commit 13054abbaa upstream.
Ring buffer implementation in hid_debug_event() and hid_debug_events_read()
is strange allowing lost or corrupted data. After commit 717adfdaf1
("HID: debug: check length before copy_to_user()") it is possible to enter
an infinite loop in hid_debug_events_read() by providing 0 as count, this
locks up a system. Fix this by rewriting the ring buffer implementation
with kfifo and simplify the code.
This fixes CVE-2019-3819.
v2: fix an execution logic and add a comment
v3: use __set_current_state() instead of set_current_state()
Link: https://bugzilla.redhat.com/show_bug.cgi?id=1669187
Cc: stable@vger.kernel.org # v4.18+
Fixes: cd667ce247 ("HID: use debugfs for events/reports dumping")
Fixes: 717adfdaf1 ("HID: debug: check length before copy_to_user()")
Signed-off-by: Vladis Dronov <vdronov@redhat.com>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 6ae16dfb61 ]
In lenovo_probe_tpkbd(), the function of_led_classdev_register() could
return an error value that is unchecked. The fix adds these checks.
Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 4050207485 ]
The 258a:6a88 keyboard-dock shipped with the Prowise PT301 tablet is
likely another ITE based design. The controller die is directly bonded
to the PCB with a blob of black glue on top so there are no markings and
the 258a vendor-id used is unknown anywhere. But the keyboard has the
exact same hotkeys mapped to Fn+F1 - F10 as the other ITE8595 keyboard
I have *and* it has the same quirky behavior wrt the rfkill hotkey.
Either way as said this keyboard has the same quirk for its rfkill /
airplane mode hotkey as the ITE 8595 chip, it only sends a single release
event when pressed and released, it never sends a press event.
This commit adds the 258a:6a88 USB id to the hid-ite id-table, fixing
the rfkill key not working on this keyboard.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 10f91c73cc ]
It makes little sense but still possible to put Hyper-V guests into
suspend-to-idle state. To wake them up two wakeup sources were registered
in the past: hyperv-keyboard and hid-hyperv. However, since
commit eed4d47efe ("ACPI / sleep: Ignore spurious SCI wakeups from
suspend-to-idle") pm_wakeup_event() from these devices is ignored. Switch
to pm_wakeup_hard_event() API as these devices are actually the only
possible way to wakeup Hyper-V guests.
Fixes: eed4d47efe (ACPI / sleep: Ignore spurious SCI wakeups from suspend-to-idle)
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: K. Y. Srinivasan <kys@microsoft.com>
Acked-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
commit 868613f1c0 upstream.
SNES RetroPort and RetroPad register only 4 gamepad buttons
when they should register all 8 buttons. This is described here:
https://ask.fedoraproject.org/en/question/128102
This is happening because of:
Commit 190d7f02ce ("HID: input: do not increment usages when
duplicate is found")
Here, I add the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE
(created for backward compatibility with the change in 190d7f02ce)
for the two products.
Tested with both RetroPort and RetroPad.
Cc: stable@vger.kernel.org # v4.18+
Signed-off-by: Nic Soudée <nsoudee@gmail.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 12d43aacf9 ]
Cirque Touchpad/Pointstick combo is similar to Alps devices, it requires
MT_CLS_WIN_8_DUAL to expose its pointstick as a mouse.
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 4d26d1d1e8 ]
This reverts commit 336fd4f5f2.
Please note that `strlcpy()` does *NOT* do what you think it does.
strlcpy() *ALWAYS* reads the full input string, regardless of the
'length' parameter. That is, if the input is not zero-terminated,
strlcpy() will *READ* beyond input boundaries. It does this, because it
always returns the size it *would* copy if the target was big enough,
not the truncated size it actually copied.
The original code was perfectly fine. The hid device is
zero-initialized and the strncpy() functions copied up to n-1
characters. The result is always zero-terminated this way.
This is the third time someone tried to replace strncpy with strlcpy in
this function, and gets it wrong. I now added a comment that should at
least make people reconsider.
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 0fd791841a ]
The Motorola/Zebra Symbol DS4308-HD is a handheld USB barcode scanner
which does not have a battery, but reports one anyway that always has
capacity 2.
Let's apply the IGNORE quirk to prevent it from being treated like a
power supply so that userspaces don't get confused that this
accessory is almost out of power and warn the user that they need to charge
their wired barcode scanner.
Reported here: https://bugs.chromium.org/p/chromium/issues/detail?id=804720
Signed-off-by: Benson Leung <bleung@chromium.org>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
commit 0145b50566 upstream.
Before this commit sensor_hub_input_attr_get_raw_value() failed to take
the signedness of 16 and 8 bit values into account, returning e.g.
65436 instead of -100 for the z-axis reading of an accelerometer.
This commit adds a new is_signed parameter to the function and makes all
callers pass the appropriate value for this.
While at it, this commit also fixes up some neighboring lines where
statements were needlessly split over 2 lines to improve readability.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 385a488677 upstream.
Previously, when a HID client such as the Steam Client was running, this
driver disabled its input device to avoid doubling the input events.
While it worked mostly fine, some games got confused by the idle gamepad,
and switched to two player mode, or asked the user to choose which gamepad
to use. Other games just crashed, probably a bug in Unity [1].
With this commit, when a HID client starts, the input device is removed;
when the HID client ends the input device is recreated.
[1]: https://github.com/ValveSoftware/steam-for-linux/issues/5645
Signed-off-by: Rodrigo Rivas Costa <rodrigorivascosta@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Cc: Pierre-Loup Griffais <pgriffais@valvesoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit fb862c3b19 upstream.
The PixArt OEM mice are known for disconnecting every minute in
runlevel 1 or 3 if they are not always polled. So add quirk
ALWAYS_POLL for two Primax mice as well.
0x4e22 is the Dell MS111-P and 0x4d0f is the unbranded HP Portia
mouse HP 697738-001. Both were built until approx. 2014.
Those were the standard mice from those vendors and are still
around - even as new old stock.
Reference: https://github.com/sriemer/fix-linux-mouse/issues/11
Signed-off-by: Sebastian Parschauer <sparschauer@suse.de>
CC: stable@vger.kernel.org
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 8c01db7619 upstream.
When a UHID_CREATE command is written to the uhid char device, a
copy_from_user() is done from a user pointer embedded in the command.
When the address limit is KERNEL_DS, e.g. as is the case during
sys_sendfile(), this can read from kernel memory. Alternatively,
information can be leaked from a setuid binary that is tricked to write
to the file descriptor. Therefore, forbid UHID_CREATE in these cases.
No other commands in uhid_char_write() are affected by this bug and
UHID_CREATE is marked as "obsolete", so apply the restriction to
UHID_CREATE only rather than to uhid_char_write() entirely.
Thanks to Dmitry Vyukov for adding uhid definitions to syzkaller and to
Jann Horn for commit 9da3f2b740 ("x86/fault: BUG() when uaccess
helpers fault on kernel addresses"), allowing this bug to be found.
Reported-by: syzbot+72473edc9bf4eb1c6556@syzkaller.appspotmail.com
Fixes: d365c6cfd3 ("HID: uhid: add UHID_CREATE and UHID_DESTROY events")
Cc: <stable@vger.kernel.org> # v3.6+
Cc: Jann Horn <jannh@google.com>
Cc: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Jann Horn <jannh@google.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 7dd8db6894 ]
If userspace only reads the trackstick node, and no one is listening to
the touchpad nor the hidraw node then, the device is not powered on.
Add open/close callbacks to allow users to disable the touchpad in Gnome
while keeping the trackstick active.
Link: https://bugzilla.redhat.com/show_bug.cgi?id=1559632
Link: https://gitlab.gnome.org/GNOME/mutter/issues/128
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 6298944d8f ]
This reverts commit 67ddbb3e65.
67ddbb3e65 ("HID: add NOGET quirk for Eaton Ellipse MAX UPS") was reported
by Laurent Bigonville. It turns out that a later model Laurent got
doesn't need the quirk after all.
My take is that Eaton upgraded their firmwares, so we don't need it
anymore.
The old model was from 2012, so better make sure the new line works
properly by removing the quirk. This allows upower to actually fetch
the current data.
Reported-by: Laurent Bigonville <bigon@bigon.be>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 00b790ea54 ]
Raydium touchpanel (2386:4B33) sometimes does not work in desktop session
although it works in display manager.
During user logging, the display manager exits, close the HID device,
then the device gets runtime suspended and powered off. The desktop
session begins shortly after, opens the HID device, then the device gets
runtime resumed and powered on.
If the trasition from display manager to desktop sesesion is fast, the
touchpanel cannot switch from powered off to powered on in short
timeframe. So add a small delay to workaround the issue.
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
commit f11274396a upstream.
uref->usage_index can be indirectly controlled by userspace, hence leading
to a potential exploitation of the Spectre variant 1 vulnerability.
This field is used as an array index by the hiddev_ioctl_usage() function,
when 'cmd' is either HIDIOCGCOLLECTIONINDEX, HIDIOCGUSAGES or
HIDIOCSUSAGES.
For cmd == HIDIOCGCOLLECTIONINDEX case, uref->usage_index is compared to
field->maxusage and then used as an index to dereference field->usage
array. The same thing happens to the cmd == HIDIOC{G,S}USAGES cases, where
uref->usage_index is checked against an array maximum value and then it is
used as an index in an array.
This is a summary of the HIDIOCGCOLLECTIONINDEX case, which matches the
traditional Spectre V1 first load:
copy_from_user(uref, user_arg, sizeof(*uref))
if (uref->usage_index >= field->maxusage)
goto inval;
i = field->usage[uref->usage_index].collection_index;
return i;
This patch fixes this by sanitizing field uref->usage_index before using it
to index field->usage (HIDIOCGCOLLECTIONINDEX) or field->value in
HIDIOC{G,S}USAGES arrays, thus, avoiding speculation in the first load.
Cc: <stable@vger.kernel.org>
Signed-off-by: Breno Leitao <leitao@debian.org>
v2: Contemplate cmd == HIDIOC{G,S}USAGES case
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 11db8173db upstream.
The DTK-2451 and DTH-2452 have a buggy HID descriptor which incorrectly
contains a Cintiq-like report, complete with pen tilt, rotation, twist, serial
number, etc. The hardware doesn't actually support this data but our driver
duitifully sets up the device as though it does. To ensure userspace has a
correct view of devices without updated firmware, we clean up this incorrect
data in wacom_setup_device_quirks.
We're also careful to clear the WACOM_QUIRK_TOOLSERIAL flag since its presence
causes the driver to wait for serial number information (via
wacom_wac_pen_serial_enforce) that never comes, resulting in
the pen being non-responsive.
Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com>
Fixes: 8341720642 ("HID: wacom: Queue events with missing type/serial data for later processing")
Cc: stable@vger.kernel.org # v4.16+
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Added PCI ID for Ice Lake mobile platform.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Commit 52cf93e63e ("HID: i2c-hid: Don't reset device upon system resume")
removes the need for the RESEND_REPORT_DESCR quirk for Raydium devices, but
kept it for the SIS device id 10FB touchscreens, as the author of that
commit could not determine if the quirk is still necessary there.
I've tested suspend/resume on a Toshiba Click Mini L9W-B which is the
device for which this quirk was added in the first place and with the
"Don't reset device upon system resume" fix the quirk is no longer
necessary, so this commit removes it.
Note even better I also had some other devices with SIS touchscreens which
suspend/resume issues, where the RESEND_REPORT_DESCR quirk did not help.
I've also tested these devices with the "Don't reset device upon system
resume" fix and I'm happy to report that that fix also fixes touchscreen
resume on the following devices:
Asus T100HA
Asus T200TA
Peaq C1010
Cc: Kai-Heng Feng <kai.heng.feng@canonical.com>
Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This hantick HTIX5288 touchpad can quickly fall in a wrong state if
there are too many open/close operations. This will either make it stop
reporting any input, or will shift all the input reads by a few bytes,
making it impossible to decode.
Here, we never release the probed touchpad runtime pm while the driver
is loaded, which should disable all runtime pm suspend/resumes.
This fast repetition of sleep/wakeup is also more likely to happen when
using runtime PM, which is why the quirk is done there, and not for all
power downs, which would include suspend or module removal.
Signed-off-by: Anisse Astier <anisse@astier.eu>
Cc: stable@vger.kernel.org
Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Tested-by: Philip Müller <philm@manjaro.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Raydium touchscreen triggers interrupt storm after system-wide suspend:
[ 179.085033] i2c_hid i2c-CUST0000:00: i2c_hid_get_input: incomplete report (58/65535)
According to Raydium, Windows driver does not reset the device after system
resume.
The HID over I2C spec does specify a reset should be used at intialization, but
it doesn't specify if reset is required for system suspend.
Tested this patch on other i2c-hid touchpanels I have and those touchpanels do
work after S3 without doing reset. If any regression happens to other
touchpanel vendors, we can use quirk for Raydium devices.
There's still one device uses I2C_HID_QUIRK_RESEND_REPORT_DESCR so keep it
there.
Cc: Aaron Ma <aaron.ma@canonical.com>
Cc: AceLan Kao <acelan.kao@canonical.com>
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Commit b0f847e16c ("HID: hid-sensor-hub: Force logical minimum to 1 for
power and report state") not only replaced the descriptor fixup done for
devices with the HID_SENSOR_HUB_ENUM_QUIRK with a generic fix, but also
accidentally removed the unrelated descriptor fixup for the Lenovo ThinkPad
Helix 2 sensor hub. This commit restores this fixup.
Restoring this fixup not only fixes the Lenovo ThinkPad Helix 2's sensors,
but also the Lenovo ThinkPad 8's sensors.
Fixes: b0f847e16c ("HID: hid-sensor-hub: Force logical minimum ...")
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: Fernando D S Lima <fernandodsl@gmail.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
There is a NULL pointer dereference in case memory resources
for *parse* are not successfully allocated.
Fix this by adding a new goto label and make the execution
path jump to it in case vzalloc() fails.
Addresses-Coverity-ID: 1473081 ("Dereference after null check")
Fixes: b2dd9f2e5a ("HID: core: fix memory leak on probe")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
When implementing commit 7f81c8db54 ("HID: multitouch: simplify
the settings of the various features"), I wrongly removed a test
that made sure we never try to set the second InputMode feature
to something else than 0.
This broke badly some recent Elan panels that now forget to send the
click button in some area of the touchpad.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=200899
Fixes: 7f81c8db54 ("HID: multitouch: simplify the settings of the various features")
Cc: stable@vger.kernel.org # v4.18+
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The dynamically allocted collection stack does not get freed in
all situations. Make sure to also free the collection stack when
using the parser in hid_open_report().
Fixes: 08a8a7cf14 ("HID: core: do not upper bound the collection stack")
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Make sure to free the custom input node name on disconnect.
Cc: stable@vger.kernel.org # v4.18+
Fixes: c554bb0455 ("HID: input: append a suffix matching the application")
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
USB device
Vendor 05ac (Apple)
Device 026c (Magic Keyboard with Numeric Keypad)
Bluetooth devices
Vendor 004c (Apple)
Device 0267 (Magic Keyboard)
Device 026c (Magic Keyboard with Numeric Keypad)
Support already exists for the Magic Keyboard over USB connection.
Add support for the Magic Keyboard over Bluetooth connection, and for
the Magic Keyboard with Numeric Keypad over Bluetooth and USB
connection.
Signed-off-by: Sean O'Brien <seobrien@chromium.org>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Pull HID updates from Jiri Kosina:
- touch_max detection improvements and quirk handling fixes in wacom
driver from Jason Gerecke and Ping Cheng
- Palm rejection from Dmitry Torokhov and _dial support from Benjamin
Tissoires for hid-multitouch driver
- Low voltage support for i2c-hid driver from Stephen Boyd
- Guitar-Hero support from Nicolas Adenis-Lamarre
- other assorted small fixes and device ID additions
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: (40 commits)
HID: intel_ish-hid: tx_buf memory leak on probe/remove
HID: intel-ish-hid: Prevent loading of driver on Mehlow
HID: cougar: Add support for the Cougar 500k Gaming Keyboard
HID: cougar: make compare_device_paths reusable
HID: intel-ish-hid: remove redundant variable num_frags
HID: multitouch: handle palm for touchscreens
HID: multitouch: touchscreens also use confidence reports
HID: multitouch: report MT_TOOL_PALM for non-confident touches
HID: microsoft: support the Surface Dial
HID: core: do not upper bound the collection stack
HID: input: enable Totem on the Dell Canvas 27
HID: multitouch: remove one copy of values
HID: multitouch: ditch mt_report_id
HID: multitouch: store a per application quirks value
HID: multitouch: Store per collection multitouch data
HID: multitouch: make sure the static list of class is not changed
input: add MT_TOOL_DIAL
HID: elan: Add support for touchpad on the Toshiba Click Mini L9W
HID: elan: Add USB-id for HP x2 10-n000nd touchpad
HID: elan: Add a flag for selecting if the touchpad has a LED
...
ish_dev_init() allocates 512*176 bytes memory for tx_buf and stores it at
&dev->wr_free_list_head.link list on ish_probe().
But there is no deallocation of this memory in ish_remove() and in
ish_probe() error path.
So current intel-ish-ipc provides 88 KB memory leak for each
probe/release.
The patch replaces kzalloc allocation by devm_kzalloc and removes
ishtp_device *dev deallocation by kfree.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Anton Vasilyev <vasilyev@ispras.ru>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
On Mehlow Xeon-E workstation, ISH PCI device is enabled but without ISH
firmware. Here the ISH device PCI device id was reused for some non Linux
storage drivers. So this was not done for enabling ISH. But this has a
undesirable side effect for Linux.
Here the ISH driver will be loaded via PCI enumeration and will try to do
reset sequence. But reset sequence will wait till timeout as there is no
real ISH firmware is present to take action. This delay will add to boot
time of Linux (This platform will still continue to boot after this
timeout).
To avoid this boot delay we need to prevent loading of ISH drivers on
this platform. So we need to have hack to avoid treating this device as
ISH on this platform. To identify this workstation, we need some runtime
method. Luckily there are special PCI id on this workstation to
distinguish from the client version of this platform. On client version,
the ISH is supported using same PCI device id. So this change look for
the presence of PCI device IDs A309 and A30A and exit.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Cougar 500k Gaming Keyboard have some special function keys that
make the keyboard stop responding once pressed. Implement the custom
vendor interface that deals with the extended keypresses to fix.
The bug can be reproduced by plugging in the keyboard, then pressing the
rightmost part of the spacebar.
Signed-off-by: Daniel M. Lambea <dmlambea@gmail.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The function compare_device_paths from wacom_sys.c is generic
and useful for other drivers. Move the function to hid-core and
rename it as hid_compare_device_paths.
Signed-off-by: Daniel M. Lambea <dmlambea@gmail.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Variable num_frags is being assigned but is never used hence it is
redundant and can be removed.
Cleans up clang warning:
warning: variable 'num_frags' set but not used [-Wunused-but-set-variable]
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Usually, there is no palm rejection for touchscreens. You don't rest
your palm on the touchscreen while interacting with it.
However, some wacom devices do so because you can rest your palm while
interacting with the stylus.
Unfortunately, the spec for touchscreens[1] is less precise than the one
for touchpads[2]. This leads to a situation where it's 'legitimate'
for a touchscreen to provide both tipswitch off and confidence off in the
same report.
Work around that by keeping the slot active for one frame where we report
MT_TOOL_PALM, and then synthesizing the release event in a separate frame.
frame
Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
[rebased and new commit message]
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
According to Microsoft specification [1] for Precision Touchpads (and
Touchscreens) the devices use "confidence" reports to signal accidental
touches, or contacts that are "too large to be a finger". Instead of
simply marking contact inactive in this case (which causes issues if
contact was originally proper and we lost confidence in it later, as
this results in accidental clicks, drags, etc), let's report such
contacts as MT_TOOL_PALM and let userspace decide what to do.
[1] https://docs.microsoft.com/en-us/windows-hardware/design/component-guidelines/touchpad-windows-precision-touchpad-collection
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
[splitted and rebased]
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The tool works nicely with hid-generic, but it ends up creating 9
different input nodes with most of them only having ABS_MISC set.
Filter the axis out, which reduces the amount of devices to 2. One is
the proper System Multi-axis collection, the other exported device
seems to provide SLEEP and POWER Key, not sure how one can trigger
those events though.
Filtering the ABS_X and ABS_Y axes also prevents udev to detect this as
a touchscreen.
Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
