Index: src/sys/dev/sound/pci/csapcm.c
===================================================================
RCS file: /home/ncvs/src/sys/dev/sound/pci/csapcm.c,v
retrieving revision 1.34.2.1
diff -u -r1.34.2.1 csapcm.c
--- src/sys/dev/sound/pci/csapcm.c	30 Dec 2005 19:55:53 -0000	1.34.2.1
+++ src/sys/dev/sound/pci/csapcm.c	4 Apr 2006 14:59:49 -0000
@@ -722,6 +722,8 @@
 {
 	csa_res *resp;
 
+	KASSERT(csa != NULL, ("called with bogus resource structure"));
+
 	resp = &csa->res;
 	if (resp->irq != NULL) {
 		if (csa->ih)
@@ -741,10 +743,8 @@
 		bus_dma_tag_destroy(csa->parent_dmat);
 		csa->parent_dmat = NULL;
 	}
-	if (csa != NULL) {
-		free(csa, M_DEVBUF);
-		csa = NULL;
-	}
+
+	free(csa, M_DEVBUF);
 }
 
 static int