linux-kernel - Re: 2.6.18-rc5-mm1: drivers/infiniband/hw/amso1100/c2.c compile error

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Message-Id: <20060901140313.51cf077b.akpm@osdl.org>
Date:	Fri, 1 Sep 2006 14:03:13 -0700
From:	Andrew Morton <akpm@...l.org>
To:	Roland Dreier <rdreier@...co.com>
Cc:	Adrian Bunk <bunk@...sta.de>,
	Tom Tucker <tom@...ngridcomputing.com>,
	Steve Wise <swise@...ngridcomputing.com>,
	Roland Dreier <rolandd@...co.com>,
	linux-kernel@...r.kernel.org, openib-general@...nib.org,
	"David S. Miller" <davem@...emloft.net>
Subject: Re: 2.6.18-rc5-mm1: drivers/infiniband/hw/amso1100/c2.c compile
 error

On Fri, 01 Sep 2006 13:51:32 -0700
Roland Dreier <rdreier@...co.com> wrote:

>     Andrew> No, driver-specific workarounds are not legitimate, sorry.
> 
>     Andrew> The driver should simply fail to compile on architectures
>     Andrew> which do not implement __raw_writeq().
> 
> But how should i386 (say) implement __raw_writeq()?  As two
> __raw_writel()s protected by a spinlock (that serializes all IO
> transactions)?  That seems rather ugly.
> 

If it's a choice between "ugly" and "doesn't work on x86", we'll take
"ugly" ;)

-- 
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