linux-kernel - Re: [tip:x86/headers] x86: fix "__udivdi3" [drivers/scsi/aha1542.ko] undefined

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Message-ID: <4995F979.9040304@zytor.com>
Date:	Fri, 13 Feb 2009 14:51:37 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	James Bottomley <James.Bottomley@...senPartnership.com>
CC:	mingo@...hat.com, tglx@...utronix.de, mingo@...e.hu,
	linux-kernel@...r.kernel.org, linux-tip-commits@...r.kernel.org
Subject: Re: [tip:x86/headers] x86: fix "__udivdi3"	[drivers/scsi/aha1542.ko]
 undefined

James Bottomley wrote:
> On Fri, 2009-02-13 at 12:14 -0800, H. Peter Anvin wrote:
>> James Bottomley wrote:
>>
>> #define isa_virt_to_bus(x) ((unsigned int)virt_to_phys(x))
>>
>> ... if we're going to do that.
> 
> Actually, it probably wants to become a static inline ... that way the
> compiler can always verify the promotion and truncation is legal
> regardless of whether an actual user is compiled or not.
> 

Yes, that's the right thing to do.  I'll fix it up and commit a patch.

	-hpa

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