linux-kernel - Re: [patch] parisc, iommu: add missing include for prefetchw()

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Date:	Sat, 15 Oct 2011 17:41:36 -0700 (PDT)
From:	David Rientjes <rientjes@...gle.com>
To:	James Bottomley <James.Bottomley@...senpartnership.com>
cc:	Andi Kleen <andi@...stfloor.org>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org
Subject: Re: [patch] parisc, iommu: add missing include for prefetchw()

On Sat, 15 Oct 2011, James Bottomley wrote:

> This isn't physically possible on the parisc platform: prefetch.h is
> included by processor.h which, amongst other things, goes into
> spinlock.h which is above this file in sba_iommu.c
> 

asm/prefetch.h is included in processor.h, not linux/prefetch.h.  Thus, 
it's undefined for CONFIG_PA20=n.

> How did you try to compile this file?
> 

make allyesconfig
make drivers/parisc/sba_iommu.o
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