linux-kernel - Re: [PATCH] drivers: mfd: mfd-core: disable irq_domain related code when 'HAVE_GENERIC

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Date:	Wed, 24 Jul 2013 13:31:16 +0800
From:	Chen Gang <gang.chen@...anux.com>
To:	Heiko Carstens <heiko.carstens@...ibm.com>
CC:	sameo@...ux.intel.com, lee.jones@...aro.org,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] drivers: mfd: mfd-core: disable irq_domain related code
 when 'HAVE_GENERIC_HARDIRQS' disabled.

On 07/24/2013 01:02 PM, Heiko Carstens wrote:
> On Wed, Jul 24, 2013 at 11:33:04AM +0800, Chen Gang wrote:
>> > 'irq_domain' depends on hard irqs, so for the architectures which have
>> > no hard irqs, but still need mfd (e.g. s390), need disable the related
>> > code, or can not pass compiling.
>> > 
>> > The related commit:
>> > 
>> >   "c94bb23 mfd: Make MFD core code Device Tree and IRQ domain aware"
>> > 
>> > The related error: (with allmodconfig under s390)
>> > 
>> >   ERROR: "irq_create_mapping" [drivers/mfd/mfd-core.ko] undefined!
>> > 
>> > 
>> > Signed-off-by: Chen Gang <gang.chen@...anux.com>
> s390 will have GENERIC_HARDIRQS soon (very likely next merge window),
> so lets not add more GENERIC_HARDIRQS ifdefs in the code.
> 

OK, thanks.

-- 
Chen Gang
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