From: Paul Kocialkowski <contact@paulk.fr>
Date: Tue, 6 Jun 2017 15:27:30 +0000 (+0300)
Subject: sd-device: Try /sys/firmware for sysname to allow device-tree (#5837)
X-Git-Tag: v234~144
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=a918b6738a346516e1e89cd84b10d4ad1084372b;p=thirdparty%2Fsystemd.git

sd-device: Try /sys/firmware for sysname to allow device-tree (#5837)

This adds /sys/firmware lookup for sysname when creating a new device,
which allows device-tree properties lookup. This look-up can then be
used in udev rules, allowing device-tree-based model detection.
---

diff --git a/src/libsystemd/sd-device/sd-device.c b/src/libsystemd/sd-device/sd-device.c
index c56ae39c9fe..d65e716da56 100644
--- a/src/libsystemd/sd-device/sd-device.c
+++ b/src/libsystemd/sd-device/sd-device.c
@@ -324,6 +324,10 @@ _public_ int sd_device_new_from_subsystem_sysname(sd_device **ret, const char *s
         if (access(syspath, F_OK) >= 0)
                 return sd_device_new_from_syspath(ret, syspath);
 
+        syspath = strjoina("/sys/firmware/", subsystem, "/", sysname);
+        if (access(syspath, F_OK) >= 0)
+                return sd_device_new_from_syspath(ret, syspath);
+
         return -ENODEV;
 }