euler inclusion
category: bugfix
bugzilla: NA
CVE: NA

---------------------------

   interrupt                                          scsi_eh

ahci_error_intr
  =>ata_port_freeze
    =>__ata_port_freeze
      =>ahci_freeze (turn IRQ off)
    =>ata_port_abort
      =>ata_port_schedule_eh
        =>shost->host_eh_scheduled++;
	host_eh_scheduled = 1
                                                 scsi_error_handler
						   =>ata_scsi_error
						     =>ata_scsi_port_error_handler
						       =>ahci_error_handler
						       . =>sata_pmp_error_handler
						       .   =>ata_eh_thaw_port
						       .     =>ahci_thaw (turn IRQ on)
ahci_error_intr                                        .
  =>ata_port_freeze                                    .
    =>__ata_port_freeze                                .
      =>ahci_freeze (turn IRQ off)                     .
    =>ata_port_abort                                   .
      =>ata_port_schedule_eh                           .
        =>shost->host_eh_scheduled++;                  .
	host_eh_scheduled = 2                          .
						       =>ata_std_end_eh
						         =>host->host_eh_scheduled = 0;

host_eh_scheduled is 0 and scsi eh thread will not be scheduled again,
and the ata port remain freeze and will never be enabled.
Reported-by: Nluojian <luojian5@huawei.com>
Signed-off-by: NJason Yan <yanaijie@huawei.com>
Reviewed-by: Nzhengbin <zhengbin13@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>