The following changes since commit cd8df932d894f3128c884e3ae1b2b484540513db:
[SCSI] qla4xxx: Update driver version to 5.02.00-k15 (2012-02-29 17:03:03 -0600)
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/djbw/isci.git tags/libsas-fixes
for you to fetch changes up to e81dcce46fdbb2c968d7314c2f19da3c2bba24d1:
scsi_transport_sas: fix delete vs scan race (2012-04-10 19:15:23 -0700)
----------------------------------------------------------------
libsas-fixes for 3.4-rc4
Regression fixes to stabilize the new workqueue and ata asynchronous
error handling implementations that were merged for v3.4-rc1.
1/ fix sas_drain_work() which was stomping on 'work' entries while the
workqueue was manipulating them. user would see random crashes when
trying to use scsi_transport_sas attributes for resets, or during
discovery
2/ (2) longstanding bugs related to the fact that libata (inventor and
primary host_eh_scheduled user) had built-in assumptions of 1:1
Scsi_Host-to-ata_port relationship. The libsas 1:N arrangement
magnified these problems when it gained async eh and began scheduling
eh in more scenarios (sas-transports resets) in 3.4-rc1.
3/ lifetime fixes for the rphy since code that has a domain_device
reference expected to be able to de-reference rphy parameters.
4/ (3) fixes for expander discovery bugs, one a recent regression with
ata-eh clobbering expander-phy data as it polled leading to system
crashes, a long standing bug that caused libsas to be
incompatible with expanders that advertised "PHY_VACANT" in low order
phy indexes, and a quirk for expanders that sometimes fail to zero
the sas address when no device is attached.
5/ fix for a long-standing bug whereby hotunplug events during initial
host scan can cause a system crash
----------------------------------------------------------------
This is a reflow of the 26 patches in the libsas-eh-reworks-v15 branch
to separate out the 12 fixes from the other feature development. These
patches, save for the new "scsi: fix eh wakeup (scsi_schedule_eh vs
scsi_restart_operations)", were all originally posted before the merge
window opened, and have also appeared in -next for the same timeframe.
There is a mix of pure regression fixes and fixes for long-standing bugs
in libsas. Some of the long-standing bug fixes are made worse / easier
to trigger by the new async error handling scheme.
The largest patch in the series is "libata, libsas: introduce sched_eh
and end_eh port ops" wants an ack from the ata folks, it has been on the
list since March 10th.
Dan Williams (10):
libsas: introduce sas_work to fix sas_drain_work vs sas_queue_work
libata, libsas: introduce sched_eh and end_eh port ops
libsas: fix sas_get_port_device regression
libsas: unify domain_device sas_rphy lifetimes
libsas: fix ata_eh clobbering ex_phys via smp_ata_check_ready
libata: make ata_print_id atomic
libsas, libata: fix start of life for a sas ata_port
scsi: fix eh wakeup (scsi_schedule_eh vs scsi_restart_operations)
libsas: fix false positive 'device attached' conditions
scsi_transport_sas: fix delete vs scan race
Maciej Trela (1):
libsas: cleanup spurious calls to scsi_schedule_eh
Thomas Jackson (1):
libsas: fix sas_find_bcast_phy() in the presence of 'vacant' phys
drivers/ata/libata-core.c | 8 +++-
drivers/ata/libata-eh.c | 57 +++++++++++++++++++++------
drivers/ata/libata-scsi.c | 35 +++++++++--------
drivers/ata/libata.h | 2 +-
drivers/scsi/ipr.c | 6 ++-
drivers/scsi/libsas/sas_ata.c | 72 +++++++++++++++++++++--------------
drivers/scsi/libsas/sas_discover.c | 67 ++++++++++++++++++--------------
drivers/scsi/libsas/sas_event.c | 36 +++++++++---------
drivers/scsi/libsas/sas_expander.c | 56 +++++++++++++++++++++------
drivers/scsi/libsas/sas_init.c | 25 ++++++------
drivers/scsi/libsas/sas_internal.h | 6 +--
drivers/scsi/libsas/sas_phy.c | 21 ++++------
drivers/scsi/libsas/sas_port.c | 15 +++-----
drivers/scsi/libsas/sas_scsi_host.c | 28 ++++++++++----
drivers/scsi/scsi_error.c | 14 +++++++
drivers/scsi/scsi_transport_sas.c | 6 ++-
include/linux/libata.h | 7 +++-
include/scsi/libsas.h | 44 ++++++++++++++++++---
include/scsi/sas_ata.h | 9 ++++-
19 files changed, 343 insertions(+), 171 deletions(-)
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