linux-kernel - Re: Looks broken to me: x86, cyrix: debug

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Message-ID: <alpine.LFD.1.10.0810112146400.1984@ftp.linux-mips.org>
Date:	Sat, 11 Oct 2008 21:52:18 +0100 (BST)
From:	"Maciej W. Rozycki" <macro@...ux-mips.org>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	mingo@...e.hu, torvalds@...ux-foundation.org
Subject: Re: Looks broken to me: x86, cyrix: debug

On Sat, 11 Oct 2008, Alan Cox wrote:

> > +#define getCx86_old(reg) ({ outb((reg), 0x22); inb(0x23); })
> 
> Doesn't expand to any kind of returned value.

 Well, actually it returns the value of the inb() expression -- cf the 
semantics of compound statements.  The rest looks suspicious indeed.

  Maciej
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