[PATCH] s390: zfcp host adapter

[PATCH] s390: zfcp host adapter

From: Martin Schwidefsky <schwidefsky@de.ibm.com>

 - Adapt to notify api change in cio.
 - Add missing unregister_reboot_notifier() for error path.
 - Fix infinite error recovery escalation for certain port failures.
 - Fix reference counting.
 - Use GFP_ATOMIC for kmalloc while holding a spinlock.
 - Don't open adapter/port if unit/port is removed from configuration
   after it has already been closed.
 - Don't establish qdio queues if a port/unit is going to be removed.
 - Shutdown ports and units before removing them.
 - Use schedule_work for scsi_add_device.
 - Don't reopen nameserver port when an rscn was received.
 - Don't call scsi_done twice in zfcp_fsf_send_fcp_command_task_handler.
 - Get rid of scsi fake queue, scsi_reqs_active and scsi_reqs_active_wq.
 - Get rid of unused adapter status.
 - Allow enabling of scsi devices at boot time with zfcp_dev parameter.
 - Change name prefix from sg to sg_list for functions which work with
   the struct sg_list.
 - Don't call scsi_add_device from zfcp error recovery thread to avoid a
   deadlock if a scsi command sent during scsi_add_device fails.
 - Fix scsi i/o stall due to missing local-link-up event.