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A few stylistic changes to unify some code patterns in the subsystem:
- The similar queue_delayed_work helpers fw_schedule_bm_work,
schedule_iso_resource, and sbp2_queue_work now have the same call
convention.
- Two conditional calls of schedule_iso_resource are factored into
another small helper.
- An sbp2_target_get helper is added as counterpart to
sbp2_target_put.
Object size of firewire-core is decreased a little bit, object size of
firewire-sbp2 remains unchanged.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
The Unit_Characteristics entry of an SBP-2 unit directory is not
mandatory as far as I can tell. If it is missing, we would probably
fail to log in into the target because firewire-sbp2 would not wait for
status after it sent the login request.
The fix moves the cleanup of tgt->mgt_orb_timeout into a place where it
is executed exactly once before login, rather than 0..n times depending
on the target's config ROM. With targets with one or more
Unit_Characteristics entries, the result is the same as before.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Per SBP-2 clause 5.3, a target shall store 8...32 bytes of status
information. Trailing zeros after the first 8 bytes don't need to be
stored, they are implicit. Fix the status write handler to clear all
unwritten status data.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
If a target writes invalid status (typically status of a command that
already timed out), firewire-sbp2 attempts to put away an ORB that
doesn't exist. https://bugzilla.redhat.com/show_bug.cgi?id=519772
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
ieee1394: sbp2: add support for disks >2 TB (and 16 bytes long CDBs)
firewire: sbp2: add support for disks >2 TB (and 16 bytes long CDBs)
firewire: core: do not DMA-map stack addresses
Increase the command ORB data structure to transport up to 16 bytes long
CDBs (instead of 12 bytes), and tell the SCSI mid layer about it. This
is notably necessary for READ CAPACITY(16) and friends, i.e. support of
large disks.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
firewire: core: use more outbound tlabels
firewire: core: don't update Broadcast_Channel if RFC 2734 conditions aren't met
firewire: core: prepare for non-core children of card devices
firewire: core: include linux/uaccess.h instead of asm/uaccess.h
firewire: add parent-of-unit accessor
firewire: rename source files
firewire: reorganize header files
firewire: clean up includes
firewire: ohci: access bus_seconds atomically
firewire: also use vendor ID in root directory for driver matches
firewire: share device ID table type with ieee1394
firewire: core: add sysfs attribute for easier udev rules
firewire: core: check for missing struct update at build time, not run time
firewire: core: improve check for local node
Retrieval of an fw_unit's parent is a common pattern in high-level code.
Wrap it up as device = fw_parent_device(unit).
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
The source files of firewire-core, firewire-ohci, firewire-sbp2, i.e.
"drivers/firewire/fw-*.c"
are renamed to
"drivers/firewire/core-*.c",
"drivers/firewire/ohci.c",
"drivers/firewire/sbp2.c".
The old fw- prefix was redundant to the directory name. The new core-
prefix distinguishes the files according to which driver they belong to.
This change comes a little late, but still before further firewire
drivers are added as anticipated RSN.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
