linux-kernel - Re: [PATCH] x86: fix warning in e820_reserve

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Date:	Sun, 29 Jun 2008 11:49:41 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Yinghai Lu <yhlu.kernel@...il.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] x86: fix warning in e820_reserve_resources with 32bit


* Yinghai Lu <yhlu.kernel@...il.com> wrote:

> when 64bit resource is not enabled, got:
> 
> arch/x86/kernel/e820.c: In function ‘e820_reserve_resources’:
> arch/x86/kernel/e820.c:1217: warning: comparison is always false due to limited range of data type
> 
> because res->start/end is resource_t aka u32. it will overflow.
> 
> fix it with temp end of u64

applied, thanks.

	Ingo
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