Now that we're not invoking kfunc destructors when the kptr in a map was
NULL, we no longer require NULL checks in many of our KF_RELEASE kfuncs.
This patch removes those NULL checks.
Signed-off-by: David Vernet <void@manifault.com>
Link: https://lore.kernel.org/r/20230325213144.486885-3-void@manifault.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Here is the large set of driver core changes for 6.3-rc1.
There's a lot of changes this development cycle, most of the work falls
into two different categories:
- fw_devlink fixes and updates. This has gone through numerous review
cycles and lots of review and testing by lots of different devices.
Hopefully all should be good now, and Saravana will be keeping a
watch for any potential regression on odd embedded systems.
- driver core changes to work to make struct bus_type able to be moved
into read-only memory (i.e. const) The recent work with Rust has
pointed out a number of areas in the driver core where we are
passing around and working with structures that really do not have
to be dynamic at all, and they should be able to be read-only making
things safer overall. This is the contuation of that work (started
last release with kobject changes) in moving struct bus_type to be
constant. We didn't quite make it for this release, but the
remaining patches will be finished up for the release after this
one, but the groundwork has been laid for this effort.
Other than that we have in here:
- debugfs memory leak fixes in some subsystems
- error path cleanups and fixes for some never-able-to-be-hit
codepaths.
- cacheinfo rework and fixes
- Other tiny fixes, full details are in the shortlog
All of these have been in linux-next for a while with no reported
problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updates from Greg KH:
"Here is the large set of driver core changes for 6.3-rc1.
There's a lot of changes this development cycle, most of the work
falls into two different categories:
- fw_devlink fixes and updates. This has gone through numerous review
cycles and lots of review and testing by lots of different devices.
Hopefully all should be good now, and Saravana will be keeping a
watch for any potential regression on odd embedded systems.
- driver core changes to work to make struct bus_type able to be
moved into read-only memory (i.e. const) The recent work with Rust
has pointed out a number of areas in the driver core where we are
passing around and working with structures that really do not have
to be dynamic at all, and they should be able to be read-only
making things safer overall. This is the contuation of that work
(started last release with kobject changes) in moving struct
bus_type to be constant. We didn't quite make it for this release,
but the remaining patches will be finished up for the release after
this one, but the groundwork has been laid for this effort.
Other than that we have in here:
- debugfs memory leak fixes in some subsystems
- error path cleanups and fixes for some never-able-to-be-hit
codepaths.
- cacheinfo rework and fixes
- Other tiny fixes, full details are in the shortlog
All of these have been in linux-next for a while with no reported
problems"
[ Geert Uytterhoeven points out that that last sentence isn't true, and
that there's a pending report that has a fix that is queued up - Linus ]
* tag 'driver-core-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (124 commits)
debugfs: drop inline constant formatting for ERR_PTR(-ERROR)
OPP: fix error checking in opp_migrate_dentry()
debugfs: update comment of debugfs_rename()
i3c: fix device.h kernel-doc warnings
dma-mapping: no need to pass a bus_type into get_arch_dma_ops()
driver core: class: move EXPORT_SYMBOL_GPL() lines to the correct place
Revert "driver core: add error handling for devtmpfs_create_node()"
Revert "devtmpfs: add debug info to handle()"
Revert "devtmpfs: remove return value of devtmpfs_delete_node()"
driver core: cpu: don't hand-override the uevent bus_type callback.
devtmpfs: remove return value of devtmpfs_delete_node()
devtmpfs: add debug info to handle()
driver core: add error handling for devtmpfs_create_node()
driver core: bus: update my copyright notice
driver core: bus: add bus_get_dev_root() function
driver core: bus: constify bus_unregister()
driver core: bus: constify some internal functions
driver core: bus: constify bus_get_kset()
driver core: bus: constify bus_register/unregister_notifier()
driver core: remove private pointer from struct bus_type
...
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Merge tag 'for-linus-2023022201' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid
Pull HID updates from Benjamin Tissoires:
- HID-BPF infrastructure: this allows to start using HID-BPF. Note that
the mechanism to ship HID-BPF program through the kernel tree is
still not implemented yet (but is planned).
This should be a no-op for 99% of users. Also we are gaining
kselftests for the HID tree (Benjamin Tissoires)
- Some UAF fixes in workers when using uhid (Pietro Borrello & Benjamin
Tissoires)
- Constify hid_ll_driver (Thomas Weißschuh)
- Allow more custom IIO sensors through HID (Philipp Jungkamp)
- Logitech HID++ fixes for scroll wheel, protocol and debug (Bastien
Nocera)
- Some new device support: Steam Deck (Vicki Pfau), UClogic (José
Expósito), Logitech G923 Xbox Edition steering wheel (Walt Holman),
EVision keyboards (Philippe Valembois)
- other assorted code cleanups and fixes
* tag 'for-linus-2023022201' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid: (99 commits)
HID: mcp-2221: prevent UAF in delayed work
hid: bigben_probe(): validate report count
HID: asus: use spinlock to safely schedule workers
HID: asus: use spinlock to protect concurrent accesses
HID: bigben: use spinlock to safely schedule workers
HID: bigben_worker() remove unneeded check on report_field
HID: bigben: use spinlock to protect concurrent accesses
HID: logitech-hidpp: Add myself to authors
HID: logitech-hidpp: Retry commands when device is busy
HID: logitech-hidpp: Add more debug statements
HID: Add support for Logitech G923 Xbox Edition steering wheel
HID: logitech-hidpp: Add Signature M650
HID: logitech-hidpp: Remove HIDPP_QUIRK_NO_HIDINPUT quirk
HID: logitech-hidpp: Don't restart communication if not necessary
HID: logitech-hidpp: Add constants for HID++ 2.0 error codes
Revert "HID: logitech-hidpp: add a module parameter to keep firmware gestures"
HID: logitech-hidpp: Hard-code HID++ 1.0 fast scroll support
HID: i2c-hid: goodix: Add mainboard-vddio-supply
dt-bindings: HID: i2c-hid: goodix: Add mainboard-vddio-supply
HID: i2c-hid: goodix: Stop tying the reset line to the regulator
...
Initial support of HID-BPF (Benjamin Tissoires)
The history is a little long for this series, as it was intended to be
sent for v6.2. However some last minute issues forced us to postpone it
to v6.3.
Conflicts:
* drivers/hid/i2c-hid/Kconfig:
commit bf7660dab3 ("HID: stop drivers from selecting CONFIG_HID")
conflicts with commit 2afac81dd1 ("HID: fix I2C_HID not selected
when I2C_HID_OF_ELAN is")
the resolution is simple enough: just drop the "default" and "select"
lines as the new commit from Arnd is doing
- dev_dbg cleanup (Thomas Weißschuh)
- cleanup i2c-hid-acpi (Andy Shevchenko)
- goodix: revert/fixes for an actual production device compared to the
manufacturer sample (Douglas Anderson)
- constify hid_ll_driver (Thomas Weißschuh)
- map standard Battery System Charging to upower (José Expósito)
- couple of assorted fixes and new handling of HID usages (Jingyuan
Liang & Ronald Tschalär)
Highlights:
- AMD PMC: Improvements to aid s2idle debugging
- Dell WMI-DDV: hwmon support
- INT3472 camera sensor power-management: Improve privacy LED support
- Intel VSEC: Base TPMI (Topology Aware Register and PM Capsule Interface) support
- Mellanox: SN5600 and Nvidia L1 switch support
- Microsoft Surface Support: Various cleanups + code improvements
- tools/intel-speed-select: Various improvements
- Miscellaneous other cleanups / fixes
The following is an automated git shortlog grouped by driver:
Add include/linux/platform_data/x86 to MAINTAINERS:
- Add include/linux/platform_data/x86 to MAINTAINERS
Documentation/ABI:
- Add new attribute for mlxreg-io sysfs interfaces
Fix header inclusion in linux/platform_data/x86/soc.h:
- Fix header inclusion in linux/platform_data/x86/soc.h
HID:
- surface-hid: Use target-ID enum instead of hard-coding values
MAINTAINERS:
- dell-wmi-sysman: drop Divya Bharathi
- Add entry for TPMI driver
Merge tag 'ib-leds-led_get-v6.3' into HEAD:
- Merge tag 'ib-leds-led_get-v6.3' into HEAD
acerhdf:
- Drop empty platform remove function
apple_gmux:
- Drop no longer used ACPI_VIDEO Kconfig dependency
dell-ddv:
- Prefer asynchronous probing
- Add hwmon support
- Add "force" module param
- Replace EIO with ENOMSG
- Return error if buffer is empty
- Add support for interface version 3
dell-smo8800:
- Use min_t() for comparison and assignment
dell-wmi-sysman:
- Make kobj_type structure constant
hp-wmi:
- Ignore Win-Lock key events
int1092:
- Switch to use acpi_evaluate_dsm_typed()
int3472/discrete:
- add LEDS_CLASS dependency
- Drop unnecessary obj->type == string check
- Get the polarity from the _DSM entry
- Move GPIO request to skl_int3472_register_clock()
- Create a LED class device for the privacy LED
- Refactor GPIO to sensor mapping
intel:
- punit_ipc: Drop empty platform remove function
- oaktrail: Drop empty platform remove function
intel/pmc:
- Switch to use acpi_evaluate_dsm_typed()
leds:
- led-class: Add generic [devm_]led_get()
- led-class: Add __devm_led_get() helper
- led-class: Add led_module_get() helper
- led-class: Add missing put_device() to led_put()
media:
- v4l2-core: Make the v4l2-core code enable/disable the privacy LED if present
nvidia-wmi-ec-backlight:
- Add force module parameter
platform:
- mellanox: mlx-platform: Move bus shift assignment out of the loop
- mellanox: mlx-platform: Add mux selection register to regmap
- mellanox: Extend all systems with I2C notification callback
- mellanox: Split logic in init and exit flow
- mellanox: Split initialization procedure
- mellanox: Introduce support of new Nvidia L1 switch
- mellanox: Introduce support for next-generation 800GB/s switch
- mellanox: Cosmetic changes - rename to more common name
- mellanox: Change "reset_pwr_converter_fail" attribute
- mellanox: Introduce support for rack manager switch
platform/mellanox:
- mlxreg-hotplug: Allow more flexible hotplug events configuration
platform/surface:
- Switch to use acpi_evaluate_dsm_typed()
- aggregator: Rename top-level request functions to avoid ambiguities
- aggregator_registry: Fix target-ID of base-hub
- aggregator: Enforce use of target-ID enum in device ID macros
- dtx: Use target-ID enum instead of hard-coding values
- aggregator_tabletsw: Use target-ID enum instead of hard-coding values
- aggregator_hub: Use target-ID enum instead of hard-coding values
- aggregator: Add target and source IDs to command trace events
- aggregator: Improve documentation and handling of message target and source IDs
platform/x86/amd:
- pmc: Add line break for readability
- pmc: differentiate STB/SMU messaging prints
- pmc: Write dummy postcode into the STB DRAM
- pmc: Add num_samples message id support to STB
platform/x86/amd/pmf:
- Add depends on CONFIG_POWER_SUPPLY
platform/x86/intel:
- Intel TPMI enumeration driver
platform/x86/intel/tpmi:
- ADD tpmi external interface for tpmi feature drivers
- Process CPU package mapping
platform/x86/intel/vsec:
- Use mutex for ida_alloc() and ida_free()
- Support private data
- Enhance and Export intel_vsec_add_aux()
- Add TPMI ID
platform_data/mlxreg:
- Add field with mapped resource address
think-lmi:
- Make kobj_type structure constant
- Use min_t() for comparison and assignment
tools/power/x86/intel-speed-select:
- v1.14 release
- Adjust uncore max/min frequency
- Add Emerald Rapid quirk
- Fix display of uncore min frequency
- turbo-freq auto mode with SMT off
- cpufreq reads on offline CPUs
- Use null-terminated string
- Remove duplicate dup()
- Handle open() failure case
- Remove unused non_block flag
- Remove wrong check in set_isst_id()
x86/platform/uv:
- Make kobj_type structure constant
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Merge tag 'platform-drivers-x86-v6.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver updates from Hans de Goede:
- AMD PMC: Improvements to aid s2idle debugging
- Dell WMI-DDV: hwmon support
- INT3472 camera sensor power-management: Improve privacy LED support
- Intel VSEC: Base TPMI (Topology Aware Register and PM Capsule
Interface) support
- Mellanox: SN5600 and Nvidia L1 switch support
- Microsoft Surface Support: Various cleanups + code improvements
- tools/intel-speed-select: Various improvements
- Miscellaneous other cleanups / fixes
* tag 'platform-drivers-x86-v6.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (80 commits)
platform/x86: nvidia-wmi-ec-backlight: Add force module parameter
platform/x86/amd/pmf: Add depends on CONFIG_POWER_SUPPLY
platform/x86: dell-ddv: Prefer asynchronous probing
platform/x86: dell-ddv: Add hwmon support
Documentation/ABI: Add new attribute for mlxreg-io sysfs interfaces
platform: mellanox: mlx-platform: Move bus shift assignment out of the loop
platform: mellanox: mlx-platform: Add mux selection register to regmap
platform_data/mlxreg: Add field with mapped resource address
platform/mellanox: mlxreg-hotplug: Allow more flexible hotplug events configuration
platform: mellanox: Extend all systems with I2C notification callback
platform: mellanox: Split logic in init and exit flow
platform: mellanox: Split initialization procedure
platform: mellanox: Introduce support of new Nvidia L1 switch
platform: mellanox: Introduce support for next-generation 800GB/s switch
platform: mellanox: Cosmetic changes - rename to more common name
platform: mellanox: Change "reset_pwr_converter_fail" attribute
platform: mellanox: Introduce support for rack manager switch
MAINTAINERS: dell-wmi-sysman: drop Divya Bharathi
x86/platform/uv: Make kobj_type structure constant
platform/x86: think-lmi: Make kobj_type structure constant
...
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Merge tag 'hyperv-next-signed-20230220' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux
Pull hyperv updates from Wei Liu:
- allow Linux to run as the nested root partition for Microsoft
Hypervisor (Jinank Jain and Nuno Das Neves)
- clean up the return type of callback functions (Dawei Li)
* tag 'hyperv-next-signed-20230220' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
x86/hyperv: Fix hv_get/set_register for nested bringup
Drivers: hv: Make remove callback of hyperv driver void returned
Drivers: hv: Enable vmbus driver for nested root partition
x86/hyperv: Add an interface to do nested hypercalls
Drivers: hv: Setup synic registers in case of nested root partition
x86/hyperv: Add support for detecting nested hypervisor
If the device is plugged/unplugged without giving time for mcp_init_work()
to complete, we might kick in the devm free code path and thus have
unavailable struct mcp_2221 while in delayed work.
Canceling the delayed_work item is enough to solve the issue, because
cancel_delayed_work_sync will prevent the work item to requeue itself.
Fixes: 960f9df7c6 ("HID: mcp2221: add ADC/DAC support via iio subsystem")
CC: stable@vger.kernel.org
Acked-by: Jiri Kosina <jkosina@suse.cz>
Link: https://lore.kernel.org/r/20230215-wip-mcp2221-v2-1-109f71fd036e@redhat.com
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
bigben_probe() does not validate that the output report has the
needed report values in the first field.
A malicious device registering a report with one field and a single
value causes an head OOB write in bigben_worker() when
accessing report_field->value[1] to report_field->value[7].
Use hid_validate_values() which takes care of all the needed checks.
Fixes: 256a90ed9e ("HID: hid-bigbenff: driver for BigBen Interactive PS3OFMINIPAD gamepad")
Signed-off-by: Pietro Borrello <borrello@diag.uniroma1.it>
Link: https://lore.kernel.org/r/20230211-bigben-oob-v1-1-d2849688594c@diag.uniroma1.it
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Use spinlocks to deal with workers introducing a wrapper
asus_schedule_work(), and several spinlock checks.
Otherwise, asus_kbd_backlight_set() may schedule led->work after the
structure has been freed, causing a use-after-free.
Fixes: af22a610bc ("HID: asus: support backlight on USB keyboards")
Signed-off-by: Pietro Borrello <borrello@diag.uniroma1.it>
Link: https://lore.kernel.org/r/20230125-hid-unregister-leds-v4-5-7860c5763c38@diag.uniroma1.it
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Use spinlocks to deal with workers introducing a wrapper
bigben_schedule_work(), and several spinlock checks.
Otherwise, bigben_set_led() may schedule bigben->worker after the
structure has been freed, causing a use-after-free.
Fixes: 4eb1b01de5 ("HID: hid-bigbenff: fix race condition for scheduled work during removal")
Signed-off-by: Pietro Borrello <borrello@diag.uniroma1.it>
Link: https://lore.kernel.org/r/20230125-hid-unregister-leds-v4-3-7860c5763c38@diag.uniroma1.it
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
bigben_worker() checks report_field to be non-NULL.
The check has been added in commit
918aa1ef10 ("HID: bigbenff: prevent null pointer dereference")
to prevent a NULL pointer crash.
However, the true root cause was a missing check for output
reports, patched in commit
c7bf714f87 ("HID: check empty report_list in bigben_probe()"),
where the type-confused report list_entry was overlapping with
a NULL pointer, which was then causing the crash.
Fixes: 918aa1ef10 ("HID: bigbenff: prevent null pointer dereference")
Signed-off-by: Pietro Borrello <borrello@diag.uniroma1.it>
Link: https://lore.kernel.org/r/20230125-hid-unregister-leds-v4-2-7860c5763c38@diag.uniroma1.it
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
bigben driver has a worker that may access data concurrently.
Proct the accesses using a spinlock.
Fixes: 256a90ed9e ("HID: hid-bigbenff: driver for BigBen Interactive PS3OFMINIPAD gamepad")
Signed-off-by: Pietro Borrello <borrello@diag.uniroma1.it>
Link: https://lore.kernel.org/r/20230125-hid-unregister-leds-v4-1-7860c5763c38@diag.uniroma1.it
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
As discussed with HID maintainer Benjamin Tissoires, add myself to the
authors list and MAINTAINERS file.
Signed-off-by: Bastien Nocera <hadess@hadess.net>
Link: https://lore.kernel.org/r/20230209154916.462158-2-hadess@hadess.net
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Handle the busy error coming from the device or receiver. The
documentation says a busy error can be returned when:
"
Device (or receiver) cannot answer immediately to this request
for any reason i.e:
- already processing a request from the same or another SW
- pipe full
"
Signed-off-by: Bastien Nocera <hadess@hadess.net>
Link: https://lore.kernel.org/r/20230209154916.462158-1-hadess@hadess.net
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Add support for HID++ over Bluetooth for the Logitech Signature
M650 mouse. It comes with a dongle but can also be used over Bluetooth
without one.
Signed-off-by: Bastien Nocera <hadess@hadess.net>
Link: https://lore.kernel.org/r/20220404100311.3304-1-hadess@hadess.net
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
HIDPP_QUIRK_NO_HIDINPUT isn't used by any devices but still happens to
work as HIDPP_QUIRK_DELAYED_INIT is defined to the same value. Remove
HIDPP_QUIRK_NO_HIDINPUT and use HIDPP_QUIRK_DELAYED_INIT everywhere
instead.
Tested on a T650 which requires that quirk, and a number of unifying and
Bluetooth devices that don't.
Signed-off-by: Bastien Nocera <hadess@hadess.net>
Link: https://lore.kernel.org/r/20230125121723.3122-2-hadess@hadess.net
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Don't stop and restart communication with the device unless we need to
modify the connect flags used because of a device quirk.
Signed-off-by: Bastien Nocera <hadess@hadess.net>
Link: https://lore.kernel.org/r/20230125121723.3122-1-hadess@hadess.net
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Now that we're in 2022, and the majority of desktop environments can and
should support touchpad gestures through libinput, remove the legacy
module parameter that made it possible to use gestures implemented in
firmware.
This will eventually allow simplifying the driver's initialisation code.
This reverts commit 9188dbaed6.
Signed-off-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Link: https://lore.kernel.org/r/20221220154345.474596-1-hadess@hadess.net
HID++ 1.0 devices only export whether Fast Scrolling is enabled, not
whether they are capable of it. Reinstate the original quirks for the 3
supported mice so fast scrolling works again on those devices.
Fixes: 908d325e16 ("HID: logitech-hidpp: Detect hi-res scrolling support")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=216903
Signed-off-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Link: https://lore.kernel.org/r/20230116130937.391441-1-hadess@hadess.net
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Merge tag 'for-linus-2023020901' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid
Pull HID fixes from Benjamin Tissoires:
- fix potential infinite loop with a badly crafted HID device (Xin
Zhao)
- fix regression from 6.1 in USB logitech devices potentially making
their mouse wheel not working (Bastien Nocera)
- clean up in AMD sensors, which fixes a long time resume bug (Mario
Limonciello)
- few device small fixes and quirks
* tag 'for-linus-2023020901' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid:
HID: Ignore battery for ELAN touchscreen 29DF on HP
HID: amd_sfh: if no sensors are enabled, clean up
HID: logitech: Disable hi-res scrolling on USB
HID: core: Fix deadloop in hid_apply_multiplier.
HID: Ignore battery for Elan touchscreen on Asus TP420IA
HID: elecom: add support for TrackBall 056E:011C
As talked about in the patch ("dt-bindings: HID: i2c-hid: goodix: Add
mainboard-vddio-supply") we may need to power up a 1.8V rail on the
host associated with touchscreen IO. Let's add support in the driver
for it.
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Link: https://lore.kernel.org/r/20230206184744.6.Ic234b931025d1f920ce9e06fff294643943a65ad@changeid
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
In commit 18eeef46d3 ("HID: i2c-hid: goodix: Tie the reset line to
true state of the regulator"), we started tying the reset line of
Goodix touchscreens to the regulator.
The primary motivation for that patch was some pre-production hardware
(specifically sc7180-trogdor-homestar) where it was proposed to hook
the touchscreen's main 3.3V power rail to an always-on supply. In such
a case, when we turned "off" the touchscreen in Linux it was bad to
assert the "reset" GPIO because that was causing a power drain. The
patch accomplished that goal and did it in a general sort of way that
didn't require special properties to be added in the device tree for
homestar.
It turns out that the design of using an always-on power rail for the
touchscreen was rejected soon after the patch was written and long
before sc7180-trogdor-homestar went into production. The final design
of homestar actually fully separates the rail for the touchscreen and
the display panel and both can be powered off and on. That means that
the original motivation for the feature is gone.
There are 3 other users of the goodix i2c-hid driver in mainline.
I'll first talk about 2 of the other users in mainline: coachz and
mrbland. On both coachz and mrbland the touchscreen power and panel
power _are_ shared. That means that the patch to tie the reset line to
the true state of the regulator _is_ doing something on those
boards. Specifically, the patch reduced power consumption by tens of
mA in the case where we turned the touchscreen off but left the panel
on. Other than saving a small bit of power, the patch wasn't truly
necessary. That being said, even though a small bit of power was saved
in the state of "panel on + touchscreen off", that's not actually a
state we ever expect to be in, except perhaps for very short periods
of time at boot or during suspend/resume. Thus, the patch is truly not
necessary. It should be further noted that, as documented in the
original patch, the current code still didn't optimize power for every
corner case of the "shared rail" situation.
The last user in mainline was very recently added: evoker. Evoker is
actually the motivation for me removing this bit of code. It turns out
that for evoker we need to manage a second power rail for IO to the
touchscreen. Trying to fit the management of this IO rail into the
regulator notifiers turns out to be extremely hard. To avoid lockdep
splats you shouldn't enable/disable other regulators in regulator
notifiers and trying to find a way around this was going to be fairly
difficult.
Given the lack of any true motivation to tie the reset line to the
regulator, lets go back to the simpler days and remove the code. This
is, effectively, a revert of commit bdbc65eb77 ("HID: i2c-hid:
goodix: Fix a lockdep splat"), commit 25ddd7cfc5 ("HID: i2c-hid:
goodix: Use the devm variant of regulator_register_notifier()"), and
commit 18eeef46d3 ("HID: i2c-hid: goodix: Tie the reset line to true
state of the regulator").
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Link: https://lore.kernel.org/r/20230206184744.4.I085b32b6140c7d1ac4e7e97b712bff9dd5962b62@changeid
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
In certain circumstances, such as when creating I2C-connected HID
devices, we want to pass and retain some quirks (axis inversion, etc).
The source of such quirks may be device tree, or DMI data, or something
else not readily available to the HID core itself and therefore cannot
be reconstructed easily. To allow this, introduce "initial_quirks" field
in hid_device structure and use it when determining the final set of
quirks.
This fixes the problem with i2c-hid setting up device-tree sourced
quirks too late and losing them on device rebind, and also allows to
sever the tie between hid-code and i2c-hid when applying DMI-based
quirks.
Fixes: b60d3c803d ("HID: i2c-hid-of: Expose the touchscreen-inverted properties")
Fixes: a2f416bf06 ("HID: multitouch: Add quirks for flipped axes")
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Tested-by: Allen Ballway <ballway@chromium.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Alistair Francis <alistair@alistair23.me>
Link: https://lore.kernel.org/r/Y+LYwu3Zs13hdVDy@google.com
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
For now only supports one model and only filters out bogus reports sent
when the keyboard has been configured through hidraw.
Without this, as events are not released, soft repeat floods userspace
with unknown key events.
Signed-off-by: Philippe Valembois <lephilousophe@gmail.com>
Link: https://lore.kernel.org/r/20230125211511.12266-1-lephilousophe@gmail.com
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
The touchscreen reports a battery status of 0% and jumps to 1% when a
stylus is used. The device ID was added and the battery ignore quirk was
enabled for it.
Signed-off-by: Luka Guzenko <l.guzenko@web.de>
Link: https://lore.kernel.org/r/20230120223741.3007-1-l.guzenko@web.de
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
The custom "debug" module parameter is fairly inflexible.
It can only manage debugging for all calls dbg_hid() at the same time.
Furthermore it creates a mismatch between calls to hid_dbg() which can
be managed by CONFIG_DYNAMIC_DEBUG and dbg_hid() which is managed by the
module parameter.
Furthermore the change to pr_debug() allows the debugging statements to
be completely compiled-out if desired.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Tested-by: Bastien Nocera <hadess@hadess.net>
Link: https://lore.kernel.org/r/20221223-hid-dbg-v1-1-5dcf8794f7f9@weissschuh.net
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Since commit 52d2253469 ("HID: Make lowlevel driver structs const")
the lowlevel HID drivers are only exposed as const.
Take advantage of this to constify the underlying structure, too.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Maximilian Luz <luzmaximilian@gmail.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20230130-hid-const-ll-driver-v1-6-3fc282b3b1d0@weissschuh.net
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Since commit 52d2253469 ("HID: Make lowlevel driver structs const")
the lowlevel HID drivers are only exposed as const.
Take advantage of this to constify the underlying structure, too.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20230130-hid-const-ll-driver-v1-5-3fc282b3b1d0@weissschuh.net
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Since commit 52d2253469 ("HID: Make lowlevel driver structs const")
the lowlevel HID drivers are only exposed as const.
Take advantage of this to constify the underlying structure, too.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20230130-hid-const-ll-driver-v1-4-3fc282b3b1d0@weissschuh.net
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Since commit 52d2253469 ("HID: Make lowlevel driver structs const")
the lowlevel HID drivers are only exposed as const.
Take advantage of this to constify the underlying structure, too.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20230130-hid-const-ll-driver-v1-3-3fc282b3b1d0@weissschuh.net
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Since commit 52d2253469 ("HID: Make lowlevel driver structs const")
the lowlevel HID drivers are only exposed as const.
Take advantage of this to constify the underlying structure, too.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Wei Liu <wei.liu@kernel.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20230130-hid-const-ll-driver-v1-2-3fc282b3b1d0@weissschuh.net
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Since commit 52d2253469 ("HID: Make lowlevel driver structs const")
the lowlevel HID drivers are only exposed as const.
Take advantage of this to constify the underlying structure, too.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20230130-hid-const-ll-driver-v1-1-3fc282b3b1d0@weissschuh.net
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
It was reported that commit b300667b33 ("HID: amd_sfh: Disable the
interrupt for all command") had caused increased resume time on HP Envy
x360.
Before this commit 3 sensors were reported, but they were not actually
functional. After this commit the sensors are no longer reported, but
also the resume time increased.
To avoid this problem explicitly look for the number of disabled sensors.
If all the sensors are disabled, clean everything up.
Fixes: b300667b33 ("HID: amd_sfh: Disable the interrupt for all command")
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2115
Reported-by: Xaver Hugl <xaver.hugl@gmail.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Acked-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Link: https://lore.kernel.org/r/20230203220850.13924-1-mario.limonciello@amd.com
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
On some Logitech mice, such as the G903, and possibly the G403, the HID
events are generated on a different interface to the HID++ one.
If we enable hi-res through the HID++ interface, the HID interface
wouldn't know anything about it, and handle the events as if they were
regular scroll events, making the mouse unusable.
Disable hi-res scrolling on those devices until we implement scroll
events through HID++.
Signed-off-by: Bastien Nocera <hadess@hadess.net>
Tested-by: Tobias Klausmann <klausman@schwarzvogel.de>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=216885
Fixes: 908d325e16 ("HID: logitech-hidpp: Detect hi-res scrolling support")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20230203101800.139380-1-hadess@hadess.net
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
