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37,822 commits

Author SHA1 Message Date
Adrian Bunk
c52c4d063e V4L/DVB (7102): make tuner-core.c:tuner_list static
tuner_list can become static - and it's anyway a way too generic name
for a global variable - see commit b00ef4b8d8
for a completely different global variable of the same name I just made
static...

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-02-18 11:15:04 -03:00
Adrian Bunk
805d92dfa6 V4L/DVB (7100): frontends/tda18271-common.c: fix off-by-one
This patch fixes an off-by-one error spotted by the Coverity checker.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Reviewed-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-02-18 11:15:02 -03:00
Matthias Schwarzott
0e8f4cc5c8 V4L/DVB (7097): saa7134-dvb: add missing dvb_attach call (for tda10046_attach)
saa7134-dvb: add missing dvb_attach around tda10046_attach

This patch adds a possibly missing dvb_attach for tda10046_attach.
This removes the hard dependency of saa7134-dvb on tda1004x module.

Signed-off-by: Matthias Schwarzott <zzam@gentoo.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-02-18 11:15:00 -03:00
Mauro Carvalho Chehab
e08a8c9dc7 V4L/DVB (7093): radio-sf16fmi: fix request_region()
isapnp_fmi_probe attaches device. However, if request_region() fails, the
device isn't disattached.

Reviewed-by: Douglas Schilling Landgraf <dougsland@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-02-18 11:14:59 -03:00
Douglas Schilling Landgraf
dd49f30ca0 V4L/DVB (7092): radio-sf16fmr2: fix request_region() validation [bugzilla 9699]
This patch changed the request_region() validation to avoid invalid return.
Thanks to Roland Kletzing <devzero@web.de> for bug report and data collection.

Signed-off-by: Douglas Schilling Landgraf <dougsland@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-02-18 11:14:59 -03:00
Tobias Lorenz
0e3301ec23 V4L/DVB (7091): radio-si470x improvements and seldom problem fixed in tuning functions
I updated the radio-si470x driver another time. Here are the commented history entries:

- number of seek_retries changed to tune_timeout
The last versions checked for the end of frequency tuning by polling a si470x register.
Therefore polling depended on the usb utilization.
This was changed to have a constant timeout now.

- fixed problem with incomplete tune operations by own buffers
The last version used a shared buffer to assembly the USB HID reports.
It sometimes happened, that multiple functions were modifing this buffer simultanuously.
When sending such reports, the hardware returned USB stalls (-EPIPE).
Now buffers of the correct size (smaller than before) are allocated as local variables.

- optimization of variables
The size of some variables has been reduced to allow the compiler to generate more optimized code.

- improved error logging
At some important location, error checking was improved.
Especially the usb transfers to access si470x registers and the tuning functions were modified.

Signed-off-by: Tobias Lorenz <tobias.lorenz@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-02-18 11:14:59 -03:00
Jaime Velasco Juan
2de3a5a5c5 V4L/DVB (7090): V4L: stkwebcam: use v4l_compat_ioctl32
Signed-off-by: Jaime Velasco Juan <jsagarribay@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-02-18 11:14:58 -03:00
Jaime Velasco Juan
1fdd61c022 V4L/DVB (7089): V4L: stkwebcam: Power management support
Signed-off-by: Jaime Velasco Juan <jsagarribay@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-02-18 11:14:58 -03:00
Jaime Velasco Juan
1112fb68ae V4L/DVB (7088): V4L: stkwebcam: Add support for YUYV format
Signed-off-by: Jaime Velasco Juan <jsagarribay@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-02-18 11:14:57 -03:00
Cyrill Gorcunov
0ed464e13e V4L/DVB (7086): driver: tcm825x - fix logical typo error
This patch does fix potential NULL pointer dereference
due to logical typo error.

The issue is pointed out by
Guennadi Liakhovetski <g.liakhovetski@pengutronix.de>


Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
CC: Sakari Ailus <sakari.ailus@nokia.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-02-18 11:14:57 -03:00
Hermann Pitton
29e4e05041 V4L/DVB (7085): saa7134: detect the LifeView FlyDVB-T Hybrid Mini PCI
Thanks to Angelo Lisco for his initial patch we missed and to
Ahmet Dogan Ugurel confirming such a device functional.

Signed-off-by: Hermann Pitton <hermann-pitton@arcor.de>
Signed-off-by: Hartmut Hackmann <hartmut.hackmann@t-online.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-02-18 11:14:57 -03:00
Hermann Pitton
728b92a230 V4L/DVB (7084): saa7134: add support for the Medion / Creatix CTX948 card
This adds support for analog inputs and DVB-T.
Good sensitivity for DVB-T currently needs to use analog TV first.
DVB-S support is not yet completed, but is on the way.

Signed-off-by: Hermann Pitton <hermann-pitton@arcor.de>
Signed-off-by: Hartmut Hackmann <hartmut.hackmann@t-online.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-02-18 11:14:56 -03:00
Hermann Pitton
ad1ef131c3 V4L/DVB (7083): saa7134: enable radio and external analog audio-in on the md2819
It also enumerates now the separate composite input at first
and adds mute ability to radio and external audio-in.

Many thanks to Daftcho Tabakov for reporting the flaws and testing.

Signed-off-by: Hermann Pitton <hermann-pitton@arcor.de>
Signed-off-by: Hartmut Hackmann <hartmut.hackmann@t-online.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-02-18 11:14:56 -03:00
Hermann Pitton
4ba243734a V4L/DVB (7082): support for Twinhan Hybrid DTV-DVB 3056 PCI
S-Video is unconfirmed, but likely correct.
The remote is not yet investigated.

Thanks go to Sioux for providing code and asking to fix the auto
detection.

Signed-off-by: sioux <sioux_it@libero.it>
Signed-off-by: Hermann Pitton <hermann-pitton@arcor.de>
Signed-off-by: Hartmut Hackmann <hartmut.hackmann@t-online.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-02-18 11:14:55 -03:00
Antoine Jacquet
c0e0aff977 V4L/DVB (7081): zr364xx: add support for Creative DiVi CAM 516
Signed-off-by: Antoine Jacquet <royale@zerezo.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-02-18 11:14:54 -03:00
Antoine Jacquet
71c044752c V4L/DVB (7080): zr364xx: add support for Pentax Optio 50
Signed-off-by: Antoine Jacquet <royale@zerezo.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-02-18 11:14:54 -03:00
Akinobu Mita
46c9fc861f V4L/DVB (7076): bt878: include KERN_ facility level
printk should use KERN_* levels.

CC: Manu Abraham <manu@linuxtv.org>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-02-18 11:14:53 -03:00
Mauro Carvalho Chehab
a348d2005d V4L/DVB (7049): Remove sound/driver.h
sound/driver.h is already included by sound/core.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-02-18 11:14:53 -03:00
Mauro Carvalho Chehab
057596eea8 V4L/DVB (7133): Fix Kconfig dependencies
As pointed by Adrian Bunk, with I2C=m and VIDEO_DEV=y, videodev brokes.

This patch moves the functions that videodev needs from v4l2-common. It also
fixes some Kconfig changes.

After this patch, I2C=m / VIDEO_DEV=y will make v4l2 core statically linked
into kernel. v4l2-common will be m, and all V4L drivers will also be m.

This approach is very conservative, since it is possible to have V4L drivers
that don't need I2C or v4l2-common. The better is to map what drivers really
need v4l2-common, making them to select v4l2-common, and allowing the others to
be 'y', 'm' and 'n'.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-02-18 11:14:53 -03:00
Mauro Carvalho Chehab
1a4e30c3ea V4L/DVB (7119): Remove obsolete code from v4l2-common
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-02-18 11:14:51 -03:00
Mauro Carvalho Chehab
a9254475bb V4L/DVB (7115): Fix bug #9833: regression when compiling V4L without I2C
Adrian Bunk reported:

> > Commit 8ffbc65594 causes the following
> > compile error with CONFIG_VIDEO_DEV=y/m, CONFIG_I2C=n:
> >
> > <--  snip  -->
> >
> > ...
> >   MODPOST 26 modules
> > ERROR: "i2c_attach_client" [drivers/media/video/v4l2-common.ko] undefined!
> > make[2]: *** [__modpost] Error 1
> >
> > <--  snip  -->

...

And what should happen if CONFIG_VIDEO_DEV=y, CONFIG_I2C=m?

CC: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-02-18 11:14:50 -03:00
Rudolf Marek
ae770152c8 hwmon: (coretemp) Add Penryn CPU to coretemp
This patch adds support for family 0x17, which has Penryn Core. It should also
cover the 8 cores Xeons.

Can someone test please? I think it should work.

Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2008-02-17 22:08:37 -05:00
Rudolf Marek
118a887188 hwmon: (coretemp) Add TjMax detection for mobile CPUs
Following patch will finally solve the detection of Intel Mobile CPUs which
share same CPUID with Desktop/Server CPUs. We need this information to test
some bit so we know if TjMax is 100C or 85C. Intel claims this works for mobiles
only, respect that and set for desktops the TjMax to 100C. Intel provided some
table on their wiki based on my chat with them at:
http://softwarecommunity.intel.com/isn/Community/en-US/forums/30247249/ShowThread.aspx#30247249

Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2008-02-17 21:57:28 -05:00
Riki Oktarianto
cd19ba1391 hwmon: (applesmc) sensors set for MacBook2
On my mid-2007 MacBook2, reading Ts0P sensor always failed with this message:
applesmc: wait status failed: 5 != 50.

So I assume that there's no such Ts0p sensor in this model (please confirm,
anyone). If there's the case, then we need a new set of sensors defined for
MacBook2.

Signed-off-by: Riki Oktarianto <rkoktarianto@gmail.com>
Cc: Nicolas Boichat <nicolas@boichat.ch>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2008-02-17 15:04:14 -05:00
Tobias Klauser
5910a9b2b1 hwmon: (thmc50) Storage class should be before const qualifier
The C99 specification states in section 6.11.5:

The placement of a storage-class specifier other than at the
beginning of the declaration specifiers in a declaration is an
obsolescent feature.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2008-02-17 12:11:50 -05:00
Sam Ravnborg
ba7c1927aa hwmon: (coretemp) fix section mismatch warning
Fix following warning:
WARNING: vmlinux.o(.text+0xebfd04): Section mismatch in reference from the function coretemp_cpu_callback() to the function .cpuinit.text:coretemp_device_add()

coretemp_cpu_callback() are only used inside a
HOTPLUG_CPU block so annotate it __cpuinit.
The notifier referencing the function are annotated
__refdata to silence warning from the exit function.
The unregister function do not use the embedded pointer
but clears the variable so the annotation is OK.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2008-02-17 11:26:55 -05:00
Rudolf Marek
6369a2887a hwmon: (coretemp) Add maximum cooling temperature readout
Following patch will add reporting of maximum temperature, at which all fans
should spin full speed. It may be non-physical temperature on Desktop/Server CPUs.

Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2008-02-17 10:21:39 -05:00
Jean Delvare
1d5f2c16c6 hwmon: (adm1026) Properly terminate sysfs groups
The missing NULL at the end of two sysfs file groups causes a kernel
crash when calling sysfs_create_group().

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2008-02-17 09:27:19 -05:00
Roger Lucas
af865765a9 hwmon: (vt8231) Update maintainer email address
Signed-off-by: Roger Lucas <vt8231@hiddenengine.co.uk>

(modified MAINTAINERS entry also - MMH)

Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2008-02-17 09:27:19 -05:00
Jean Delvare
2d1374cad5 hwmon: (vt8231) Add individual alarm files
The new libsensors needs these individual alarm files.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
CC: Roger Lucas <vt8231@hiddenengine.co.uk>
Acked-by: Juerg Haefliger <juergh at gmail.com>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2008-02-17 09:27:18 -05:00
Jean Delvare
13ff05e9f8 hwmon: (via686a) Add individual alarm files
The new libsensors needs these individual alarm files.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Juerg Haefliger <juergh at gmail.com>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2008-02-17 09:27:18 -05:00
Jean Delvare
1f08af7ea9 hwmon: (smsc47m1) Add individual alarm files
The new libsensors needs these individual alarm files.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Juerg Haefliger <juergh at gmail.com>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2008-02-17 09:27:18 -05:00
Jean Delvare
71062ffcd5 hwmon: (max1619) Add individual alarm and fault files
The new libsensors needs these individual alarm and fault files.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Juerg Haefliger <juergh at gmail.com>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2008-02-17 09:27:18 -05:00
Jean Delvare
6cb59e915d hwmon: (lm92) Add individual alarm files
The new libsensors needs these individual alarm files.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Juerg Haefliger <juergh at gmail.com>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2008-02-17 09:27:18 -05:00
Holger Schurig
ac2bf5bdc6 [ARM] 4828/1: fix 3 warnings in drivers/video/pxafb.c
* Silence a debug output.
* Silence three sparse warnings, one still left.

Signed-off-by: Holger Schurig <hs4233@mail.mn-solutions.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-17 10:42:09 +00:00
Holger Schurig
d6a7b5f84b [ARM] 4827/1: fix two warnings in drivers/i2c/busses/i2c-pxa.c
This fixes two warnings:

* unused static defined function decode_ICR() when
  compiled without CONFIG_I2C_PXA_SLAVE
* a sparse warning about a void function returning
  something

Signed-off-by: Holger Schurig <hs4233@mail.mn-solutions.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-17 10:42:07 +00:00
Chien Tung
edd2fd643c RDMA/nes: Fix VLAN support
We need to account for the VLAN header size in nes_netdev_change_mtu()
and nes_netdev_init().  Also, add spin lock/unlock during VLAN RX
registration so only one process can assign VLAN group for a given
interface at a time.

Signed-off-by: Chien Tung <ctung@neteffect.com>
Signed-off-by: Glenn Streiff <gstreiff@neteffect.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-02-16 21:16:33 -08:00
Stefan Richter
e80de3704a firewire: fw-sbp2: enforce a retry of __scsi_add_device if bus generation changed
fw-sbp2 is unable to reconnect while performing __scsi_add_device
because there is only a single workqueue thread context available for
both at the moment.  This should be fixed eventually.

An actual failure of __scsi_add_device is easy to handle, but an
incomplete execution of __scsi_add_device with an sdev returned would
remain undetected and leave the SBP-2 target unusable.

Therefore we use a workaround:  If there was a bus reset during
__scsi_add_device (i.e. during the SCSI probe), we remove the new sdev
immediately, log out, and attempt login and SCSI probe again.

Tested-by: Jarod Wilson <jwilson@redhat.com> (earlier version)
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-02-16 15:40:35 +01:00
Stefan Richter
7bb6bf7c8b firewire: fw-sbp2: sort includes
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-02-16 15:40:35 +01:00
Stefan Richter
ce896d95cc firewire: fw-sbp2: logout and login after failed reconnect
If fw-sbp2 was too late with requesting the reconnect, the target would
reject this.  In this case, log out before attempting the reconnect.
Else several firmwares will deny the re-login because they somehow
didn't invalidate the old login.

Also, don't retry reconnects in this situation.  The retries won't
succeed either.

These changes improve chances for successful re-login and shorten the
period during which the logical unit is inaccessible.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Jarod Wilson <jwilson@redhat.com>
2008-02-16 15:40:35 +01:00
Stefan Richter
0fa6dfdb0a firewire: fw-sbp2: don't add scsi_device twice
When a reconnect failed but re-login succeeded, __scsi_add_device was
called again.

In those cases, __scsi_add_device succeeded and returned the pointer to
the existing scsi_device.  fw-sbp2 then continued orderly, except that
it missed to call sbp2_cancel_orbs.  SCSI core would call fw-sbp2's
eh_abort_handler eventually if there had been an outstanding command.

This patch avoids the needless lookups and temporary allocations in SCSI
core and I/O stall and timeout until eh_abort_handler hits.

Also, __scsi_add_device tolerating calls for devices which already exist
is undocumented behavior on which we shouldn't rely.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Jarod Wilson <jwilson@redhat.com>
2008-02-16 15:40:35 +01:00
Stefan Richter
48f18c761c firewire: fw-sbp2: log bus_id at management request failures
for easier readable logs if more than one SBP-2 device is present.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Jarod Wilson <jwilson@redhat.com>
2008-02-16 15:40:34 +01:00
Stefan Richter
e0e6021555 firewire: fw-sbp2: wait for completion of fetch agent reset
Like the old sbp2 driver, wait for the write transaction to the
AGENT_RESET to complete before proceeding (after login, after reconnect,
or in SCSI error handling).

There is one occasion where AGENT_RESET is written to from atomic
context when getting DEAD status for a command ORB.  There we still
continue without waiting for the transaction to complete because this
is more difficult to fix...

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-02-16 15:40:34 +01:00
Stefan Richter
d94a983526 ieee1394: sbp2: add INQUIRY delay workaround
Add the same workaround as found in fw-sbp2 for feature parity and
compatibility of the workarounds module parameter.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Jarod Wilson <jwilson@redhat.com>
2008-02-16 15:40:34 +01:00
Stefan Richter
9220f19462 firewire: fw-sbp2: add INQUIRY delay workaround
Several different SBP-2 bridges accept a login early while the IDE
device is still powering up.  They are therefore unable to respond to
SCSI INQUIRY immediately, and the SCSI core has to retry the INQUIRY.
One of these retries is typically successful, and all is well.

But in case of Momobay FX-3A, the INQUIRY retries tend to fail entirely.
This can usually be avoided by waiting a little while after login before
letting the SCSI core send the INQUIRY.  The old sbp2 driver handles
this more gracefully for as yet unknown reasons (perhaps because it
waits for fetch agent resets to complete, unlike fw-sbp2 which quickly
proceeds after requesting the agent reset).  Therefore the workaround is
not as much necessary for sbp2.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Jarod Wilson <jwilson@redhat.com>
2008-02-16 15:40:34 +01:00
Stefan Richter
fa6e697b85 firewire: log GUID of new devices
This should help to interpret user reports.  E.g. one can look up the
vendor OUI (first three bytes of the GUID) and thus tell what is what.

Also simplifies the math in the GUID sysfs attribute.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Jarod Wilson <jwilson@redhat.com>
2008-02-16 15:40:34 +01:00
Stefan Richter
be6f48b017 firewire: fw-sbp2: don't retry login or reconnect after unplug
If a device is being unplugged while fw-sbp2 had a login or reconnect on
schedule, it would take about half a minute to shut the fw_unit down:

    Jan 27 18:34:54 stein firewire_sbp2: logged in to fw2.0 LUN 0000 (0 retries)
    <unplug>
    Jan 27 18:34:59 stein firewire_sbp2: sbp2_scsi_abort
    Jan 27 18:34:59 stein scsi 25:0:0:0: Device offlined - not ready after error recovery
    Jan 27 18:35:01 stein firewire_sbp2: orb reply timed out, rcode=0x11
    Jan 27 18:35:06 stein firewire_sbp2: orb reply timed out, rcode=0x11
    Jan 27 18:35:12 stein firewire_sbp2: orb reply timed out, rcode=0x11
    Jan 27 18:35:17 stein firewire_sbp2: orb reply timed out, rcode=0x11
    Jan 27 18:35:22 stein firewire_sbp2: orb reply timed out, rcode=0x11
    Jan 27 18:35:27 stein firewire_sbp2: orb reply timed out, rcode=0x11
    Jan 27 18:35:32 stein firewire_sbp2: orb reply timed out, rcode=0x11
    Jan 27 18:35:32 stein firewire_sbp2: failed to login to fw2.0 LUN 0000
    Jan 27 18:35:32 stein firewire_sbp2: released fw2.0

After this patch, typically only a few seconds spent in __scsi_add_device
remain:

    Jan 27 19:05:50 stein firewire_sbp2: logged in to fw2.0 LUN 0000 (0 retries)
    <unplug>
    Jan 27 19:05:56 stein firewire_sbp2: sbp2_scsi_abort
    Jan 27 19:05:56 stein scsi 33:0:0:0: Device offlined - not ready after error recovery
    Jan 27 19:05:56 stein firewire_sbp2: released fw2.0

The benefit of this is less noise in the syslog.  It furthermore avoids
a few wasted CPU cycles and needlessly prolonged lifetime of a few
driver objects.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Jarod Wilson <jwilson@redhat.com>
2008-02-16 15:40:33 +01:00
Stefan Richter
96b19062e7 firewire: fix "kobject_add failed for fw* with -EEXIST"
There is a race between shutdown and creation of devices:  fw-core may
attempt to add a device with the same name of an already existing
device.  http://bugzilla.kernel.org/show_bug.cgi?id=9828

Impact of the bug:  Happens rarely (when shutdown of a device coincides
with creation of another), forces the user to unplug and replug the new
device to get it working.

The fix is obvious:  Free the minor number *after* instead of *before*
device_unregister().  This requires to take an additional reference of
the fw_device as long as the IDR tree points to it.

And while we are at it, we fix an additional race condition:
fw_device_op_open() took its reference of the fw_device a little bit too
late, hence was in danger to access an already invalid fw_device.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-02-16 15:40:33 +01:00
Stefan Richter
1b9c12ba2f firewire: fw-sbp2: fix logout before login retry
This fixes a "can't recognize device" kind of bug.

If the SCSI INQUIRY failed and hence __scsi_add_device failed due to a
bus reset, we tried a logout and then waited for the already scheduled
login work to happen.  So far so good, but the generation used for the
logout was outdated, hence the logout never reached the target.  The
target might therefore deny the subsequent relogin attempt, which would
also leave the target inaccessible.

Therefore fetch a fresh device->generation for the logout.  Use memory
barriers to prevent our plan being foiled by compiler or hardware
optimizations.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-02-16 15:40:32 +01:00
Stefan Richter
05cca73814 firewire: fw-sbp2: unsigned int vs. unsigned
Standardize on "unsigned int" style.
Sort some struct members thematically.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-02-16 15:40:32 +01:00