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systemd/rules.d/65-integration.rules
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Yu Watanabe 0f0852d391 udev: fix usb device integration
If the device or one of its parent devices is marked as removable or
unknown, then the device itself should be considered removable.

For example, consider a device connected to a USB port of a dock:
1. xHCI Host Controller (devpath=0, maxchild=12, removable=unknown)
2. USB2.1 Hub (dock upstream) (devpath=3, maxchild=4, removable=removable)
3. USB2.1 Hub (inside dock)  (devpath=3.2, maxchild=4, removable=fixed)
4. USB Device (devpath=3.2.4, maxchild=0, removable=unknown)

Previously, the leaf device was considered as internal. With this
change, the device is considered as external, as there is a removable
parent.

Fixes #43965.

(cherry picked from commit 7580215967)
2026-11-03 11:05:14 +00:00

31 lines
1.6 KiB
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# do not edit this file, it will be overwritten on update
# ID_INTEGRATION variable tells us if a device is internal (inherent part of the system) or external otherwise.
# This must be loaded after 60-persistent-*.rules to have ID_BUS.
ACTION=="remove", GOTO="integration_end"
ENV{ID_BUS}=="", GOTO="integration_end"
# ACPI, platform, PS/2, I2C, RMI, SPI and PCI devices: Internal by default.
ENV{ID_BUS}=="acpi|platform|i8042|i2c|rmi|spi|pci", ENV{ID_INTEGRATION}="internal", GOTO="libinput_integration_compat"
# Bluetooth devices: External by default.
ENV{ID_BUS}=="bluetooth", ENV{ID_INTEGRATION}="external", GOTO="libinput_integration_compat"
# USB devices
ENV{ID_BUS}!="usb", GOTO="libinput_integration_compat"
# Do not set integration for the USB root device.
SUBSYSTEM=="usb", ATTR{devpath}=="0", GOTO="libinput_integration_compat"
# Assume the device is external if any parent USB device is removable.
DRIVERS=="usb", ATTRS{removable}=="removable", ENV{ID_INTEGRATION}="external", GOTO="libinput_integration_compat"
# If no parent device is removable, check for fixed parent devices to assume it is internal.
DRIVERS=="usb", ATTRS{removable}=="fixed", ENV{ID_INTEGRATION}="internal", GOTO="libinput_integration_compat"
# Fallback: if all devices in the USB chain are unknown, assume it is external.
ENV{ID_INTEGRATION}="external", GOTO="libinput_integration_compat"
# libinput compatibility, must be loaded before 70-touchpad.rules to allow hwdb quirks to override.
LABEL="libinput_integration_compat"
ENV{ID_INPUT_TOUCHPAD}=="1", ENV{ID_INPUT_TOUCHPAD_INTEGRATION}="$env{ID_INTEGRATION}"
LABEL="integration_end"