http://bugs.gentoo.org/245271

--- a/modprobe.c
+++ b/modprobe.c
@@ -1289,6 +1289,12 @@
 	DIR *dir;
 	int ret = 0;
 
+	/* Ignore hidden dirs.  This allows people to maintain things with
+	 * SCMs like .svn/ or .git/ or ...
+	 */
+	if ((strncmp(filename, "/etc/modprobe.d/.", 17) == 0) || (strncmp(filename, "/etc/modules.d/.", 16) == 0))
+		return 1;
+
 	/* Reiser4 has file/directory duality: treat it as both. */
 	dir = opendir(filename);
 	if (dir) {