From: Lv Zheng <lv.zheng@intel.com>
Date: Fri, 13 Sep 2013 05:13:47 +0000 (+0800)
Subject: ACPI / IPMI: Fix race caused by the timed out ACPI IPMI transfers
X-Git-Tag: v3.13-rc1~96^2~22^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8584ec6ae9cc386de344e0d33b60f76368bb73ab;p=pandora-kernel.git

ACPI / IPMI: Fix race caused by the timed out ACPI IPMI transfers

This patch fixes races caused by timed out ACPI IPMI transfers.

This patch uses timeout mechanism provided by ipmi_si to avoid the race
that the msg_done flag is set but without any protection, its content can
be invalid.  Thanks for the suggestion of Corey Minyard.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Reviewed-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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