From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andi Kleen <andi@firstfloor.org>
Subject: Re: [PATCH 2/5] ACPI, APEI, Fix acpi_pre_map() return value
Date: Tue, 21 Sep 2010 14:47:46 +0200
Message-ID: <20100921124746.GF18991@one.firstfloor.org>
References: <1284865235-29920-1-git-send-email-ying.huang@intel.com> <1284865235-29920-3-git-send-email-ying.huang@intel.com>
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To: Huang Ying <ying.huang@intel.com>
Cc: Len Brown <lenb@kernel.org>, linux-kernel@vger.kernel.org, Andi Kleen <andi@firstfloor.org>, linux-acpi@vger.kernel.org, Jin Dongming <jin.dongming@np.css.fujitsu.com>

On Sun, Sep 19, 2010 at 11:00:32AM +0800, Huang Ying wrote:
> From: Jin Dongming <jin.dongming@np.css.fujitsu.com>
> 
> After we ioremap() a new region, we call __acpi_try_ioremap() to
> see whether another thread has already mapped the same region.
> This check clobbers "vaddr",  so compute the return value of
> acpi_pre_map() using the ioremap() result "map->vaddr" instead.
> 
> v2:
>     Modified the unsuitable description of patch.
> 
> v3:
>     Removed unlikely() check and made description simpler.

Reviewed-by: Andi Kleen <ak@linux.intel.com>

-Andi