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

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Message-ID: <20130724050252.GA4091@osiris>
Date:	Wed, 24 Jul 2013 07:02:52 +0200
From:	Heiko Carstens <heiko.carstens@...ibm.com>
To:	Chen Gang <gang.chen@...anux.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 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.

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