From 4189708ad0cde8e211e38d27de943579772f8869 Mon Sep 17 00:00:00 2001
From: Tom Gundersen <teg@jklm.no>
Date: Mon, 1 Jun 2015 23:51:37 +0200
Subject: sd-device: get_subsystem - don't complain if a device does not have a
 subsystem

---
 src/libudev/libudev-device.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'src/libudev')

diff --git a/src/libudev/libudev-device.c b/src/libudev/libudev-device.c
index 893d72c19f..c27b01db96 100644
--- a/src/libudev/libudev-device.c
+++ b/src/libudev/libudev-device.c
@@ -178,7 +178,8 @@ _public_ const char *udev_device_get_subsystem(struct udev_device *udev_device)
         if (r < 0) {
                 errno = -r;
                 return NULL;
-        }
+        } else if (!subsystem)
+                errno = ENODATA;
 
         return subsystem;
 }
-- 
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