diff --git a/sound/pci/ctxfi/ctatc.h b/sound/pci/ctxfi/ctatc.h
index b86d12c..a3f9b1b 100644
--- a/sound/pci/ctxfi/ctatc.h
+++ b/sound/pci/ctxfi/ctatc.h
@@ -59,16 +59,15 @@
 };
 
 struct ct_atc;
+struct ct_timer;
+struct ct_timer_instance;
 
 /* alsa pcm stream descriptor */
 struct ct_atc_pcm {
 	struct snd_pcm_substream *substream;
 	void (*interrupt)(struct ct_atc_pcm *apcm);
+	struct ct_timer_instance *timer;
 	unsigned int started:1;
-	unsigned int stop_timer:1;
-	struct timer_list timer;
-	spinlock_t timer_lock;
-	unsigned int position;
 
 	/* Only mono and interleaved modes are supported now. */
 	struct ct_vm_block *vm_block;
@@ -144,6 +143,8 @@
 	unsigned char n_src;
 	unsigned char n_srcimp;
 	unsigned char n_pcm;
+
+	struct ct_timer *timer;
 };