systemd/rules.d/60-drm.rules

# 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
ENV{ID_PATH}=="?*", KERNEL=="card*", SYMLINK+="dri/by-path/$env{ID_PATH}-card"
ENV{ID_PATH}=="?*", KERNEL=="controlD*", SYMLINK+="dri/by-path/$env{ID_PATH}-control"
ENV{ID_PATH}=="?*", KERNEL=="renderD*", SYMLINK+="dri/by-path/$env{ID_PATH}-render"
rules: load path_id on DRM devices The path_id-builtin provides useful unique aliases for DRM devices. If we want to configure DRM render-nodes for compositors, we want to avoid storing the whole sys-path in configuration files. Hence, allow users to store the short PATH_ID instead. Load path_id-builtin unconditionally on DRM devices now to always provide this alias. 2013-11-03 20:01:20 +08:00			`# do not edit this file, it will be overwritten on update`

rules: simply 60-drm.rules We don't need any GOTO, if we merge all matches into a single line. 2013-11-03 23:17:14 +08:00			`ACTION!="remove", SUBSYSTEM=="drm", SUBSYSTEMS=="pci\|usb\|platform", IMPORT{builtin}="path_id"`
rules: add persistent by-path drm rules (#5337) Create persistent symlinks for DRM devices, ex: /dev/dri/by-path/pci-0000:00:02.0-card -> /dev/dri/card1 /dev/dri/by-path/pci-0000:00:02.0-render -> /dev/dri/renderD129 etc... This allows to configure DRM device usage with stable paths. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> 2017-02-14 17:18:27 +08:00
			`# by-path`
			`ENV{ID_PATH}=="?", KERNEL=="card", SYMLINK+="dri/by-path/$env{ID_PATH}-card"`
			`ENV{ID_PATH}=="?", KERNEL=="controlD", SYMLINK+="dri/by-path/$env{ID_PATH}-control"`
			`ENV{ID_PATH}=="?", KERNEL=="renderD", SYMLINK+="dri/by-path/$env{ID_PATH}-render"`