From 972bc48715450e61ae79c705b95ddabcc2b1bbc9 Mon Sep 17 00:00:00 2001
From: Matthias Vogelgesang <matthias.vogelgesang@kit.edu>
Date: Wed, 13 Aug 2014 14:16:17 +0200
Subject: Fix re-setting a unit on the same camera class

---
 src/uca-camera.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'src/uca-camera.c')

diff --git a/src/uca-camera.c b/src/uca-camera.c
index 8bb7201..27af765 100644
--- a/src/uca-camera.c
+++ b/src/uca-camera.c
@@ -135,8 +135,12 @@ struct _UcaCameraPrivate {
 static void
 uca_camera_set_property_unit (GParamSpec *pspec, UcaUnit unit)
 {
-    if (g_param_spec_get_qdata (pspec, UCA_UNIT_QUARK) != NULL)
-        g_warning ("::%s already has a unit", pspec->name);
+    UcaUnit old_unit;
+
+    old_unit = (UcaUnit) GPOINTER_TO_INT (g_param_spec_get_qdata (pspec, UCA_UNIT_QUARK));
+
+    if (old_unit != unit && old_unit != UCA_UNIT_NA)
+        g_warning ("::%s already has a different unit", pspec->name);
     else
         g_param_spec_set_qdata (pspec, UCA_UNIT_QUARK, GINT_TO_POINTER (unit));
 }
-- 
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