commit 972e6a993f278b416a8ee3ec65475724fc36feb2 upstream.
The usbhid driver has inconsistently duplicated code in its post-reset,
resume, and reset-resume pathways.
reset-resume doesn't check HID_STARTED before trying to
restart the I/O queues.
resume fails to clear the HID_SUSPENDED flag if HID_STARTED
isn't set.
resume calls usbhid_restart_queues() with usbhid->lock held
and the others call it without holding the lock.
The first item in particular causes a problem following a reset-resume
if the driver hasn't started up its I/O. URB submission fails because
usbhid->urbin is NULL, and this triggers an unending reset-retry loop.
This patch fixes the problem by creating a new subroutine,
hid_restart_io(), to carry out all the common activities. It also
adds some checks that were missing in the original code:
After a reset, there's no need to clear any halted endpoints.
After a resume, if a reset is pending there's no need to
restart any I/O until the reset is finished.
After a resume, if the interrupt-IN endpoint is halted there's
no need to submit the input URB until the halt has been
cleared.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Daniel Fraga <fragabr@gmail.com>
Tested-by: Daniel Fraga <fragabr@gmail.com>
CC: <stable@vger.kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Willy Tarreau <w@1wt.eu>
commit e470127e9606b1fa151c4184243e61296d1e0c0f upstream.
The critical section protected by usbhid->lock in hid_ctrl() is too
big and because of this it causes a recursive deadlock. "Too big" means
the case statement and the call to hid_input_report() do not need to be
protected by the spinlock (no URB operations are done inside them).
The deadlock happens because in certain rare cases drivers try to grab
the lock while handling the ctrl irq which grabs the lock before them
as described above. For example newer wacom tablets like 056a:033c try
to reschedule proximity reads from wacom_intuos_schedule_prox_event()
calling hid_hw_request() -> usbhid_request() -> usbhid_submit_report()
which tries to grab the usbhid lock already held by hid_ctrl().
There are two ways to get out of this deadlock:
1. Make the drivers work "around" the ctrl critical region, in the
wacom case for ex. by delaying the scheduling of the proximity read
request itself to a workqueue.
2. Shrink the critical region so the usbhid lock protects only the
instructions which modify usbhid state, calling hid_input_report()
with the spinlock unlocked, allowing the device driver to grab the
lock first, finish and then grab the lock afterwards in hid_ctrl().
This patch implements the 2nd solution.
Signed-off-by: Ioan-Adrian Ratiu <adi@adirat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 3af4e5a95184d6d3c1c6a065f163faa174a96a1d upstream.
It was reported that after 10-20 reboots, a usb keyboard plugged
into a docking station would not work unless it was replugged in.
Using usbmon, it turns out the interrupt URBs were streaming with
callback errors of -71 for some reason. The hid-core.c::hid_io_error was
supposed to retry and then reset, but the reset wasn't really happening.
The check for HID_NO_BANDWIDTH was inverted. Fix was simple.
Tested by reporter and locally by me by unplugging a keyboard halfway until I
could recreate a stream of errors but no disconnect.
Signed-off-by: Don Zickus <dzickus@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 2bacedada682d5485424f5227f27a3d5d6eb551c upstream.
New Genius MousePen i608X devices have a new id 0x501a instead of the
old 0x5011 so add a new #define with "_2" appended and change required
places.
The remaining two checkpatch warnings about line length
being over 80 characters are present in the original files too and this
patch was made in the same style (no line break).
Just adding a new id and changing the required places should make the
new device work without any issues according to the bug report in the
following url.
This patch was made according to and fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=67111
Signed-off-by: Giedrius Statkevičius <giedrius.statkevicius@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 684524d35fe8d13be1f2649633e43bd02c96c695 upstream.
BugLink: http://bugs.launchpad.net/bugs/1180881
This device needs to be added to the quirks list with HID_QUIRK_NO_INIT_REPORTS,
otherwise it causes 10 seconds timeout during report initialization.
[12431.828467] hid-multitouch 0003:0457:1013.0475: usb_submit_urb(ctrl) failed: -1
[12431.828507] hid-multitouch 0003:0457:1013.0475: timeout initializing reports
Signed-off-by: AceLan Kao <acelan.kao@canonical.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 8171a67d587a09e14a4949a81e070345fedcf410 upstream.
BugLink: http://bugs.launchpad.net/bugs/1180881
Synaptics large touchscreen doesn't support some of the report request
while initializing. The unspoorted request will make the device unreachable,
and will lead to the following usb_submit_urb() function call timeout.
So, add the IDs into HID_QUIRK_NO_INIT_REPORTS quirk.
Signed-off-by: AceLan Kao <acelan.kao@canonical.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 27ce405039bfe6d3f4143415c638f56a3df77dca upstream.
implement() is setting bytes in LE data stream. In case the data is not
aligned to 64bits, it reads past the allocated buffer. It doesn't really
change any value there (it's properly bitmasked), but in case that this
read past the boundary hits a page boundary, pagefault happens when
accessing 64bits of 'x' in implement(), and kernel oopses.
This happens much more often when numbered reports are in use, as the
initial 8bit skip in the buffer makes the whole process work on values
which are not aligned to 64bits.
This problem dates back to attempts in 2005 and 2006 to make implement()
and extract() as generic as possible, and even back then the problem
was realized by Adam Kroperlin, but falsely assumed to be impossible
to cause any harm:
http://www.mail-archive.com/linux-usb-devel@lists.sourceforge.net/msg47690.html
I have made several attempts at fixing it "on the spot" directly in
implement(), but the results were horrible; the special casing for processing
last 64bit chunk and switching to different math makes it unreadable mess.
I therefore took a path to allocate a few bytes more which will never make
it into final report, but are there as a cushion for all the 64bit math
operations happening in implement() and extract().
All callers of hid_output_report() are converted at the same time to allocate
the buffer by newly introduced hid_alloc_report_buf() helper.
Bruno noticed that the whole raw_size test can be dropped as well, as
hid_alloc_report_buf() makes sure that the buffer is always of a proper
size.
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Acked-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Pull HID updates from Jiri Kosina:
- hid driver transport cleanup, finalizing the long-desired decoupling
of core from transport layers, by Benjamin Tissoires and Henrik
Rydberg
- support for hybrid finger/pen multitouch HID devices, by Benjamin
Tissoires
- fix for long-standing issue in Logitech unifying driver sometimes not
inializing properly due to device specifics, by Andrew de los Reyes
- Wii remote driver updates to support 2nd generation of devices, by
David Herrmann
- support for Apple IR remote
- roccat driver now supports new devices (Roccat Kone Pure, IskuFX), by
Stefan Achatz
- debugfs locking fixes in hid debug interface, by Jiri Kosina
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: (43 commits)
HID: protect hid_debug_list
HID: debug: break out hid_dump_report() into hid-debug
HID: Add PID for Japanese version of NE4K keyboard
HID: hid-lg4ff add support for new version of DFGT wheel
HID: icade: u16 which never < 0
HID: clarify Magic Mouse Kconfig description
HID: appleir: add support for Apple ir devices
HID: roccat: added media key support for Kone
HID: hid-lenovo-tpkbd: remove doubled hid_get_drvdata
HID: i2c-hid: fix length for set/get report in i2c hid
HID: wiimote: parse reduced status reports
HID: wiimote: add 2nd generation Wii Remote IDs
HID: wiimote: use unique battery names
HID: hidraw: warn if userspace headers are outdated
HID: multitouch: force BTN_STYLUS for pen devices
HID: multitouch: append " Pen" to the name of the stylus input
HID: multitouch: add handling for pen in dual-sensors device
HID: multitouch: change touch sensor detection in mt_input_configured()
HID: multitouch: do not map usage from non used reports
HID: multitouch: breaks out touch handling in specific functions
...
If suspend callback fails in system sleep context, usb core will
ignore the failure and let the system sleep go ahead further, so this
patch doesn't recover device under this situation, otherwise
may cause resume() confused.
Acked-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fix build problem caused by typo introduced by 620ae90ed8
("HID: usbhid: quirk for MSI GX680R led panel").
Reported-by: fengguang.wu@intel.com
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This keyboard backlight device causes a 10 second delay to boot. Add it
to the quirk list with HID_QUIRK_NO_INIT_REPORTS.
This fixes Red Hat bugzilla https://bugzilla.redhat.com/show_bug.cgi?id=907221
Cc: stable@vger.kernel.org
Signed-off-by: Josh Boyer <jwboyer@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This device needs to be added to the quirks list with HID_QUIRK_NO_INIT_REPORTS,
otherwise it causes 10 seconds timeout during report initialization.
This fixes Red Hat bugzilla https://bugzilla.redhat.com/show_bug.cgi?id=806587
Cc: stable@vger.kernel.org
Signed-off-by: Josh Boyer <jwboyer@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Some drivers send the idle command directly to underlying device,
creating an unwanted dependency on the underlying transport layer.
This patch adds hid_hw_idle() to the interface, thereby removing
usbhid from the lion share of the drivers.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This removes most of the dependencies between hid drivers and usbhid.
The patch was constructed by replacing all occurences of
usbhid_wait_io() by its hid_hw_wait() counterpart.
Then, drivers not requiring USB_HID anymore have their USB_HID
dependency cleaned in the Kconfig file.
As of today, few drivers are still requiring an explicit USB layer
dependency:
* ntrig (a patch is on its way)
* multitouch (one patch following and another on its way)
* lenovo tpkbd
* roccat
* sony
The last three are two deeply using direct calls to the usb subsystem
to be able to be cleaned right now.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This allows the hid drivers to be independent from the transport layer.
The patch was constructed by replacing all occurences of
usbhid_submit_report() by its hid_hw_request() counterpart.
Then, drivers not requiring USB_HID anymore have their USB_HID
dependency cleaned in the Kconfig file.
Finally, few drivers still depends on USB_HID. Many of them
are requiring the io wait callback. They are found in the next patch.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
For the sensor-hub part:
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Some drivers need to wait for an io from the underlying device, creating
an unwanted dependency on the underlying transport layer. This patch adds
wait() to the interface, thereby removing usbhid from the lion share of
the drivers.
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Some drivers send reports directly to underlying device, creating an
unwanted dependency on the underlying transport layer. This patch adds
hid_hw_request() to the interface, thereby removing usbhid from the
lion share of the drivers.
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Patch to add the Formosa Industrial Computing, Inc. Infrared Receiver
[IR605A/Q] to hid-ids.h and hid-quirks.c. This IR receiver causes about a 10
second timeout when the usbhid driver attempts to initialze the device. Adding
this device to the quirks list with HID_QUIRK_NO_INIT_REPORTS removes the
delay.
Signed-off-by: Nicholas Santos <nicholas.santos@gmail.com>
[jkosina@suse.cz: fix ordering]
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
When the file has been open in non-blocking mode, EIO or ERESTARTSYS
would never be returned even if they should (for example when device
has been unplugged, you want EIO and not EAGAIN to be returned).
Move the O_NONBLOCK check after other checks have been performed.
Base on similar patch done to hidraw by
Founder Fang <founder.fang@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The USB recovery mode present in i.MX23 ROM emulates USB HID. It needs this
quirk to behave properly.
Even if the official branding of the chip is Freescale i.MX23, I named it
Sigmatel STMP3780 since that's what the chip really is and it even reports
itself as STMP3780.
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This patch adds support to Novatec wireless mouse (device ID 0603:1602).
Fixes bug https://bugzilla.kernel.org/show_bug.cgi?id=47031
Signed-off-by: Marco Biscaro <marcobiscaro2112@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
No need to check whether unsigned variable is less than 0.
CC: Jiri Kosina <jkosina@suse.cz>
CC: linux-usb@vger.kernel.org
CC: linux-input@vger.kernel.org
Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The dev_rdesc member of the hid_device structure is meant to store the original
report descriptor received from the device, but it is currently passed to any
report_fixup method before it is copied to the rdesc member. This patch uses a
temporary buffer to shield dev_rdesc from the side effects of many HID drivers'
report_fixup implementations.
usbhid's hid_post_reset checks the report descriptor currently returned by the
device against a descriptor that may have been modified by a driver's
report_fixup method. That leaves some devices nonfunctional after a resume, with
a "reset_resume error 1" reported. This patch checks the new descriptor against
the unmodified dev_rdesc instead and uses the original, instead of modified,
report size.
BugLink: http://bugs.launchpad.net/bugs/1049623
Signed-off-by: Kevin Daughtridge <kevin@kdau.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
For some reason, we had two IDs for the QUANTA 3001 touchscreen controller,
one USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001 and one
USB_DEVICE_ID_PIXART_IMAGING_INC_OPTICAL_TOUCH_SCREEN. As this has caused
confusion, remove USB_DEVICE_ID_PIXART_IMAGING_INC_OPTICAL_TOUCH_SCREEN
completely, and fix places where it was used to refer to
USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001.
Signed-off-by: Simon Farnsworth <simon.farnsworth@onelan.co.uk>
Acked-by: Henrik Rydberg <rydberg@euromail.se>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This patch (as1603) adds a NOGET quirk for the Eaton Ellipse MAX UPS
device. (The USB IDs were already present in hid-ids.h, apparently
under a different name.)
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Laurent Bigonville <l.bigonville@edpnet.be>
CC: <stable@vger.kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The USB recovery mode present in i.MX28 ROM emulates USB HID.
It needs this quirk to behave properly.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chen Peter <B29397@freescale.com>
Cc: Greg KH <greg@kroah.com>
Cc: Jiri Kosina <jkosina@suse.cz>
[jkosina@suse.cz: fix alphabetical ordering]
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This patch (as1597) fixes some of the error paths in usbhid's suspend
routine. The driver was not careful to restart everything that might
have been stopped, in cases where a suspend failed.
For example, once the HID_SUSPENDED flag is set, an output report
submission would not restart the corresponding URB queue. If a
suspend fails, it's therefore necessary to check whether the queues
need to be restarted.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: Oliver Neukum <oliver@neukum.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This patch (as1596) improves the queue-restart logic in usbhid by
checking to see if the device is suspended or a reset is about to
occur. There's no point submitting an URB if either of those is
true.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: Oliver Neukum <oliver@neukum.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This patch (as1595) improves the usbhid driver by using the
HID_SUSPENDED bitflag to indicate that the device is suspended rather
than using HID_REPORTED_IDLE, which the patch removes.
Since HID_SUSPENDED was not being used for anything, and since the
name "HID_REPORTED_IDLE" doesn't convey much meaning, the end result
is easier to read and understand.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: Oliver Neukum <oliver@neukum.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This patch (as1594) simplifies the usbhid driver by inlining a couple
of routines. As a result of an earlier patch, irq_out_pump_restart()
and ctrl_pump_restart() are each used in only one place. Since they
don't really do what their names say, and since they each involve only
about two lines of actual code, there's no reason to keep them as
separate functions.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: Oliver Neukum <oliver@neukum.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This patch (as1593) fixes some logic errors in the usbhid driver
relating to runtime PM. The driver does not balance its calls to
usb_autopm_get_interface_async() and usb_autopm_put_interface_async().
For example, when the control queue is restarted the driver does a
_get. But the resume won't happen immediately, so the driver leaves
the queue stopped. When the resume does occur, the queue is restarted
and a second _get occurs, with no balancing _put.
The patch fixes the problem by rearranging the logic for restarting
the queues. All the _get/_put calls and bitflag settings in
__usbhid_submit_report() are moved into the queue-restart routines. A
balancing _put call is added for the case where the queue is still
suspended. A call to irq_out_pump_restart(), which doesn't take all
the right actions for restarting the irq-OUT queue, is replaced by a
call to usbhid_restart_out_queue(), which does. Similarly for
ctrl_pump_restart().
Finally, new code is added to prevent an autosuspend from happening
every time an URB is cancelled, and the comments explaining what
happens when an URB needs to be cancelled are expanded and clarified.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: Oliver Neukum <oliver@neukum.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This patch (as1592) fixes an obscure problem in the usbhid driver.
Under some circumstances, a control or interrupt-OUT URB can be
submitted twice. This will happen if the first submission fails; the
queue pointers aren't updated, so the next time the queue is restarted
the same URB will be submitted again.
The problem is that raw_report gets deallocated during the first
submission. The second submission will then dereference and try to
free an already-freed region of memory. The patch fixes the problem
by setting raw_report to NULL when it is deallocated and checking for
NULL before dereferencing it.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: Oliver Neukum <oliver@neukum.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The Sennheiser BTD500USB composit device requires the
HID_QUIRK_NOGET flag to be set for working proper. Without the
flag the device crashes during hid intialization.
Signed-off-by: Frank Kunz <xxxxxmichl@googlemail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The generic HID driver is obviously not a special driver, so move it
outside of the special drivers menu. Explain the usage and make the
default follow the HID setting. This should simplify migration from
older kernels. While at it, remove the redundant HID_SUPPORT option
and modify the HID and USB_HID entries to better explain the bus
structure.
Reported-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Pull HID subsystem updates from Jiri Kosina:
"Apart from various driver updates and added support for a number of
new devices (mostly multitouch ones, but not limited to), there is one
change that is worth pointing out explicitly: creation of HID device
groups and proper autoloading of hid-multitouch, implemented by Henrik
Rydberg."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: (50 commits)
HID: wacom: fix build breakage without CONFIG_LEDS_CLASS
HID: waltop: Extend barrel button fix
HID: hyperv: Set the hid drvdata correctly
HID: wacom: Unify speed setting
HID: wacom: Add speed setting for Intuos4 WL
HID: wacom: Move Graphire raport header check.
HID: uclogic: Add support for UC-Logic TWHL850
HID: explain the signed/unsigned handling in hid_add_field()
HID: handle logical min/max signedness properly in parser
HID: logitech: read all 32 bits of report type bitfield
HID: wacom: Add LED selector control for Wacom Intuos4 WL
HID: hid-multitouch: fix wrong protocol detection
HID: wiimote: Fix IR data parser
HID: wacom: Add tilt reporting for Intuos4 WL
HID: multitouch: MT interface matching for Baanto
HID: hid-multitouch: Only match MT interfaces
HID: Create a common generic driver
HID: hid-multitouch: Switch to device groups
HID: Create a generic device group
HID: Allow bus wildcard matching
...
dbg() was a very old USB-specific macro that should no longer
be used. This patch removes it from being used in the driver
and uses dev_dbg() instead.
CC: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
On some HCDs usb_unlink_urb() can directly call the
completion handler. That limits the spinlocks that can
be taken in the handler to locks not held while calling
usb_unlink_urb()
To prevent a race with resubmission, this patch exposes
usbcore's infrastructure for blocking submission, uses it
and so drops the lock without causing a race in usbhid.
Signed-off-by: Oliver Neukum <oneukum@suse.de>
Acked-by: Jiri Kosina <jkosina@suse.cz>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Luca Stefani
LuK1337
Alan Stern
Ioan-Adrian Ratiu
Don Zickus
Giedrius Statkevičius
AceLan Kao
Forest Bond
Jiri Kosina
Vasily Titskiy
Linus Torvalds
Greg Kroah-Hartman
Ming Lei
Josh Boyer
Benjamin Tissoires
Benjamin Tissoires
Henrik Rydberg
Nicholas Santos
Marek Vasut
Marco Biscaro
Tushar Behera
Kevin Daughtridge
Simon Farnsworth
Frank Kunz
Oliver Neukum