linux-kernel - Re: [BUG] 2.6.29-rc7 broke r8169 MAC on Thecus n2100 ARM board

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Date:	Sat, 14 Mar 2009 12:37:53 +0100
From:	Mikael Pettersson <mikpe@...uu.se>
To:	Tim Durack <tdurack@...il.com>
Cc:	Francois Romieu <romieu@...zoreil.com>,
	Mikael Pettersson <mikpe@...uu.se>,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	ivecera@...hat.com
Subject: Re: [BUG] 2.6.29-rc7 broke r8169 MAC on Thecus n2100 ARM board

Tim Durack writes:
 > On Fri, Mar 13, 2009 at 4:15 PM, Francois Romieu <romieu@...zoreil.com>wrote:
 > 
 > > Mikael Pettersson <mikpe@...uu.se> :
 > > > With the 2.6.29-rc7 kernel I'm unable to 'ifup' eth0 on my ARM-based
 > > > Thecus n2100 NAS box, which has an RTL8169 NIC (10ec:8169 (rev 10)).
 > > > A diff of the kernel logs from 2.6.29-rc6 and -rc7 shows that -rc7
 > > > first mangles and then zaps the MAC addresses:
 > >
 > > Can you apply the attached patch and see if it fixes any of these
 > > problems ?
 > >
 > > Tim, could you give it a try too ? It applies with "patch -p1" from
 > > the kernel tree directory.
 > >
 > > --
 > > Ueimor
 > >
 > 
 > No luck:

No joy here either. 2.6.29-rc8 + this patch shows the same misbehaviour
as 2.6.29-rc7 had. Here's a minicom log of an attempted boot:

(kernel messages)

r8169 Gigabit Ethernet driver 2.3LK-NAPI loaded
r8169 0000:00:01.0: no PCI Express capability
r8169 0000:00:01.0: MAC address found in EEPROM: 00:14:fd:10:00:00
eth0: RTL8169sb/8110sb at 0xe080c200, 00:00:00:00:00:00, XID 10000000 IRQ 27
r8169 Gigabit Ethernet driver 2.3LK-NAPI loaded
r8169 0000:00:02.0: no PCI Express capability
r8169 0000:00:02.0: MAC address found in EEPROM: 00:14:fd:10:00:00
eth1: RTL8169sb/8110sb at 0xe0810300, 00:00:00:00:00:00, XID 10000000 IRQ 30

(init messages)

Bringing up interface eth0:  RTNETLINK answers: Cannot assign requested address
Failed to bring up eth0.

May I suggest that 6709fe9a27e43a4931938fe0d7f2cc5edef31386 is reverted
until this regression is debugged and fixed?

/Mikael
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