tree 952a767bbd21fa9ed208619b31e5c5ff46ab4430
parent aa24886e379d2b641c5117e178b15ce1d5d366ba
author Denis V. Lunev <den@openvz.org> 1186477998 +0400
committer Greg Kroah-Hartman <gregkh@suse.de> 1192226595 -0700

PCI: pci_get_device call from interrupt in reboot fixups

The following calltrace is possible now:
 handle_sysrq
   machine_emergency_restart
     mach_reboot_fixups
       pci_get_device
         pci_get_subsys
	   down_read
The patch skips reboot fixup if called from sysrq-B code.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>