diff -r 4e4d5ca6b8da -r fdda05e4e407 bin/chio/chio.c
--- a/bin/chio/chio.c	Mon Nov 02 18:57:34 2009 +0100
+++ b/bin/chio/chio.c	Sun Nov 08 09:58:32 2009 +0100
@@ -424,16 +424,13 @@
 
 /* ARGSUSED */
 static int
-do_params(const char *cname, int argc, char **argv)
+do_params(const char *cname, int argc, char **argv __unused)
 {
 	struct changer_params data;
 	int picker;
 
 	/* No arguments to this command. */
-
-	++argv; --argc;
-
-	if (argc) {
+	if (argc > 1) {
 		warnx("%s: no arguments expected", cname);
 		goto usage;
 	}
@@ -467,15 +464,12 @@
 
 /* ARGSUSED */
 static int
-do_getpicker(const char *cname, int argc, char **argv)
+do_getpicker(const char *cname, int argc, char **argv __unused)
 {
 	int picker;
 
 	/* No arguments to this command. */
-
-	++argv; --argc;
-
-	if (argc) {
+	if (argc > 1) {
 		warnx("%s: no arguments expected", cname);
 		goto usage;
 	}
@@ -966,7 +960,6 @@
 	} else {
 		element = parse_element_unit(*argv);
 	}
-	++argv; --argc;
 
 	/* Get the status */
 	ces = get_element_status((unsigned int)type, (unsigned int)element,
@@ -1072,10 +1065,10 @@
 
 	/* Read in the changer slots */
 	if (cp.cp_nslots > 0) {
+		(void) memset(&cesr, 0, sizeof(cesr));
 		cesr.cesr_element_type = CHET_ST;
-		cesr.cesr_element_base = 0;
 		cesr.cesr_element_count = cp.cp_nslots;
-		cesr.cesr_flags |= CESR_VOLTAGS;
+		cesr.cesr_flags = CESR_VOLTAGS;
 		cesr.cesr_element_status = ces;
 
 		if (ioctl(changer_fd, CHIOGSTATUS, (char *)&cesr) == -1) {
@@ -1087,12 +1080,10 @@
 
 	/* Read in the drive information */
 	if (cp.cp_ndrives > 0 ) {
-
 		(void) memset(&cesr, 0, sizeof(cesr));
 		cesr.cesr_element_type = CHET_DT;
-		cesr.cesr_element_base = 0;
 		cesr.cesr_element_count = cp.cp_ndrives;
-		cesr.cesr_flags |= CESR_VOLTAGS;
+		cesr.cesr_flags = CESR_VOLTAGS;
 		cesr.cesr_element_status = ces;
 
 		if (ioctl(changer_fd, CHIOGSTATUS, (char *)&cesr) == -1) {
@@ -1106,9 +1097,8 @@
 	if (cp.cp_nportals > 0 ) {
 		(void) memset(&cesr, 0, sizeof(cesr));
 		cesr.cesr_element_type = CHET_IE;
-		cesr.cesr_element_base = 0;
 		cesr.cesr_element_count = cp.cp_nportals;
-		cesr.cesr_flags |= CESR_VOLTAGS;
+		cesr.cesr_flags = CESR_VOLTAGS;
 		cesr.cesr_element_status = ces;
 
 		if (ioctl(changer_fd, CHIOGSTATUS, (char *)&cesr) == -1) {
@@ -1122,9 +1112,8 @@
 	if (cp.cp_npickers > 0) {
 		(void) memset(&cesr, 0, sizeof(cesr));
 		cesr.cesr_element_type = CHET_MT;
-		cesr.cesr_element_base = 0;
 		cesr.cesr_element_count = cp.cp_npickers;
-		cesr.cesr_flags |= CESR_VOLTAGS;
+		cesr.cesr_flags = CESR_VOLTAGS;
 		cesr.cesr_element_status = ces;
 
 		if (ioctl(changer_fd, CHIOGSTATUS, (char *)&cesr) == -1) {
--- chio.diff ends here ---