Removed unnecessary hiwat code to free up the number available IOCBs.
Eliminates unnecessary eh_ escalations due to inability to obtain IOCB
pkt for marker.

v2.
- Remove define not used anymore and fix req_q_coun accounting.
Signed-off-by: NKaren Higgins <karen.higgins@qlogic.com>
[michaelc: ported patch from qlogic.com driver to upstream]
Signed-off-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

Fix misspelling of "firmware" in ql4_mbx.c

It's spelled "firmware".
Signed-off-by: NNick Andrew <nick@nick-andrew.net>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

This patch adds target reset functionalty.
Signed-off-by: NMike Christie <michaelc@cs.wisc.edu>
Acked-by: NDavid Somayajulu <david.somayajulu@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

All all inbound mbx registers for all mbx commands. Remove dead code.
Signed-off-by: NDavid Somayajulu <david.somayajulu@qlogic.com>
Signed-off-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

- make needlessly global code static
- #if 0 unused functions
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Acked-by: NRavi Anand <ravi.anand@qlogic.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

The included patch fixes the following issues:

1. qla3xxx/qla4xxx co-existence issue which can result in a lockup
when qla3xxx driver is unloaded, or when ifdown; ifup is performed on
one of the interfaces correponding to qla3xxx. This is because qla4xxx
HBA supports one ethernet and iscsi interfaces per port. Both iscsi
and ethernet interfaces share the same state machine. The problem has
to do with synchronizing access to the state machine in the event of a
reset

2. mutex_lock() is sometimes not followed by mutex_unlock() prior to
invoking a msleep() in qla4xxx_mailbox_command()
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

Signed-off-by: NAndrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

commit 0181944f adds a
'extended_error_logging' global variable to qla2xxx which is defined by
qla4xxx too.

Trying to build both drivers results in the following error:

  LD      drivers/scsi/built-in.o
  drivers/scsi/qla4xxx/built-in.o: In function `qla4xxx_slave_configure':
  drivers/scsi/qla4xxx/ql4_os.c:1433: multiple definition of `extended_error_logging'
  drivers/scsi/qla2xxx/built-in.o:drivers/scsi/qla2xxx/qla_os.c:2166:
  first defined here
  make[2]: *** [drivers/scsi/built-in.o] Error 1
  make[1]: *** [drivers/scsi] Error 2
  make: *** [drivers] Error 2

The following patch simply adds a qla2_ (qla4_ respectively) prefix to
the variable name.
Signed-off-by: NFrederik Deweerdt <frederik.deweerdt@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

open-iSCSI driver for Qlogic Corporation's iSCSI HBAs
Signed-off-by: NRavi Anand <ravi.anand@qlogic.com>
Signed-off-by: NDavid Somayajulu <david.somayajulu@qlogic.com>
Signed-off-by: NDoug Maxey <dwm@bubba.enoyolf.org>
Signed-off-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>