[PATCH] fix 2.5 scsi queue depth setting

[PATCH] fix 2.5 scsi queue depth setting

This patch fixes queue depth setting of scsi devices.

This is done by pairing shost->slave_attach() calls with
a scsi_build_commandblocks in the new scsi_slave_attach.

This is a patch aginst linux-scsi.bkbits.net/scsi-for-linus-2.5 after
applying the last posted hch version of the "Eliminate scsi_host_tmpl_list"
patch, it still applies with offset to the current scsi-for-linus-2.5.

It also:

Will properly call shost->slave_attach after a scsi_unregister_device()
followed by a scsi_register_device() - as could happen if you were able to
rmmod all upper level drivers and then insmod any of them back (only
possible when not booted on scsi).

Checks for scsi_build_commandblocks() allocation failures.

Sets queue depth even if shost->slave_attach() does not call
scsi_adjust_queue_depth.

Removes the use of revoke (no drivers are setting it, it was only
call via the proc scsi remove-single-device interface).

There are at least two problems with sysfs and scsi (one in sysfs, one in
scsi, I'll try and post more soon ...) so I could not completey test rmmod
of an adapter or upper level driver without leading to an oops or shutdown
hang.

 hosts.c              |    5 --
 hosts.h              |    6 --
 osst.c               |    9 ++-
 scsi.c               |  118 +++++++++++++++++++++++++++++++--------------------
 scsi.h               |    2
 scsi_mid_low_api.txt |   24 ----------
 scsi_scan.c          |    9 ---
 sd.c                 |   10 +++-
 sg.c                 |   10 ++--
 sr.c                 |    7 ++-
 st.c                 |   11 +++-
 11 files changed, 106 insertions(+), 105 deletions(-)

===== drivers/scsi/hosts.c 1.23 vs edited =====