486b908 (HID: wacom: do not send pen events before touch is up/forced out)
introduces a kernel oops when plugging a tablet without touch.
wacom->shared is null for these devices so this leads to a null pointer
exception.
Change the condition to make it clear that what we need is wacom->shared
not NULL.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The linux kernel has supported the TiVo Slide remote control for some time, but
does not recognize the USB ID of the newer Slide Pro. This patch adds the
missing data structures so the newer remote will be recognized by the driver,
thereby allowing the TiVo, LiveTV, and Thumbs Up/Down buttons to be
mapped with a hwdb file.
Signed-off-by: Forest Wilkinson <web11.forest@tibit.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
touch_down is a flag to indicate if there are touches on tablet
or not. Since one set of touch events may be posted over more
than one data packet/touch frame, and pen may come in proximity
while touch events are partially sent, counting all touch events
for the set reflects the actual status of touch_down.
Signed-off-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
If pen comes in proximity while touch is down, we force touch up
before sending pen events. Otherwise, there can be unfinished
touch events compete with pen events. This idea has been fully
implemented for Tablet PCs. But other tablets that support both
pen and touch are not fully considered.
Signed-off-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Microsoft Natural Wireless Ergonomic Keyboard 7000 has special My
Favorites 1..5 keys which are handled through a vendor-defined usage
page (0xff05).
Apply MS_ERGONOMY quirks handling to USB PID 0x071d (Microsoft Microsoft
2.4GHz Transceiver V1.0) so that the My Favorites 1..5 keys are reported
as KEY_F14..18 events.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=52841
Signed-off-by: Jakub Sitnicki <jsitnicki@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
d1c7e29e8d (HID: i2c-hid: prevent buffer overflow in early IRQ)
changed hid_get_input() to read ihid->bufsize bytes, which can be
more than wMaxInputLength. This is the case with the Dell XPS 13
9343, and it is causing events to be missed. In some cases the
missed events are releases, which can cause the cursor to jump or
freeze, among other problems. Limit the number of bytes read to
min(wMaxInputLength, ihid->bufsize) to prevent such problems.
Fixes: d1c7e29e8d "HID: i2c-hid: prevent buffer overflow in early IRQ"
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Per-controller spinlock needs to be properly initialized during device probe.
[jkosina@suse.cz: massage changelog]
[jkosina@suse.cz: drop hunk that has already been applied by previous
patch]
Signed-off-by: Frank Praznik <frank.praznik@oh.rr.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
sony_dev_list_lock spinlock (which was introduced in d2d782fcce ("HID: sony:
Prevent duplicate controller connections") is not being initialized properly.
Fix that.
Reported-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
ida_destroy() must be called _after_ all the devices have been
unregistered; otherwise, when calling "rmmod hid_sony" with devices
still plugged in, the following warning would show up because of calls
to ida_simple_remove() on a destroyed ID allocator:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5509 at lib/idr.c:1052 ida_simple_remove+0x26/0x50()
ida_remove called for id=0 which is not allocated.
Modules linked in: ...
CPU: 0 PID: 5509 Comm: rmmod Not tainted 3.19.0-rc6-ao2 #35
Hardware name: System manufacturer System Product Name/M2N-MX SE, BIOS 0501 03/20/2008
0000000000000000 ffffffff8176320d ffffffff815b3a88 ffff880036f7fdd8
ffffffff8106ce01 0000000000000000 ffffffffa07658e0 0000000000000246
ffff88005077d8b8 ffff88005077d8d0 ffffffff8106ce7a ffffffff81763260
Call Trace:
[<ffffffff815b3a88>] ? dump_stack+0x40/0x50
[<ffffffff8106ce01>] ? warn_slowpath_common+0x81/0xb0
[<ffffffff8106ce7a>] ? warn_slowpath_fmt+0x4a/0x50
[<ffffffff812ccb86>] ? ida_simple_remove+0x26/0x50
[<ffffffffa0762dc8>] ? sony_remove+0x58/0xe0 [hid_sony]
[<ffffffffa00fff15>] ? hid_device_remove+0x65/0xd0 [hid]
[<ffffffff8140425e>] ? __device_release_driver+0x7e/0x100
[<ffffffff81404c70>] ? driver_detach+0xa0/0xb0
[<ffffffff81403ee5>] ? bus_remove_driver+0x55/0xe0
[<ffffffffa01000ff>] ? hid_unregister_driver+0x2f/0xa0 [hid]
[<ffffffff810e45bf>] ? SyS_delete_module+0x1bf/0x270
[<ffffffff81014089>] ? do_notify_resume+0x69/0xa0
[<ffffffff815b952d>] ? system_call_fastpath+0x16/0x1b
---[ end trace bc794b3d22c30ede ]---
Signed-off-by: Antonio Ospite <ao2@ao2.it>
Acked-by: Frank Praznik <frank.praznik@oh.rr.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Commit 0ccf091d1f ("HID: sensor-hub:
make dyn_callback_lock IRQ-safe) was supposed to change locks
in sensor_hub_get_callback(), but missed.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The Microsoft HID over I2C specification says two things regarding the
interrupt:
1) The interrupt should be level sensitive
2) The device keeps the interrupt asserted as long as it has more reports
available.
We've seen that at least some Atmel and N-Trig panels keep the line low as
long as they have something to send. The current version of the driver only
detects the first edge but then fails to read rest of the reports (as the
line is still asserted).
Make the driver follow the specification and configure the HID interrupt to
be level sensitive.
The Windows HID over I2C driver also seems to do the same.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
27QHD has the same x_min/y_min (WACOM_CINTIQ_OFFSET) as other Cintiqs.
ABS_MISC event is required for PAD packet to work properly with
xf86-input-wacom.
Signed-off-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
These devices have accelerometers. To report accelerometer coordinates, a new
property, INPUT_PROP_ACCELEROMETER, is added.
Signed-off-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
After PAD moved to its own interface, there were duplicated statements in
wacom_setup_pentouch_input_capabilities. Merge them together to reduce future
maintenance effort.
Signed-off-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
stylus_in_proximity is used to make sure no touch event is sent while pen is in
proximity. touch_down is used to make sure a touch up event is sent when pen
comes into proximity while touch is down.
Two touch routines didn't store touch_down. One touch routine forgot to check
stylus_in_proximity before sending touch events. This patch fixes those issues.
Signed-off-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The FF2 driver (usbhid/hid-pidff.c) sends commands to the stick during ff_init.
However, this is called inside a block where driver_input_lock is locked, so
the results of these initial commands are discarded. This behavior is the
"killer", without this nothing else works.
ff_init issues commands using "hid_hw_request". This eventually goes to
hid_input_report, which returns -EBUSY because driver_input_lock is locked. The
change is to delay the ff_init call in hid-core.c until after this lock has
been released.
Calling hid_device_io_start() releases the lock so the device can be
configured. We also need to call hid_device_io_stop() on exit for the lock to
remain locked while ending the init of the drivers.
[ benjamin.tissoires@redhat.com: imrpoved the changelog a lot ]
Signed-off-by: Jim Keir <jimkeir@oracledbadirect.com>
Reviewed-by: Benjamin.tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The return type of wait_for_completion_timeout is unsigned long not
int. This patch fixes up the declarations only.
Patch was compile tested only for x86_64_defconfig + CONFIG_X86_VSMP=y
CONFIG_HYPERV=m, CONFIG_HID_HYPERV_MOUSE=m
Signed-off-by: Nicholas Mc Guire <der.herr@hofr.at>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
It appears that the Cintiq Companion Hybrid does not send an ABS_MISC event to
userspace when any of its ExpressKeys are pressed. This is not strictly
necessary now that the pad exists on its own device, but should be fixed for
consistency's sake.
Traditionally both the stylus and pad shared the same device node, and
xf86-input-wacom would use ABS_MISC for disambiguation. Not sending this causes
the Hybrid to behave incorrectly with xf86-input-wacom beginning with its
8f44f3 commit.
Signed-off-by: Jason Gerecke <killertofu@gmail.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Use <driver>-$(CONFIG_FOO) syntax to build multipart objects with
optional parts, since all the config options are bool. Also, delete the
obvious comments in the usbhid Makefile.
Signed-off-by: Michal Marek <mmarek@suse.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The Microchip Pick16F1454 is exported as a HID device and is used by for
example the Yepkit YKUSH three-port switchable USB hub. However, it is not an
actual HID-device. On the Yepkit, it is used to power up/down the ports on the
hub. The HID driver should ignore this device.
Signed-off-by: Kristian Evensen <kristian.evensen@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Use the DEVICE_ATTR_RW macro to reduce boiler plate and move the
attribute declaration to get rid of function signatures.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
There is no reason to set the range attribute executable to the user and
group, and writable to the group. Fix the permission to 0644.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Some Cintiq and Intuos tablets report In Range event. This event is sent before
valid data is reported when tool enters proximity; or before out of proximity
event is reported when tool exits.
While entering proximity, In Range means a pen is detected. This information
can be used for palm/touch rejection on both pen and touch enabled devices.
While exiting, it means the tool has reached its maximum detectable distance.
Signed-off-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Users may use unsupported tools on Cintiq or Intuos. When invalid tools or data
are detected, they should be ignored. That is, no event from those tools should
be reported.
Consolidating that code in wacom_intuos_inout simplifies the logic and make it
easier for future code change.
Signed-off-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Have hid-rmi handle all of the Razer Blade HID devices that are part of the
composite USB device. This will allow hid-rmi to operate the touchpad in rmi
mode while passing events from the other devices to hid-input.
Signed-off-by: Andrew Duggan <aduggan@synaptics.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The external buttons on HID touchpads are connected as pass through devices and
button events are not reported in the rmi registers. As a result on these
devices we need to allow the HID generic desktop button events to be processed
by hid-input. Unfortunately, there is no way to query the touchpad to determine
that it has pass through buttons so the RMI_DEVICE_HAS_PHYS_BUTTONS should be
set manually when adding the device to rmi_id[].
Signed-off-by: Andrew Duggan <aduggan@synaptics.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Now that hid_report_len is in hid.h we can use this function instead of
duplicating the code which computes it.
Signed-off-by: Andrew Duggan <aduggan@synaptics.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This is a static checker fix. We write some binary settings to the
sysfs file. One of the settings is the "->startup_profile". There
isn't any checking to make sure it fits into the
pyra->profile_settings[] array in the profile_activated() function.
I added a check to pyra_sysfs_write_settings() in both places because
I wasn't positive that the other callers were correct.
Cc: <stable@vger.kernel.org>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
If a disconnect occurs while getting the actual name of the device
(which can take several HID transactions), the name of the device will
be the hid name, provided by the Unifying Receiver.
This means that in some cases, the user space will see a different
name that what it usually sees when there is no disconnect.
We should store the name of the device in the struct hidpp. That way,
if a disconnect occurs while we are accessing the name,
hidpp_connect_event() can fail, and the input node is not created.
The input node will be created only if we have a connection which
lasts long enough to retrieve all the requested information:
name, protocol, and specific configuration.
Reviewed-by: Peter Wu <peter@lekensteyn.nl>
Tested-by: Peter Wu <peter@lekensteyn.nl>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Based on code for the US Surface Type Cover 3
from commit be3b16341d
("HID: add support for MS Surface Pro 3 Type Cover"):
Signed-off-by: Alan Wu <alan.c.wu@gmail.com>
Tested-by: Karlis Dreizis <karlisdreizis@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The ignore check that got added in 6ce901eb61 ("HID: input: fix confusion
on conflicting mappings") needs to properly check for VARIABLE reports
as well (ARRAY reports should be ignored), otherwise legitimate keyboards
might break.
Cc: <stable@vger.kernel.org>
Fixes: 6ce901eb61 ("HID: input: fix confusion on conflicting mappings")
Reported-by: Fredrik Hallenberg <megahallon@gmail.com>
Reported-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
On an PC-101/103/104 keyboard (American layout) the 'Enter' key and its
neighbours look like this:
+---+ +---+ +-------+
| 1 | | 2 | | 5 |
+---+ +---+ +-------+
+---+ +-----------+
| 3 | | 4 |
+---+ +-----------+
On a PC-102/105 keyboard (European layout) it looks like this:
+---+ +---+ +-------+
| 1 | | 2 | | |
+---+ +---+ +-+ 4 |
+---+ +---+ | |
| 3 | | 5 | | |
+---+ +---+ +-----+
(Note that the number of keys is the same, but key '5' is moved down and
the shape of key '4' is changed. Keys '1' to '3' are exactly the same.)
The keys 1-4 report the same scan-code in HID in both layouts, even though
the keysym they produce is usually different depending on the XKB-keymap
used by user-space.
However, key '5' (US 'backslash'/'pipe') reports 0x31 for the upper layout
and 0x32 for the lower layout, as defined by the HID spec. This is highly
confusing as the linux-input API uses a single keycode for both.
So far, this was never a problem as there never has been a keyboard with
both of those keys present at the same time. It would have to look
something like this:
+---+ +---+ +-------+
| 1 | | 2 | | x31 |
+---+ +---+ +-------+
+---+ +---+ +-----+
| 3 | |x32| | 4 |
+---+ +---+ +-----+
HID can represent such a keyboard, but the linux-input API cannot.
Furthermore, any user-space mapping would be confused by this and,
luckily, no-one ever produced such hardware.
Now, the HID input layer fixed this mess by mapping both 0x31 and 0x32 to
the same keycode (KEY_BACKSLASH==0x2b). As only one of both physical keys
is present on a hardware, this works just fine.
Lets introduce hardware-vendors into this:
------------------------------------------
Unfortunately, it seems way to expensive to produce a different device for
American and European layouts. Therefore, hardware-vendors put both keys,
(0x31 and 0x32) on the same keyboard, but only one of them is hooked up
to the physical button, the other one is 'dead'.
This means, they can use the same hardware, with a different button-layout
and automatically produce the correct HID events for American *and*
European layouts. This is unproblematic for normal keyboards, as the
'dead' key will never report any KEY-DOWN events. But RollOver keyboards
send the whole matrix on each key-event, allowing n-key roll-over mode.
This means, we get a 0x31 and 0x32 event on each key-press. One of them
will always be 0, the other reports the real state. As we map both to the
same keycode, we will get spurious key-events, even though the real
key-state never changed.
The easiest way would be to blacklist 'dead' keys and never handle those.
We could simply read the 'country' tag of USB devices and blacklist either
key according to the layout. But... hardware vendors... want the same
device for all countries and thus many of them set 'country' to 0 for all
devices. Meh..
So we have to deal with this properly. As we cannot know which of the keys
is 'dead', we either need a heuristic and track those keys, or we simply
make use of our value-tracking for HID fields. We simply ignore HID events
for absolute data if the data didn't change. As HID tracks events on the
HID level, we haven't done the keycode translation, yet. Therefore, the
'dead' key is tracked independently of the real key, therefore, any events
on it will be ignored.
This patch simply discards any HID events for absolute data if it didn't
change compared to the last report. We need to ignore relative and
buffered-byte reports for obvious reasons. But those cannot be affected by
this bug, so we're fine.
Preferably, we'd do this filtering on the HID-core level. But this might
break a lot of custom drivers, if they do not follow the HID specs.
Therefore, we do this late in hid-input just before we inject it into the
input layer (which does the exact same filtering, but on the keycode
level).
If this turns out to break some devices, we might have to limit filtering
to EV_KEY events. But lets try to do the Right Thing first, and properly
filter any absolute data that didn't change.
This patch is tagged for 'stable' as it fixes a lot of n-key RollOver
hardware. We might wanna wait with backporting for a while, before we know
it doesn't break anything else, though.
Cc: <stable@vger.kernel.org>
Reported-by: Adam Goode <adam@spicenitz.org>
Reported-by: Fredrik Hallenberg <megahallon@gmail.com>
Tested-by: Fredrik Hallenberg <megahallon@gmail.com>
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Bamboo Pads are using the generic processing but their report descriptors
differ from the ISDv* line. The pen fields are marked with the .physical
as Digitizer_Pen, which makes also sense.
Add this field to the checks and enable for free Bamboo Pads.
Reported-by: Josep Sanchez Ferreres <josep.sanchez.ferreres@est.fib.upc.edu>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
We introduced nice macros in wacom_wac.c to check whether a field is
a pen or a touch one.
wacom_usage_mapping() still uses it's own tests, which are not in sync with
the wacom_wac tests (.application is not checked).
That means that some legitimate fields might be filtered out from the
usage mapping, and thus will not be used properly while receiving the
events.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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>
Commit fc38a8a66e ("HID: add BETOP game controller force feedback support")
is missing the actual addition of drivers/hid/hid-betopff.c due to my
mistake (I forgot to add the file after fixing conflicts).
Fixes: fc38a8a66e ("HID: add BETOP game controller force feedback support")
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Adds force feedback support for BETOP USB game controllers.
These devices are mass produced in China.
Signed-off-by: Huang Bo <huangbobupt@163.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Allowing hid-rmi to bind to non rmi devices allows us to support composite USB
devices which contain several HID devices one of which is a HID touchpad.
Since all of the devices have the same VID and PID we can add the device
to the hid_have_special_driver list and have hid-rmi handle all of the devices.
Then hid-rmi's probe can look for the rmi specific HID report IDs and decide if
it should handle the device as a rmi device or simply report that the events
needs additional processing.
Signed-off-by: Andrew Duggan <aduggan@synaptics.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Current names are reported as "K750", "M705", and it can be misleading
for the users when they look at their input device list.
Prefixing the names with "Logitech " makes things better.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Peter Wu <peter@lekensteyn.nl>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Add a return to avoid a fall-through. Introduced in commit
57ac86cf52 ("HID: logitech-hidpp: add
support of the first Logitech Wireless Touchpad").
Signed-off-by: Peter Wu <peter@lekensteyn.nl>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Devices speaking HID++ 2.0 report a different error code (0xff). Detect
these errors too to avoid 5 second delays when the device reports an
error. Caught by... well, a bug in the QEMU emulation of this receiver.
Renamed fap to rap for HID++ 1.0 errors because it is more logical,
it has no functional difference.
Signed-off-by: Peter Wu <peter@lekensteyn.nl>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Allows for HID_BATTERY_STRENGTH config be enabled without the need for HID
module to be built-in, prior to this HID and POWER_SUPPLY had to be equal, and
now we only select POWER_SUPPLY and depend on the HID module.
Signed-off-by: Daniel Nicoletti <dantti12@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Current names are reported as "K750", "M705", and it can be misleading
for the users when they look at their input device list.
Prefixing the names with "Logitech " makes things better.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Peter Wu <peter@lekensteyn.nl>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
When a hid driver that uses i2c-hid as transport is unloaded, the hid core
will call i2c_hid_stop() which releases all the buffers associated with the
device. This includes also the command buffer.
Now, when the i2c-hid driver itself is unloaded it tries to power down the
device by sending it PWR_SLEEP command. Since the command buffer is already
released we get following crash:
[ 79.691459] BUG: unable to handle kernel NULL pointer dereference at (null)
[ 79.691532] IP: [<ffffffffa05bc049>] __i2c_hid_command+0x49/0x310 [i2c_hid]
...
[ 79.693467] Call Trace:
[ 79.693494] [<ffffffff810424e1>] ? __unmask_ioapic+0x21/0x30
[ 79.693537] [<ffffffff81042855>] ? unmask_ioapic+0x25/0x40
[ 79.693581] [<ffffffffa05bc35b>] ? i2c_hid_set_power+0x4b/0xa0 [i2c_hid]
[ 79.693632] [<ffffffffa05bc3cf>] ? i2c_hid_runtime_resume+0x1f/0x30 [i2c_hid]
[ 79.693689] [<ffffffff814c08fb>] ? __rpm_callback+0x2b/0x70
[ 79.693733] [<ffffffff814c0961>] ? rpm_callback+0x21/0x90
[ 79.693776] [<ffffffff814c0dec>] ? rpm_resume+0x41c/0x600
[ 79.693820] [<ffffffff814c1e1c>] ? __pm_runtime_resume+0x4c/0x80
[ 79.693868] [<ffffffff814b8588>] ? __device_release_driver+0x28/0x100
[ 79.693917] [<ffffffff814b8d90>] ? driver_detach+0xa0/0xb0
[ 79.693959] [<ffffffff814b82cc>] ? bus_remove_driver+0x4c/0xb0
[ 79.694006] [<ffffffff810d1cfd>] ? SyS_delete_module+0x11d/0x1d0
[ 79.694054] [<ffffffff8165f107>] ? int_signal+0x12/0x17
[ 79.694095] [<ffffffff8165ee69>] ? system_call_fastpath+0x12/0x17
Fix this so that we only free buffers when the i2c-hid driver itself is
removed.
Fixes: 34f439e4af ("HID: i2c-hid: add runtime PM support")
Reported-by: Gabriele Mazzotta <gabriele.mzt@gmail.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
On composite HID devices there may be multiple HID devices on separate
interfaces, but hid-rmi should only bind to the touchpad. The previous version
simply checked that the interface protocol was set to mouse. Unfortuately, it
is not always the case that the touchpad has the mouse interface protocol set.
This patch takes a different approach and scans the report descriptor looking
for the Generic Desktop Pointer usage and the Vendor Specific Top Level
Collection needed by the hid-rmi driver to interface with the device.
Signed-off-by: Andrew Duggan <aduggan@synaptics.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Benjamin Tissoires