diff --git a/sound/pci/ens1370.c b/sound/pci/ens1370.c
index 52fae4a..fbf1124 100644
--- a/sound/pci/ens1370.c
+++ b/sound/pci/ens1370.c
@@ -1910,7 +1910,8 @@
 	outl(0, ES_REG(ensoniq, CONTROL));	/* switch everything off */
 	outl(0, ES_REG(ensoniq, SERIAL));	/* clear serial interface */
 #endif
-	synchronize_irq(ensoniq->irq);
+	if (ensoniq->irq >= 0)
+		synchronize_irq(ensoniq->irq);
 	pci_set_power_state(ensoniq->pci, 3);
       __hw_end:
 #ifdef CHIP1370