI card,
> the workaround probably shouldn't apply to those, so testing for
> CONFIG_MACH_N2100 also isn't the right thing to do.

There is dev->broken_parity_status ... although exactly what the sematics
of that flag actually are seems to be rather vague - there's code which
sets it for the Mellanox Tavor device, but it seems to only be exposed
via sysfs - no code in drivers/pci seems to take any action based upon
this flag being set.

That rather raises the question about the usefulness of that quirk.

-- 
Russell King
 Linux kernel    2.6 ARM Linux   - http://www.arm.linux.org.uk/
 maintainer of:
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