manager: make Bluetooth rfcomm ports work again

At some point rfcomm serial ports stopped having parents in sysfs,
so checks to get the physical device fail because the rfcomm port
is /sys/devices/virtual/rfcommX and has no parents.  So we have
to fall back on checking the interface name.

1 files changed, 7 insertions, 0 deletions

diff --git a/src/mm-device.c b/src/mm-device.c
index d2ca4de4..0d65d19b 100644
--- a/src/mm-device.c
+++ b/src/mm-device.c
@@ -232,6 +232,7 @@ const gchar *
 mm_device_utils_get_port_driver (GUdevDevice *udev_port)
 {
     const gchar *driver, *subsys;
+    const char *name = g_udev_device_get_name (udev_port);
 
     driver = g_udev_device_get_driver (udev_port);
     if (!driver) {
@@ -254,6 +255,12 @@ mm_device_utils_get_port_driver (GUdevDevice *udev_port)
             g_object_unref (parent);
     }
 
+    /* Newer kernels don't set up the rfcomm port parent in sysfs,
+     * so we must infer it from the device name.
+     */
+    if (!driver && strncmp (name, "rfcomm", 6) == 0)
+        driver = "bluetooth";
+
     return driver;
 }