--- sound/pci/rme9652/hdspm.c~	2011-06-01 21:30:24.000000000 +0200
+++ sound/pci/rme9652/hdspm.c	2011-06-01 22:04:08.184946711 +0200
@@ -1619,7 +1619,7 @@
 	int n_pending;
 	int i;
 
-	spin_lock_irqsave (&hmidi->lock, flags);
+	spin_lock_irqsave (&hmidi->hdspm->lock, flags);
 	n_pending = snd_hdspm_midi_input_available (hmidi->hdspm, hmidi->id);
 	if (n_pending > 0) {
 		if (hmidi->input) {
@@ -1644,7 +1644,7 @@
 	hdspm_write(hmidi->hdspm, HDSPM_controlRegister,
 		    hmidi->hdspm->control_register);
 
-	spin_unlock_irqrestore (&hmidi->lock, flags);
+	spin_unlock_irqrestore (&hmidi->hdspm->lock, flags);
 	return snd_hdspm_midi_output_write (hmidi);
 }