From: Jin Dongming <jin.dongming@np.css.fujitsu.com>
Date: Wed, 29 Sep 2010 11:53:52 +0000 (+0800)
Subject: ACPI, APEI, Fix acpi_pre_map() return value
X-Git-Tag: v2.6.36-rc7~25^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bad97c37db9c1ee36de8ac58f9f73931d15a2e94;p=pandora-kernel.git

ACPI, APEI, Fix acpi_pre_map() return value

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.

Signed-off-by: Jin Dongming <jin.dongming@np.css.fujitsu.com>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
---

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