Older, notably the ISP2100, chips have some contraints for the request
  queue depth and number of scatter-gather elements allowed for a
  given command.  For this chip, reduce request queue size to 128 and
  maximum number of scatter-gather entries for a command to 32.

 drivers/scsi/qla2xxx/qla_def.h  |   14 +++-----------
 drivers/scsi/qla2xxx/qla_init.c |    9 +++++----
 drivers/scsi/qla2xxx/qla_iocb.c |   14 +++++++-------
 drivers/scsi/qla2xxx/qla_os.c   |   14 +++++++++-----
 drivers/scsi/qla2xxx/qla_rscn.c |    2 +-
 5 files changed, 25 insertions(+), 28 deletions(-)