Commit Graph

281 Commits

Author SHA1 Message Date
Stefan Richter
1a74bc68e4 ieee1394: sbp2: fix probing of some DVD-ROM/RWs
Since commit 98e238cd42 in Linux 2.6.19,
"ieee1394: sbp2: don't prefer MODE SENSE 10", some FireWire DVD-ROMs and
DVD-RWs were mistaken as CD-ROM because sr_mod now sent MODE SENSE 6.
The MMC command set includes only MODE SENSE 10.
http://bugzilla.kernel.org/show_bug.cgi?id=7800

This fix lets sbp2 switch scsi_device.use_10_for_rw on for MMC LUs.
This should rather be done in the command set driver sr_mod, not in the
sbp2 transport driver, and an according patch will follow for a next
Linux release.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-01-10 20:24:42 +01:00
Stefan Richter
97d552e35d ieee1394: sbp2: fix bogus dma mapping
Need to use a PCI device, not a FireWire host device.  Problem found by
Andreas Schwab, mistake pointed out by Benjamin Herrenschmidt.
http://ozlabs.org/pipermail/linuxppc-dev/2006-December/029595.html

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Tested-by: Andreas Schwab <schwab@suse.de>
2006-12-30 14:26:59 +01:00
Stefan Richter
b2bb550c4a ieee1394: sbp2: pass REQUEST_SENSE through to the target
Delete some incorrect code, left over from the initial driver submission
in March 2001.

SBP-2 targets should provide sense data via the SBP-2 status block
(autosense).  We have to pass the REQUEST_SENSE command through to
targets which don't implement autosense, if there are any, and to
accomodate application clients which use this command.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-30 14:26:41 +01:00
Jean Delvare
3269711b76 i2c: Discard the i2c algo del_bus wrappers
They are all only calling i2c_del_adapter, so we may as well do
it directly.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
2006-12-10 21:21:33 +01:00
Josef Sipek
4db61081fa [PATCH] struct path: convert ieee1394
Signed-off-by: Josef Sipek <jsipek@fsl.cs.sunysb.edu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-08 08:28:46 -08:00
Stefan Richter
ec9b7e1044 ieee1394: sbp2: code formatting around work_struct stuff
Merge is finished, can bring the code in readable style again.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:23:25 +01:00
Stefan Richter
1e4f7bc8f8 ieee1394: nodemgr: remove a kcalloc
Was I sleepwalking when I wrote this?

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:12:16 +01:00
Stefan Richter
3015c73978 ieee1394: conditionally export ieee1394_bus_type
Follow-up to patch "Consolidate driver registering":
Since I plan the lifetime of Linux 2.6.20 to be the deprecation phase
of CONFIG_IEEE1394_EXPORT_FULL_API, it seems fair to keep all previously
exported symbols available with this option until this phase is over.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:12:02 +01:00
Ben Collins
ed30c26ee8 ieee1394: Consolidate driver registering
This patch consolidates some bookkeeping for driver registering. It
closely models what pci_register_driver() does. The main addition is
that the owner of the driver is set, so we get a proper symlink
for /sys/bus/ieee1394/driver/*/module.

Also moves setting of name and bus type into nodemgr. Because of this,
we can remove the EXPORT_SYMBOL for ieee1394_bus_type, since it's now
only used in ieee1394.ko.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:11:55 +01:00
Stefan Richter
9b7d9c096d ieee1394: sbp2: convert from PCI DMA to generic DMA
API conversion without change in functionality

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:11:43 +01:00
Stefan Richter
d41bba2d3a ieee1394: nodemgr: spaces to tabs
whitespace pedantry

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:11:28 +01:00
Stefan Richter
8252bbb136 ieee1394: nodemgr: fix deadlock in shutdown
If "modprobe ohci1394" was quickly followed by "modprobe -r ohci1394",
say with 1 second pause in between, the modprobe -r got stuck in
uninterruptible sleep in kthread_stop.  At the same time the knodemgrd
slept uninterruptibly in bus_rescan_devices_helper.  That's because
driver_detach took the semaphore of the PCI device and
bus_rescan_devices_helper wanted to take the semaphore of the FireWire
host device's parent, which is the same semaphore. This was a regression
since Linux 2.6.16, commit bf74ad5bc4,
"Hold the device's parent's lock during probe and remove".

The fix (or workaround) adds a dummy driver to the hpsb_host device. Now
bus_rescan_devices_helper won't scan the host device anymore.  This
doesn't hurt since we have no drivers which will bind to these devices
and it is unlikely that there will ever be such a driver.  The dummy
driver is befittingly presented as a representation of ieee1394 itself.

Fixes: http://bugzilla.kernel.org/show_bug.cgi?id=6706

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:10:23 +01:00
Stefan Richter
cec1a31196 ieee1394: nodemgr: remove duplicate assignment
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:06:05 +01:00
Luca Tettamanti
ff6a4cd2e1 sbp2: make 1bit bitfield unsigned
A signed single-bit bitfield doesn't make much sense. Make it unsigned.

Signed-off-by: Luca Tettamanti <kronos.it@gmail.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:05:47 +01:00
Stefan Richter
4e834da1da ieee1394: schedule *_oui sysfs attributes for removal
There is no manpower available to reform oui.db into a library for use
in more kernel subsystems.  The low ratio of usefulness to size and the
occasional need to update oui.db from IEEE's official list suggest to
drop oui.db.  I plan to make a userspace script available which
translates the remaining numeric sysfs attributes to names of
organizations.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:05:34 +01:00
Stefan Richter
e9429dfdc3 ieee1394: schedule unused symbol exports for removal
This also means that former parts of ieee1394's API will be subject to
change or removal.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:05:24 +01:00
Stefan Richter
861646f522 ieee1394: dv1394: schedule for feature removal
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:05:12 +01:00
Stefan Richter
9868e0ec03 ieee1394: raw1394: defer feature removal of old isoch interface
Known to be affected:
 - libdc1394: prefers video1394 for now, old-style raw1394 support might
   be dropped eventually
 - OpenH323 PWLib, AVC video input module: uses libraw1394's old API

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:04:59 +01:00
Stefan Richter
63cca59e89 ieee1394: ohci1394: call PMac code in shutdown only for proper machines
There has been an if(...) missing, for ages.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:04:35 +01:00
Stefan Richter
5370f1f5e9 ieee1394: ohci1394: reformat PPC_PMAC platform code
Adjust whitespace and line lengths

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:04:24 +01:00
Stefan Richter
48cfae44b4 ieee1394: ohci1394: add PPC_PMAC platform code to driver probe
Fixes http://bugzilla.kernel.org/show_bug.cgi?id=7431
iBook G3 threw a machine check exception and put the display backlight
to full brightness after ohci1394 was unloaded and reloaded.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:04:14 +01:00
Stefan Richter
58272c1c03 ieee1394: sbp2: wrap two functions into one
Move the body of a function into its only caller.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:04:03 +01:00
Stefan Richter
2a533b179d ieee1394: sbp2: update comment on things to do
Some people actually look at those comments.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:03:49 +01:00
Stefan Richter
cd641f68d6 ieee1394: sbp2: use list_move_tail()
It's OK to reorder list_del() and sbp2util_free_command_dma() here.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:03:38 +01:00
Stefan Richter
138c8af864 ieee1394: sbp2: more concise names for types and variables
"struct scsi_id_instance_data" represents a logical unit.
Rename it to "struct sbp2_lu", and "scsi_id" to "lu".
Rename some other variables too.
Wrap almost all lines after at most 80 columns.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 22:59:34 +01:00
Stefan Richter
9117c6dc43 ieee1394: sbp2: remove unused struct members
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 22:52:41 +01:00
Stefan Richter
28b066795f ieee1394: sbp2: proper unit in module parameter description
It's 2^20 bit/s, not 0.001 bit.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 22:52:29 +01:00
Stefan Richter
ca0c745399 ieee1394: sbp2: clean up sbp2_ namespace
Prepend sbp2*_ to anything globally defined in sbp2.c except for some
macros.  Strip sbp2_ from names of struct members.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 22:51:53 +01:00
Stefan Richter
5796aa7b11 ieee1394: sbp2: some conditions in queue_command are unlikely
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 22:49:39 +01:00
Stefan Richter
e8ca5668f1 ieee1394: sbp2: remove superfluous comments
And update and reformat remaining comments.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 22:45:41 +01:00
Stefan Richter
d19c776414 ieee1394: sbp2: delayed_work -> work_struct
This work is not delayed.

Also bring the code format in a state which reduces my work to merge
pending sbp2 patchs.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 22:40:33 +01:00
Stefan Richter
424a9642b8 ieee1394: sbp2: coding style of some macros
Adjust parentheses, indentation, line lengths.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 21:46:58 +01:00
Stefan Richter
edf1fb213e ieee1394: sbp2: remove debug macros
No need to keep them in released sources.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 21:46:48 +01:00
Stefan Richter
35644090d8 ieee1394: sbp2: consolidate log levels
Replace some calls to SBP2_ERR and SBP2_WARN by SBP2_INFO.
Remove logging macros SBP2_NOTICE and SBP2_WARN.
Remove direct usage of HPSB_ logging macros.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 21:46:40 +01:00
Stefan Richter
0b885449ac ieee1394: sbp2: remove duplicate code
The same case is handled further below in sbp2scsi_complete_command.
Note, the second version behaves slightly different but looks
preferable.  It's an extremely unlikely case by the way.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 21:46:30 +01:00
Stefan Richter
8c8009e69b ieee1394: sbp2: remove dead code
This has been within #if 0 for a long time and is wrong anyway.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 21:46:20 +01:00
Stefan Richter
ea42ea0f58 ieee1394: sbp2: clean up function declarations
Remove unnecessary function prototypes.
Remove variable names from function prototypes.
Move declarations from sbp2.h to sbp2.c.
Move definitions of driver templates together near the top of sbp2.c.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 21:46:10 +01:00
Stefan Richter
66743e061f ieee1394: sbp2: remove irritating log message
The queue depth can be read from /sys/bus/scsi/devices/*/queue_depth,
so don't log it.  And the hint about speed improvements is misleading,
at least under current kernels.  If serialization is switched off, read
performance is typically increased by less than 10%.  (I did not test
write performance recently.)  On the other hand, serialize_io=0 is not
yet safe due to some implementation issues that are not trivial to fix.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 21:45:58 +01:00
Alexey Dobriyan
c0f00e2797 ohci1394: shortcut irq printing
To print irq number no need to transform to string using %d, then print
using %s. Just use %d.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2006-12-07 21:44:27 +01:00
Stefan Richter
1f72cf5251 ieee1394: nodemgr: take it easy if bus_rescan_devices fails
This happens.  No need to log a BUG trace.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 21:44:15 +01:00
Eric Sesterhenn
bfe89d7245 drivers/ieee1394/*: use kmemdup()
Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 21:43:02 +01:00
Stefan Richter
5f8d17f602 ieee1394: ohci1394: proper log messages in suspend and resume
- correct thinko in one of my last commits: cannot use PRINT macro with
   ohci == NULL
 - add log messages on ohci == NULL and on pci_enable_device != 0
 - update log macros from patch "revert fail on error in suspend" to use
   PRINT and DBGMSG where possible

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 21:32:53 +01:00
Stefan Richter
2a3f8ad3a9 ieee1394: ohci1394: revert fail on error in suspend
Some errors during preparation for suspended state can be skipped with a
warning instead of a failure of the whole suspend transition, notably an
error in pci_set_power_state.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 21:32:36 +01:00
Randy Dunlap
def4d8733b ieee1394: only build OUI database files if config enabled
Only build IEEE1394 OUI database files if the config option is enabled.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 21:32:29 +01:00
Randy Dunlap
7f5880394c ieee1394: fix printk format warning
Fix printk format warning:
drivers/ieee1394/nodemgr.c:364: warning: long long unsigned int format, u64 arg (arg 3)

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 21:32:19 +01:00
Stefan Richter
b07375b155 ieee1394: nodemgr: revise semaphore protection of driver core data
- The list "struct class.children" is supposed to be protected by
   class.sem, not by class.subsys.rwsem.

 - nodemgr_remove_uds() iterated over nodemgr_ud_class.children without
   proper protection.  This was never observed as a bug since the code
   is usually only accessed by knodemgrd.  All knodemgrds are currently
   globally serialized.  But userspace can trigger this code too by
   writing to /sys/bus/ieee1394/destroy_node.

 - Clean up access to the FireWire bus type's subsys.rwsem:  Access it
   uniformly via ieee1394_bus_type.  Shrink rwsem protected regions
   where possible.  Expand them where necessary.  The latter wasn't a
   problem so far because knodemgr is globally serialized.

This should harden the interaction of ieee1394 with sysfs and lay ground
for deserialized operation of multiple knodemgrds and for implementation
of subthreads for parallelized scanning and probing.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 21:32:10 +01:00
Stefan Richter
7fdfc90945 ieee1394: nodemgr: reflect which return values are errors
Give better names to local variables.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 21:32:01 +01:00
Stefan Richter
b7cffc57a7 ieee1394: nodemgr: small fix after sysfs errors patch
One hunk in "ieee1394: handle sysfs errors" was wrong.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 21:31:51 +01:00
Stefan Richter
7b900c12cd dv1394: remove BKL contention
Purges the one remaining call to lock_kernel() from the 1394 subsystem.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 21:31:38 +01:00
Daniel Drake
75dcf5dc5a video1394: remove BKL contention
video1394 does not need to take the BKL. The data structures shared between
file_operations and interrupts are already protected through context-specific
spinlocks.

The only other danger is video1394_release() being called during another
operation, however this cannot happen because release is only ever invoked
when the last thread has closed the fd.

Signed-off-by: Daniel Drake <ddrake@brontes3d.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 21:31:25 +01:00