From 8416dc8bcae28bd90ec4a3b7b6dc2d0914c472fc Mon Sep 17 00:00:00 2001 From: Max Staudt Date: Wed, 17 Apr 2024 15:30:44 +0900 Subject: [PATCH] udev: permanent symlinks with USB revision for /dev/media* As a follow-up in the style of: 873be895ed ("udev: add USB revision in ID_PATH") this patch adds a second symlink for media controllers, this time including the USB revision. This means that in addition to persistent symlinks like: pci-0000:04:00.3-usb-0:1:1.0-media-controller -> ../../media0 We now also get: pci-0000:04:00.3-usbv2-0:1:1.0-media-controller -> ../../media0 ...which helps distinguish media devices plugged into different USB root hubs provided by the same PCI card, at least as long as they are for different USB revisions. Fixes: 04f19d6735 ("udev: Add /dev/media/by-path symlinks for media controllers") --- rules.d/60-persistent-media-controller.rules | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/rules.d/60-persistent-media-controller.rules b/rules.d/60-persistent-media-controller.rules index bf614d97837..8c2175c5bac 100644 --- a/rules.d/60-persistent-media-controller.rules +++ b/rules.d/60-persistent-media-controller.rules @@ -7,6 +7,7 @@ SUBSYSTEM!="media", GOTO="persistent_media_ctl_end" ENV{MAJOR}=="", GOTO="persistent_media_ctl_end" IMPORT{builtin}="path_id" -ENV{ID_PATH}=="?*", KERNEL=="media*", SYMLINK+="media/by-path/$env{ID_PATH}-media-controller" +KERNEL=="media*", ENV{ID_PATH_WITH_USB_REVISION}=="?*", SYMLINK+="media/by-path/$env{ID_PATH_WITH_USB_REVISION}-media-controller" +KERNEL=="media*", ENV{ID_PATH_WITH_USB_REVISION}=="", ENV{ID_PATH}=="?*", SYMLINK+="media/by-path/$env{ID_PATH}-media-controller" LABEL="persistent_media_ctl_end" -- 2.47.3