From: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Date: Thu, 26 Jan 2006 01:00:33 +0000 (+0900)
Subject: [PATCH] shpchp - bugfix: add missing serialization
X-Git-Tag: v2.6.17-rc1~998^2~38
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ef3be54777901e570185089f21fbe4498453f67e;p=pandora-kernel.git

[PATCH] shpchp - bugfix: add missing serialization

Current shpchp driver might cause system panic because of lack of
serialization. It can be reproduced very easily by the following
operation.

	# cd /sys/bus/pci/slots/<slot#>
	# while true; do echo 0 > power ; echo 1 > power ; done &
	# while true; do echo 0 > power ; echo 1 > power ; done &

This patch fixes this issue by changing shpchp to get appropreate
semaphore for hot-plug operation.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

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