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linux/drivers/scsi/libsas
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Dan Williams 1a34c06401 [SCSI] libsas: fix port->dev_list locking 
port->dev_list maintains a list of devices attached to a given sas root port.
It needs to be mutated under a lock as contexts outside of the
single-threaded-libsas-workqueue access the list via sas_find_dev_by_rphy().
Fixup locations where the list was being mutated without a lock.

This is a follow-up to commit 5911e963 "[SCSI] libsas: remove expander
from dev list on error", where Luben noted [1]:

    > 2/ We have unlocked list manipulations in sas_ex_discover_end_dev(),
    > sas_unregister_common_dev(), and sas_ex_discover_end_dev()

    Yes, I can see that and that is very unfortunate.

[1]: http://marc.info/?l=linux-scsi&m=131480962006471&w=2

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-10-16 10:54:02 -05:00
..
Kconfig [SCSI] libsas: convert to standard kernel debugging 2011-01-24 12:05:38 -06:00
Makefile Merge branch 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6 2011-03-20 18:14:55 -07:00
sas_ata.c [SCSI] libsas: Add option for SATA soft reset 2011-05-26 22:49:33 -05:00
sas_discover.c [SCSI] libsas: fix port->dev_list locking 2011-10-16 10:54:02 -05:00
sas_dump.c [SCSI] libsas: convert to standard kernel debugging 2011-01-24 12:05:38 -06:00
sas_dump.h [SCSI] libsas: convert to standard kernel debugging 2011-01-24 12:05:38 -06:00
sas_event.c [SCSI] libsas: Add SAS_HA state flags to avoid queueing events while unloading 2007-01-13 16:21:53 -06:00
sas_expander.c [SCSI] libsas: fix port->dev_list locking 2011-10-16 10:54:02 -05:00
sas_host_smp.c [SCSI] libsas: sgpio write support 2011-09-22 14:59:09 +04:00
sas_init.c [SCSI] isci: export phy events via ->lldd_control_phy() 2011-10-02 13:24:26 -05:00
sas_internal.h [SCSI] libsas: fix/amend device gone notification in sas_deform_port() 2011-05-26 22:49:32 -05:00
sas_phy.c [SCSI] libsas: fix/amend device gone notification in sas_deform_port() 2011-05-26 22:49:32 -05:00
sas_port.c [SCSI] libsas: fix/amend device gone notification in sas_deform_port() 2011-05-26 22:49:32 -05:00
sas_scsi_host.c [SCSI] isci: atapi support 2011-10-02 13:20:03 -05:00
sas_task.c [SCSI] Unify SAM_ and SAM_STAT_ macros 2010-07-28 09:07:49 -05:00