[PATCH] shpchp - bugfix: add missing serialization

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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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This commit is contained in:

Kenji Kaneshige 2006-01-26 10:00:33 +09:00 • committed by Greg Kroah-Hartman

parent d29aaddab3

commit ef3be54777

1 changed files with 24 additions and 42 deletions

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drivers/pci/hotplug/shpchp_ctrl.c

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