linux-kernel - Re: [PATCH 1/4] sparc: _sparc_find_resource() should check for exact matches

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Message-Id: <20110523.024558.1625882862305082516.davem@davemloft.net>
Date:	Mon, 23 May 2011 02:45:58 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	geert@...ux-m68k.org
Cc:	linux-kernel@...r.kernel.org, sparclinux@...r.kernel.org,
	linux-m68k@...r.kernel.org
Subject: Re: [PATCH 1/4] sparc: _sparc_find_resource() should check for
 exact matches

From: Geert Uytterhoeven <geert@...ux-m68k.org>
Date: Sat, 21 May 2011 21:39:13 +0200

> The address that's passed to _sparc_find_resource() should always be the
> start address of a resource:
>   - iounmap() passes a page-aligned virtual address, while the original
>     address was created by adding the in-page offset to the resource's
>     start address,
>   - sbus_free_coherent() and pci32_free_coherent() should be passed an
>     address obtained from sbus_alloc_coherent() resp. pci32_alloc_coherent(),
>     which is always a resource's start address.
> 
> Hence replace the range check by a check for an exact match.
> 
> Signed-off-by: Geert Uytterhoeven <geert@...ux-m68k.org>

Acked-by: David S. Miller <davem@...emloft.net>
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