From: Cornelia Huck <cohuck@de.ibm.com>
From: Thomas Spatzier <tspat@de.ibm.com>

common i/o layer changes:
 - Prevent double unregister of ccw devices.
 - Move unregister out of the subchannel remove function, to
   avoid live-lock due to hotplug if the root device is currently
   indisposed.
 - Delete pending timer after a machine check.
 - Revert change to allocate qdio queues and SLIBS in DMA memory.
 - Decrement ccw_device_init_count only after ccw_device_register is done.
 - Remove unnecessary check in ccw_hotplug.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>