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syzbot has found a use-after-free bug [1] in the powermate driver. This
happens when the device is disconnected, which leads to a memory free from
the powermate_device struct. When an asynchronous control message
completes after the kfree and its callback is invoked, the lock does not
exist anymore and hence the bug.
Use usb_kill_urb() on pm->config to cancel any in-progress requests upon
device disconnection.
[1] https://syzkaller.appspot.com/bug?extid=0434ac83f907a1dbdd1e
Signed-off-by: Javier Carrasco <[email protected]>
Reported-by: [email protected]
Link: https://lore.kernel.org/r/20230916-topic-powermate_use_after_free-v3-1-64412b81a7a2@gmail.com
Signed-off-by: Dmitry Torokhov <[email protected]>
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Add VID and PID to the xpad_device table to allow driver to use the PXN
V900 steering wheel, which is XTYPE_XBOX360 compatible in xinput mode.
Signed-off-by: Matthias Berndt <[email protected]>
Link: https://lore.kernel.org/r/4932699.31r3eYUQgx@fedora
Signed-off-by: Dmitry Torokhov <[email protected]>
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Touch controllers need some time after receiving reset command for the
firmware to finish re-initializing and be ready to respond to commands
from the host. The driver already had handling for the post-reset delay
for I2C and SPI transports, this change adds the handling to
SMBus-connected devices.
SMBus devices are peculiar because they implement legacy PS/2
compatibility mode, so reset is actually issued by psmouse driver on the
associated serio port, after which the control is passed to the RMI4
driver with SMBus companion device.
Note that originally the delay was added to psmouse driver in
92e24e0e57f7 ("Input: psmouse - add delay when deactivating for SMBus
mode"), but that resulted in an unwanted delay in "fast" reconnect
handler for the serio port, so it was decided to revert the patch and
have the delay being handled in the RMI4 driver, similar to the other
transports.
Tested-by: Jeffery Miller <[email protected]>
Link: https://lore.kernel.org/r/ZR1yUFJ8a9Zt606N@penguin
Signed-off-by: Dmitry Torokhov <[email protected]>
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When the SMBus connection is attempted psmouse_smbus_init() sets
the fast_reconnect pointer to psmouse_smbus_reconnecti(). If SMBus
initialization fails, elantech_setup_ps2() and synaptics_init_ps2() will
fallback to PS/2 mode, replacing the psmouse private data. This can cause
issues on resume, since psmouse_smbus_reconnect() expects to find an
instance of struct psmouse_smbus_dev in psmouse->private.
The issue was uncovered when in 92e24e0e57f7 ("Input: psmouse - add
delay when deactivating for SMBus mode") psmouse_smbus_reconnect()
started attempting to use more of the data structure. The commit was
since reverted, not because it was at fault, but because there was found
a better way of doing what it was attempting to do.
Fix the problem by resetting the fast_reconnect pointer in psmouse
structure in elantech_setup_ps2() and synaptics_init_ps2() when the PS/2
mode is used.
Reported-by: Thorsten Leemhuis <[email protected]>
Tested-by: Thorsten Leemhuis <[email protected]>
Signed-off-by: Jeffery Miller <[email protected]>
Fixes: bf232e460a35 ("Input: psmouse-smbus - allow to control psmouse_deactivate")
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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This reverts commit 92e24e0e57f72e06c2df87116557331fd2d4dda2.
While the patch itself is correct, it uncovered an issue with fallback
to PS/2 mode, where we were leaving psmouse->fast_reconnect handler set
to psmouse_smbus_reconnect(), which caused crashes.
While discussing various approaches to fix the issue it was noted that
this patch ass undesired delay in the "fast" resume path of PS/2 device,
and it would be better to actually use "reset_delay" option defined in
struct rmi_device_platform_data and have RMI code handle it for SMBus
transport as well. So this patch is being reverted to deal with crashes
and a better solution will be merged shortly.
Reported-by: Thorsten Leemhuis <[email protected]>
Closes: https://lore.kernel.org/all/[email protected]/
Signed-off-by: Dmitry Torokhov <[email protected]>
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gpio_int_idx == 0 case
Add a special case for gpio_count == 1 && gpio_int_idx == 0 to
goodix_add_acpi_gpio_mappings().
It seems that on newer x86/ACPI devices the reset and irq GPIOs are no
longer listed as GPIO resources instead there is only 1 GpioInt resource
and _PS0 does the whole reset sequence for us.
This means that we must call acpi_device_fix_up_power() on these devices
to ensure that the chip is reset before we try to use it.
This part was already fixed in commit 3de93e6ed2df ("Input: goodix - call
acpi_device_fix_up_power() in some cases") by adding a call to
acpi_device_fix_up_power() to the generic "Unexpected ACPI resources"
catch all.
But it turns out that this case on some hw needs some more special
handling. Specifically the firmware may bootup with the IRQ pin in
output mode. The reset sequence from ACPI _PS0 (executed by
acpi_device_fix_up_power()) should put the pin in input mode,
but the GPIO subsystem has cached the direction at bootup, causing
request_irq() to fail due to gpiochip_lock_as_irq() failure:
[ 9.119864] Goodix-TS i2c-GDIX1002:00: Unexpected ACPI resources: gpio_count 1, gpio_int_idx 0
[ 9.317443] Goodix-TS i2c-GDIX1002:00: ID 911, version: 1060
[ 9.321902] input: Goodix Capacitive TouchScreen as /devices/pci0000:00/0000:00:17.0/i2c_designware.4/i2c-5/i2c-GDIX1002:00/input/input8
[ 9.327840] gpio gpiochip0: (INT3453:00): gpiochip_lock_as_irq: tried to flag a GPIO set as output for IRQ
[ 9.327856] gpio gpiochip0: (INT3453:00): unable to lock HW IRQ 26 for IRQ
[ 9.327861] genirq: Failed to request resources for GDIX1002:00 (irq 131) on irqchip intel-gpio
[ 9.327912] Goodix-TS i2c-GDIX1002:00: request IRQ failed: -5
Fix this by adding a special case for gpio_count == 1 && gpio_int_idx == 0
which adds an ACPI GPIO lookup table for the int GPIO even though we cannot
use it for reset purposes (as there is no reset GPIO).
Adding the lookup will make the gpiod_int = gpiod_get(..., GPIOD_IN) call
succeed, which will explicitly set the direction to input fixing the issue.
Note this re-uses the acpi_goodix_int_first_gpios[] lookup table, since
there is only 1 GPIO in the ACPI resources the reset entry in that
lookup table will amount to a no-op.
Reported-and-tested-by: Michael Smith <[email protected]>
Signed-off-by: Hans de Goede <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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In the initial boot stage the integrated keyboard of Fujitsu Lifebook E5411
refuses to work and it's not possible to type for example a dm-crypt
passphrase without the help of an external keyboard.
i8042.nomux kernel parameter resolves this issue but using that a PS/2
mouse is detected. This input device is unused even when the i2c-hid-acpi
kernel module is blacklisted making the integrated ELAN touchpad
(04F3:308A) not working at all.
Since the integrated touchpad is managed by the i2c_designware input
driver in the Linux kernel and you can't find a PS/2 mouse port on the
computer I think it's safe to not use the PS/2 mouse port at all.
Signed-off-by: Szilard Fabian <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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Add HyperX controller support to xpad_device and xpad_table.
Suggested-by: Chris Toledanes <[email protected]>
Reviewed-by: Carl Ng <[email protected]>
Signed-off-by: Max Nguyen <[email protected]>
Reviewed-by: Rahul Rameshbabu <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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Prepare input updates for 6.6 merge window.
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The Goodix touchscreen controller with ACPI ID GDX9110 was not recognized
by the goodix driver. This patch adds this ID to the list of supported IDs,
allowing the driver to be used with this device. The change will allow
Linux to be used on ~1 million tablet devices used in Kenyan primary
schools.
Signed-off-by: Felix Engelhardt <[email protected]>
Reviewed-by: Hans de Goede <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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There is no possible for platform_get_irq() to return 0,
and the return value of platform_get_irq() is more sensible
to show the error reason.
Signed-off-by: Ruan Jinjie <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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Instead of rolling custom polling implementation use input core
facilities.
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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Use devm_* api to simplify code, this makes it unnecessary to explicitly
release resources.
Signed-off-by: Yangtao Li <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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The driver has been switched to use IRQF_NO_AUTOEN, but in the error
unwinding and remove paths calls to enable_irq() were left in place, which
will lead to an incorrect enable counter value.
Fixes: bcd9730a04a1 ("Input: move to use request_irq by IRQF_NO_AUTOEN flag")
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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tca6416_keypad_suspend() and tca6416_keypad_resume() only configure device
IRQ for wakeup. I2C core already does this by registering interrupt as a
wakeup IRQ in case when device is marked as wakeup-enabled, so we can
simply remove this code from the driver.
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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Remove option having i2c client contain raw gpio number instead of proper
IRQ number. There are no users of this facility in mainline and it will
allow cleaning up the driver code with regard to wakeup handling, etc.
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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Use devm_* api to simplify code, this makes it unnecessary to explicitly
release resources.
Signed-off-by: Yangtao Li <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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Device core now has facilities to create driver-specific device attributes
as part of driver probing, use them.
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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Use devm_* api to simplify code, this makes it unnecessary to explicitly
release resources.
Signed-off-by: Yangtao Li <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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Rely on the platform and ACPI/DT to set up the interrupt trigger.
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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Instead of using combination of normal IRQ and work item which required
careful handling on device teardown, use standard threaded interrupt that
allows communication wityh the chip over slow (I2C) bus directly in the
interrupt handler.
To support polling mode switch to standard polling support implemented by
the input core.
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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i2c_check_functionality() returns essentially a boolean and not an error
code, so treat it as such.
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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There is a period of time between the psmouse deactivate and the
ability to communicate with the SMBus companion. Insert a
sleep after the deactivate to account for the delay and ensure
the SMBus companion is responsive.
Attempting to read from the SMBus companion too quickly was causing
the touchpad on machines with an i801_smbus companion to stop working
after a sleep/resume cycle.
On resume the rmi4_smbus would fail with errors reading the SMBus version
number:
```
[5454] i2c_i801:i801_check_post:414: i801_smbus 0000:00:1f.3: No response
smbus_result: i2c-0 a=02c f=0000 c=fd BYTE_DATA rd res=-6
rmi4_smbus 0-002c: failed to get SMBus version number!
...
rmi4_f01 rmi4-00.fn01: Failed to restore normal operation: -6.
rmi4_f01 rmi4-00.fn01: Resume failed with code -6.
rmi4_physical rmi4-00: Failed to suspend functions: -6
rmi4_smbus 0-002c: Failed to resume device: -6
```
In this case the rmi_smb_get_version fails with -ENXIO if it happens too
soon after the preceding serio_resume -> psmouse_deactivate call.
On boot this issue could cause the touchpad to stay in the limited PS/2
mode. This only reproduced in 1 in 10 boots on the Lenovo T440p.
Failures in the log on boot would show up as:
```
psmouse serio1: synaptics: Trying to set up SMBus access
[122] i2c_i801:i801_check_post:437: i801_smbus 0000:00:1f.3: No response
psmouse serio1: synaptics: SMbus companion is not ready yet
```
Experimentation on the Lenovo T440p showed that a delay of 7-12ms on
resume allowed the companion to respond.
The 30ms delay in this patch was chosen based on the linux-input message:
Link: https://lore.kernel.org/all/BYAPR03MB47572F2C65E52ED673238D41B2439@BYAPR03MB4757.namprd03.prod.outlook.com/
Signed-off-by: Jeffery Miller <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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Clang warns (or errors with CONFIG_WERROR=y):
drivers/input/keyboard/mcs_touchkey.c:149:49: error: variable 'error' is uninitialized when used here [-Werror,-Wuninitialized]
149 | dev_err(&client->dev, "i2c read error[%d]\n", error);
| ^~~~~
include/linux/dev_printk.h:144:65: note: expanded from macro 'dev_err'
144 | dev_printk_index_wrap(_dev_err, KERN_ERR, dev, dev_fmt(fmt), ##__VA_ARGS__)
| ^~~~~~~~~~~
include/linux/dev_printk.h:110:23: note: expanded from macro 'dev_printk_index_wrap'
110 | _p_func(dev, fmt, ##__VA_ARGS__); \
| ^~~~~~~~~~~
drivers/input/keyboard/mcs_touchkey.c:110:11: note: initialize the variable 'error' to silence this warning
110 | int error;
| ^
| = 0
1 error generated.
A refactoring updated the error handling in this block but did not
update the dev_err() call to use fw_ver instead of error. Do so now to
fix the warning and avoid printing uninitialized memory.
Closes: https://github.com/ClangBuiltLinux/linux/issues/1893
Fixes: e175eae16c1b ("Input: mcs-touchkey - convert to use devm_* api")
Signed-off-by: Nathan Chancellor <[email protected]>
Link: https://lore.kernel.org/r/20230725-mcs_touchkey-fix-wuninitialized-v1-1-615db39af51c@kernel.org
Signed-off-by: Dmitry Torokhov <[email protected]>
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Use devm_* api to simplify code, this makes it unnecessary to explicitly
release resources.
Signed-off-by: Yangtao Li <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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Use devm_* api to simplify code, this makes it unnecessary to explicitly
release resources.
Signed-off-by: Yangtao Li <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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Use devm_* api to simplify code, this makes it unnecessary to explicitly
release resources.
Signed-off-by: Yangtao Li <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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Use devm_* api to simplify code, this makes it unnecessary to explicitly
release resources.
Signed-off-by: Yangtao Li <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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MELFAS MMS114 and similar touchscreens have support for touch keys.
Enable support of them in the driver. The keycodes to emit can be
controlled by the linux,keycodes DT property.
Sidenote - the MAX_TOUCHKEYS value is set to 15, as that's the
maximum value that the ID field can contain. I don't have access
to any datasheets that could confirm or deny whether this is accurate.
Most downstream drivers I've been able to find only use up to 2 keys
(though I did find a driver that mentioned up to 4, but only 2 were
used). They don't have any checks for a maximum keycode value, it is
just extracted from the ID bits (0xf mask).
The drivers I've been able to find also don't use touch ID 0; I assume
that it is never used, so the keycodes provided in the DT start from
touch ID 1. I suppose this is in-line with the regular behavior
for touch IDs in touchscreen events, as there the provided touch ID
is always lowered by 1, which would cause an overflow if it was 0...
Just in case, we quietly return if the touch ID is set to 0 here.
The implementation of the linux,keycodes property handling code was
adapted from the msg2638 driver.
Signed-off-by: Artur Weber <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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MELFAS MMS114 and similar touchscreens have support for touch keys.
Add the linux,keycodes property which can be used to set up the
keycodes for the touch keys.
Acked-by: Conor Dooley <[email protected]>
Signed-off-by: Artur Weber <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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Mark the IRQ as a wake IRQ so it will be enabled during system suspend.
Signed-off-by: Samuel Holland <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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Use the dev_err_probe() helper, instead of open-coding the same
operation.
While at it, invert the error checking logic to simplify code flow.
Signed-off-by: Geert Uytterhoeven <[email protected]>
Link: https://lore.kernel.org/r/d225a837c50e2b19a41555a8f7ce0f94b1689aa4.1689600353.git.geert+renesas@glider.be
Signed-off-by: Dmitry Torokhov <[email protected]>
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The DT of_device.h and of_platform.h date back to the separate
of_platform_bus_type before it as merged into the regular platform bus.
As part of that merge prepping Arm DT support 13 years ago, they
"temporarily" include each other. They also include platform_device.h
and of.h. As a result, there's a pretty much random mix of those include
files used throughout the tree. In order to detangle these headers and
replace the implicit includes with struct declarations, users need to
explicitly include the correct includes.
Signed-off-by: Rob Herring <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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Sync up with mainline to bring in updates to shared infrastructure.
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Point the OF match table directly to the struct that describes the
device as opposed to an intermediate enum; doing so simplifies the
code and avoids a clang warning.
As part of this change, the I2C device ID table is removed, as the
device cannot probe without an OF node due to the unique nature of
the hardware's interrupt pin.
Fixes: f2ba47e65f3b ("Input: add support for Azoteq IQS7210A/7211A/E")
Reported-by: kernel test robot <[email protected]>
Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
Signed-off-by: Jeff LaBundy <[email protected]>
Link: https://lore.kernel.org/r/ZLA+cuciIeVcCvm6@nixie71
Signed-off-by: Dmitry Torokhov <[email protected]>
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Add support for the Azoteq IQS7210A/7211A/E family of trackpad/
touchscreen controllers.
Signed-off-by: Jeff LaBundy <[email protected]>
Link: https://lore.kernel.org/r/ZHVEeDlYyr69A59K@nixie71
Signed-off-by: Dmitry Torokhov <[email protected]>
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Add bindings for the Azoteq IQS7210A/7211A/E family of trackpad/
touchscreen controllers.
Signed-off-by: Jeff LaBundy <[email protected]>
Reviewed-by: Rob Herring <[email protected]>
Link: https://lore.kernel.org/r/ZHVEa0yM1LLUJEfO@nixie71
Signed-off-by: Dmitry Torokhov <[email protected]>
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devm_input_allocate_device() already assigns the @dev.parent field of the
input device/structure, so there's no need to reassign input->dev.parent
to dev.
Signed-off-by: Roi L <[email protected]>
Link: https://lore.kernel.org/r/PH0P220MB0460B69CA018F5515F5FACDDDD53A@PH0P220MB0460.NAMP220.PROD.OUTLOOK.COM
Signed-off-by: Dmitry Torokhov <[email protected]>
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The touchpad of this device is both connected via PS/2 and i2c. This causes
strange behavior when both driver fight for control. The easy fix is to
prevent the PS/2 driver from accessing the mouse port as the full feature
set of the touchpad is only supported in the i2c interface anyway.
The strange behavior in this case is, that when an external screen is
connected and the notebook is closed, the pointer on the external screen is
moving to the lower right corner. When the notebook is opened again, this
movement stops, but the touchpad clicks are unresponsive afterwards until
reboot.
Signed-off-by: Werner Sembach <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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Pass proper PTR_ERR as dev_err_probe() argument.
Fixes: a2c795b696b2 ("Input: bcm-keypad - simplify with dev_err_probe()")
Reported-by: kernel test robot <[email protected]>
Reported-by: Dan Carpenter <[email protected]>
Closes: https://lore.kernel.org/r/[email protected]/
Signed-off-by: Krzysztof Kozlowski <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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Use devm_* api to simplify code, this makes it unnecessary to explicitly
release resources.
Signed-off-by: Yangtao Li <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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Use devm_* api to simplify code, this makes it unnecessary to explicitly
release resources.
Signed-off-by: Yangtao Li <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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Use devm_platform_ioremap_resource() to simplify code.
Signed-off-by: Yangtao Li <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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Use devm_platform_ioremap_resource() to simplify code.
Signed-off-by: Yangtao Li <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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Use devm_platform_ioremap_resource() to simplify code.
Signed-off-by: Yangtao Li <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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Use devm_platform_ioremap_resource() to simplify code.
Signed-off-by: Yangtao Li <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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Convert platform_get_resource(), devm_ioremap_resource() to a single
call to devm_platform_get_and_ioremap_resource(), as this is exactly
what this function does.
Signed-off-by: Yangtao Li <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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Use devm_platform_ioremap_resource() to simplify code.
Signed-off-by: Yangtao Li <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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Use devm_platform_ioremap_resource() to simplify code.
Signed-off-by: Yangtao Li <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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The vendor has introduced a new variant of silicon which is highly
similar to the existing IQS7222A, but with its independent sliders
essentially replaced with a single-contact trackpad.
Update the common driver to support this new device's register map
and report trackpad events. As with the IQS7222A, the new IQS7222D
can report both raw coordinates as well as gestures.
Signed-off-by: Jeff LaBundy <[email protected]>
Link: https://lore.kernel.org/r/ZKrpRh6RT6+6KrMQ@nixie71
Signed-off-by: Dmitry Torokhov <[email protected]>
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