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Message-Id: <20090624.000109.49664041.davem@davemloft.net>
Date:	Wed, 24 Jun 2009 00:01:09 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	socketcan@...tkopp.net
Cc:	wg@...ndegger.com, heiko.carstens@...ibm.com,
	schwidefsky@...ibm.com, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH] can: let SJA1000 driver depend on HAS_IOMEM

From: Oliver Hartkopp <socketcan@...tkopp.net>
Date: Wed, 24 Jun 2009 08:52:38 +0200

> Wolfgang Grandegger wrote:
>> Heiko Carstens wrote:
> 
> 
>>> Index: linux-2.6/drivers/net/can/Kconfig
>>> ===================================================================
>>> --- linux-2.6.orig/drivers/net/can/Kconfig
>>> +++ linux-2.6/drivers/net/can/Kconfig
>>> @@ -36,7 +36,7 @@ config CAN_CALC_BITTIMING
>>>  	  If unsure, say Y.
>>>  
>>>  config CAN_SJA1000
>>> -	depends on CAN_DEV
>>> +	depends on CAN_DEV && HAS_IOMEM
>>>  	tristate "Philips SJA1000"
>>>  	---help---
>>>  	  Driver for the SJA1000 CAN controllers from Philips or NXP
>> 
>> Hm, this Kconfig entry is not directly responsible for building
>> sja1000_platform.o. It builds sja1000.o, which does not rely on
>> HAS_IOMEM. It should be added to "config CAN_SJA1000_PLATFORM" instead.
> 
> Hi Wolfgang,
> 
> the question is, if we should add HAS_IOMEM to almost every SJA1000 depended
> driver like SJA1000_PLATFORM, SJA1000_OF_PLATFORM, EMS_PCI and KVASER_PCI ???
> 
> Is it possible to have a support for the SJA1000 that does *not* depend on
> HAS_IOMEM?

This was my initial impression when I saw Wolfgang's suggested patch,
and I still feel this way, and thus Heiko's patch seems the best for
now until there is an exception.

And in fact Heiko's patch has been in my tree for a while already :)
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