From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Thu, 3 Nov 2022 00:52:23 +0000 (+0900)
Subject: udev: add safe guard for setting by-id symlink
X-Git-Tag: v253-rc1~602^2
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F25246%2Fhead;p=thirdparty%2Fsystemd.git

udev: add safe guard for setting by-id symlink

The ID_BUS property is necessary for creating by-id symlinks.
---

diff --git a/rules.d/60-serial.rules b/rules.d/60-serial.rules
index 2c1488e930a..a0e66323a9b 100644
--- a/rules.d/60-serial.rules
+++ b/rules.d/60-serial.rules
@@ -17,6 +17,7 @@ IMPORT{builtin}="path_id"
 ENV{ID_PATH}=="?*", ENV{.ID_PORT}=="", SYMLINK+="serial/by-path/$env{ID_PATH}"
 ENV{ID_PATH}=="?*", ENV{.ID_PORT}=="?*", SYMLINK+="serial/by-path/$env{ID_PATH}-port$env{.ID_PORT}"
 
+ENV{ID_BUS}=="", GOTO="serial_end"
 ENV{ID_SERIAL}=="", GOTO="serial_end"
 ENV{ID_USB_INTERFACE_NUM}=="", GOTO="serial_end"
 ENV{.ID_PORT}=="", SYMLINK+="serial/by-id/$env{ID_BUS}-$env{ID_SERIAL}-if$env{ID_USB_INTERFACE_NUM}"