netdev - Re: [PATCH] socketcan: add a driver for FlexCAN controllers.

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Date:	Fri, 18 Jun 2010 12:16:54 +0200
From:	Marc Kleine-Budde <mkl@...gutronix.de>
To:	Wolfgang Grandegger <wg@...ndegger.com>
CC:	"Hans J. Koch" <hjk@...utronix.de>,
	socketcan-core@...ts.berlios.de, netdev@...r.kernel.org
Subject: Re: [PATCH] socketcan: add a driver for FlexCAN controllers.

Wolfgang Grandegger wrote:
> Hi Hans-Jürgen,
> 
> On 06/17/2010 12:52 PM, Hans J. Koch wrote:
>> This adds a driver for FlexCAN based CAN controllers,
>> e.g. found in Freescale i.MX35 SoCs.
>>
>> The original version of this driver was posted by Sascha Hauer in July 2009:
>> http://kerneltrap.org/mailarchive/linux-netdev/2009/7/29/6251621
>>
>> I took this version, added NAPI support, and fixed some problems found
>> during testing. Well, here is the result. Please review.
> 
> I briefly browsed the patch and various bits and pieces are missing or
> not correctly implemented. Marc already pointed out a few of them:
> 
> - I do not find can_put/get_echo_skb functions in the code. How is
>   IFF_ECHO supposed to work?

the driver uses hardware loopback

> - Support for CAN_CTRLMODE_BERR_REPORTING and do_get_berr_counter()
>   seems to be missing.
> 
> - Make use of alloc_can_skb() and alloc_can_err_skb().

the last two points are already addressed in my version of the driver.

Marc

-- 
Pengutronix e.K.                  | Marc Kleine-Budde           |
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