Use the strrchr() function instead of the deprecated rindex()
function.

--- mii-diag-2.11.orig/mii-diag.c.orig	2008-06-25 11:08:52.000000000 +1000
+++ mii-diag-2.11.orig/mii-diag.c	2005-03-27 03:56:33.000000000 +1000
@@ -174,7 +174,7 @@
 {
 	int c, errflag = 0;
 	char **spp, *ifname;
-    char *progname = rindex(argv[0], '/') ? rindex(argv[0], '/')+1 : argv[0];
+    char *progname = strrchr(argv[0], '/') ? strrchr(argv[0], '/')+1 : argv[0];
 
 	while ((c = getopt_long(argc, argv, shortopts, longopts, 0)) != EOF)
 		switch (c) {
@@ -310,7 +310,7 @@
 					str = endstr+1;
 				else {
 					fprintf(stderr, "Invalid driver parameter '%s'.\n", str);
-					str = index(str, ',');
+					str = strchr(str, ',');
 				}
 			} else if (endstr[0] == ',') {
 				data32[i] = newval;