[PATCH 0/5] libsas fixes discovered via isci-atapi enabling effort

Dan Williams
2011-09-20T22:10:04Z

While enabling atapi device support for isci we encountered a condition
whereby multiple srX devices (one for every possible LUN) were exported
by the midlayer. Looking at other drivers showed that they had a local
workaround for this and other conditions in custom
->slave_{alloc|configure} methods. Rather than add custom workaround
for isci this patchset uplevels those workarounds to libsas proper.

Patch 3/5 is tagged RFC as I do not know the original history behind
hard limiting libsas end devices to a queue_depth of 32. At least mvsas
has been bumping this up to 64 on its own.

---

Dan Williams (5):
libsas: disable scanning lun > 0 on ata devices
libsas: fix ->change_queue_{depth|type} for sata devices
libsas: dynamic queue depth
mvsas: remove mvs_slave_{alloc|configure}
pm8001: remove pm8001_slave_{alloc|configure}

drivers/ata/libata-core.c | 1 +
drivers/ata/libata-scsi.c | 44 +++++++++++++++++++++++------------
drivers/scsi/libsas/sas_scsi_host.c | 42 +++++++++++++++++++--------------
drivers/scsi/mvsas/mv_init.c | 4 ++-
drivers/scsi/mvsas/mv_sas.c | 30 ------------------------
drivers/scsi/mvsas/mv_sas.h | 2 --
drivers/scsi/pm8001/pm8001_init.c | 4 ++-
drivers/scsi/pm8001/pm8001_sas.c | 31 +------------------------
drivers/scsi/pm8001/pm8001_sas.h | 2 --
drivers/scsi/scsi_transport_sas.c | 10 ++++++--
include/linux/libata.h | 2 ++
11 files changed, 69 insertions(+), 103 deletions(-)