systemd/rules.d/60-drm.rules
Yu Watanabe 873be895ed udev: add USB revision in ID_PATH
xHCI host controller may register two (or more?) USB root hubs for USB
2.0 and USB 3.0, and devices under the hubs may have same ID_PATH.
So, to avoid the conflict, let's introduce ID_PATH_WITH_USB_REVISION
that includes the USB revision.

Closes #19406.
2023-05-20 14:27:10 +09:00

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# do not edit this file, it will be overwritten on update
ACTION!="remove", SUBSYSTEM=="drm", SUBSYSTEMS=="pci|usb|platform", IMPORT{builtin}="path_id"
# by-path
KERNEL=="card*", ENV{ID_PATH}=="?*", SYMLINK+="dri/by-path/$env{ID_PATH}-card"
KERNEL=="card*", ENV{ID_PATH_WITH_USB_REVISION}=="?*", SYMLINK+="dri/by-path/$env{ID_PATH_WITH_USB_REVISION}-card"
KERNEL=="controlD*", ENV{ID_PATH}=="?*", SYMLINK+="dri/by-path/$env{ID_PATH}-control"
KERNEL=="controlD*", ENV{ID_PATH_WITH_USB_REVISION}=="?*", SYMLINK+="dri/by-path/$env{ID_PATH_WITH_USB_REVISION}-control"
KERNEL=="renderD*", ENV{ID_PATH}=="?*", SYMLINK+="dri/by-path/$env{ID_PATH}-render"
KERNEL=="renderD*", ENV{ID_PATH_WITH_USB_REVISION}=="?*", SYMLINK+="dri/by-path/$env{ID_PATH_WITH_USB_REVISION}-render"