linux-kernel - Re: [patch 1/6] x86: apicdef unification: some constants made unsigned

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Message-ID: <Pine.LNX.4.64N.0711121229360.30102@blysk.ds.pg.gda.pl>
Date:	Mon, 12 Nov 2007 12:31:44 +0000 (GMT)
From:	"Maciej W. Rozycki" <macro@...ux-mips.org>
To:	Robert Richter <robert.richter@....com>
cc:	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [patch 1/6] x86: apicdef unification: some constants made unsigned

On Tue, 6 Nov 2007, Robert Richter wrote:

> -#define			GET_APIC_VERSION(x)	((x)&0xFF)
> -#define			GET_APIC_MAXLVT(x)	(((x)>>16)&0xFF)
> -#define			APIC_INTEGRATED(x)	((x)&0xF0)
> +#define			GET_APIC_VERSION(x)	((x)&0xFFu)
> +#define			GET_APIC_MAXLVT(x)	(((x)>>16)&0xFFu)
> +#define			APIC_INTEGRATED(x)	((x)&0xF0u)

 No point in doing this -- hexadecimal literals are unsigned by 
definition.  File a compiler bug if you see them interpreted otherwise.

  Maciej
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