From mboxrd@z Thu Jan  1 00:00:00 1970
From: Wolfgang Grandegger <wg@grandegger.com>
Subject: Re: can acknowledgment
Date: Thu, 05 Sep 2013 22:12:40 +0200
Message-ID: <5228E5B8.3010201@grandegger.com>
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To: Michael Muldoon <mbmuldoon07@gmail.com>
Cc: Linux-CAN <linux-can@vger.kernel.org>

On 09/05/2013 09:45 PM, Michael Muldoon wrote:
> Here it is:
> 
> Linux version 3.2.20 (tomh@turbo_tom) (gcc version 4.5.3 (Buildroot
> 2012.05) ) #2 Wed Dec 5 14:33:28 CST 2012
> CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=00053177
> CPU: VIVT data cache, VIVT instruction cache
> Machine: Atmel AT91SAM9G20-EK

Even if reported, this seems not to be a Atmel AT91SAM9G20-EK board.
What do you find in "arch/arm/mach-at91/board-sam9g20ek.c".

...
> can: controller area network core (rev 20090105 abi 8)
> NET: Registered protocol family 29
> CAN device driver interface
> can: raw protocol (rev 20090105)
> mcp251x spi0.0: probed
> mcp251x spi0.2: probed
> mcp251x spi0.0: CNF: 0x01 0xff 0x02
> mcp251x spi0.2: CNF: 0x01 0xff 0x02

Strange. The latter two line should not show up before the devices are
opened (with ifconfig or ip.. Also "drivers/net/can/mcp251x.c" seems to
be special.

And how to you configure and start the CAN devices?

Wolfgang.