OpenE2K
/
linux
6
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
linux/drivers/firewire
History
Stefan Richter 6ff8147d07 firewire: sbp2: remove obsolete reference counting 
Since commit 0278ccd9d5 "firewire: sbp2:
fix panic after rmmod with slow targets", the lifetime of an sbp2_target
instance does no longer extent past the return of sbp2_remove().
Therefore it is no longer necessary to call fw_unit_get/put() and
fw_device_get/put() in sbp2_probe/remove().

Furthermore, said commit also ensures that lu->work is not going to be
executed or requeued at a time when the sbp2_target is no longer in use.
Hence there is no need for sbp2_target reference counting for lu->work.

Other concurrent contexts:

  - Processes which access the sysfs of the SCSI host device or of one
    of its subdevices are safe because these interfaces are all removed
    by scsi_remove_device/host() in sbp2_release_target().

  - SBP-2 command block ORB transactions are finished when
    scsi_remove_device() in sbp2_release_target() returns.

  - SBP-2 management ORB transactions are finished when
    cancel_delayed_work_sync(&lu->work) before sbp2_release_target()
    returns.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
 		2011-09-16 22:23:56 +02:00
..
Kconfig Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 2011-03-21 10:05:22 -07:00
Makefile ieee1394: move init_ohci1394_dma to drivers/firewire/ 2010-10-11 14:48:03 +02:00
core-card.c atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
core-cdev.c firewire: cdev: fix 32 bit userland on 64 bit kernel compat corner cases 2011-08-12 15:30:08 +02:00
core-device.c Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 2011-08-21 18:13:19 -07:00
core-iso.c firewire: optimize iso queueing by setting wake only after the last packet 2011-05-10 22:53:45 +02:00
core-topology.c atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
core-transaction.c firewire: sbp2: parallelize login, reconnect, logout 2011-05-10 22:53:46 +02:00
core.h atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
init_ohci1394_dma.c ieee1394: move init_ohci1394_dma to drivers/firewire/ 2010-10-11 14:48:03 +02:00
net.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 2011-07-22 14:49:48 -07:00
nosy-user.h firewire: nosy: endianess fixes and annotations 2010-07-27 11:04:11 +02:00
nosy.c atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
nosy.h firewire: nosy: misc cleanups 2010-07-27 11:04:10 +02:00
ohci.c firewire: ohci: add no MSI quirk for O2Micro controller 2011-09-16 22:22:10 +02:00
ohci.h firewire: ohci: fix TI TSB82AA2 regression since 2.6.35 2010-10-17 14:09:12 +02:00
sbp2.c firewire: sbp2: remove obsolete reference counting 2011-09-16 22:23:56 +02:00