From: Lennart Poettering <lennart@poettering.net>
Date: Mon, 9 Nov 2009 22:19:04 +0000 (+0100)
Subject: Revert "sound: include ALSA sound card id in /dev/snd/by-id/ links"
X-Git-Tag: 174~727
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=commitdiff_plain;h=088fbefafdf9deec211f7069b5ad0836f462cbab

Revert "sound: include ALSA sound card id in /dev/snd/by-id/ links"

This reverts commit 68bffc607f7f0414fee77fa481d9c133ce0798e9.

After discussing this with Kay we decided to drop this again as by-id
links only make sense for devices that have a unique serial id. If they
don't any attempts to make them unique have the side effect of
nourishing assumptions by users that cannot be met, as the by-id device
link of a device could differ depending on the history of simultaneously
plugged in device.

So, to make sure that all device nodes follow the same rules for by-id/
symlinks, drop this patch again.
---

diff --git a/rules/rules.d/60-persistent-alsa.rules b/rules/rules.d/60-persistent-alsa.rules
index 624f57ade..a5206fdbb 100644
--- a/rules/rules.d/60-persistent-alsa.rules
+++ b/rules/rules.d/60-persistent-alsa.rules
@@ -5,9 +5,9 @@ SUBSYSTEM!="sound", GOTO="persistent_alsa_end"
 KERNEL!="controlC[0-9]*", GOTO="persistent_alsa_end"
 
 SUBSYSTEMS=="usb", ENV{ID_MODEL}=="", IMPORT{program}="usb_id --export %p"
-SUBSYSTEMS=="usb", ATTRS{bInterfaceNumber}!="", ENV{ID_IFACE}="$attr{bInterfaceNumber}"
-ENV{ID_SERIAL}=="?*", ENV{ID_IFACE}=="?*", SYMLINK+="snd/by-id/$env{ID_BUS}-$env{ID_SERIAL}-$env{ID_IFACE}-$attr{../id}"
-ENV{ID_SERIAL}=="?*", ENV{ID_IFACE}=="", SYMLINK+="snd/by-id/$env{ID_BUS}-$env{ID_SERIAL}-$attr{../id}"
+SUBSYSTEMS=="usb", ENV{ID_IFACE}="$attr{bInterfaceNumber}"
+ENV{ID_SERIAL}=="?*", ENV{ID_IFACE}=="?*", SYMLINK+="snd/by-id/$env{ID_BUS}-$env{ID_SERIAL}-$env{ID_IFACE}"
+ENV{ID_SERIAL}=="?*", ENV{ID_IFACE}=="", SYMLINK+="snd/by-id/$env{ID_BUS}-$env{ID_SERIAL}"
 
 ENV{ID_PATH}=="", IMPORT{program}="path_id %p"
 ENV{ID_PATH}=="?*", SYMLINK+="snd/by-path/$env{ID_PATH}"