dmx: if request DMX fail don't change the button status

Xiangfu Liu · Xiangfu Liu · commit 567aca1bb1fc · 2011-12-06T18:25:35.000+08:00
Signed-off-by: Xiangfu Liu &lt;xiangfu@sharism.cc&gt;
diff --git a/src/gui/dmx.c b/src/gui/dmx.c
@@ -46,13 +46,14 @@ static void set_chain_mode(int chain)
 {
 	int fd;
 	
+	if(!resmgr_acquire("DMX settings", RESOURCE_DMX_OUT)) return;
+
 	chain_mode = chain;
 	if(chain)
 		mtk_cmd(appid, "b_chain.set(-state on)");
 	else
 		mtk_cmd(appid, "b_chain.set(-state off)");
 
-	if(!resmgr_acquire("DMX settings", RESOURCE_DMX_OUT)) return;
 	fd = open("/dev/dmx_out", O_RDWR);
 	if(fd == -1) {
 		resmgr_release(RESOURCE_DMX_OUT);
