netdev - Re: [net-next-2.6 PATCH v2] can: SJA1000: generic OF platform bus driver

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Date:	Sat, 23 May 2009 18:51:26 +0200
From:	Wolfgang Grandegger <wg@...ndegger.com>
To:	Arnd Bergmann <arnd@...db.de>
CC:	devicetree-discuss@...abs.org,
	Linux Netdev List <netdev@...r.kernel.org>,
	linuxppc-dev <Linuxppc-dev@...abs.org>
Subject: Re: [net-next-2.6 PATCH v2] can: SJA1000: generic OF platform bus
 driver

Arnd Bergmann wrote:
> On Friday 22 May 2009, Wolfgang Grandegger wrote:
>> This patch adds a generic driver for SJA1000 chips on the OpenFirmware
>> platform bus found on embedded PowerPC systems. 
> 
> Nice driver!
> 
>> +static u8 sja1000_ofp_read_reg(const struct net_device *dev, int reg)
>> +{
>> +	return in_8((void __iomem *)(dev->base_addr + reg));
>> +}
>> +
>> +static void sja1000_ofp_write_reg(const struct net_device *dev, int reg, u8 val)
>> +{
>> +	out_8((void __iomem *)(dev->base_addr + reg), val);
>> +}
> 
> Minor nitpicking: dev->base_addr should be defined as an __iomem pointer
> so you can avoid the cast here and in the ioremap/iounmap path.

Here the member "base_addr" of "struct net_device" is used and it's not
up to me to change the type.

Wolfgang.
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