can-calc-bit-timing: add 66.66 MHz mscan refclock

[sojka/can-utils.git] / cangw.c

diff --git a/cangw.c b/cangw.c
index fbc230d4599e9a4532b14ac945bf37e0a6f829fa..18cc50cdb66fe2b6922fd784ac62771ee93e2e1c 100644 (file)
--- a/cangw.c
+++ b/cangw.c
@@ -1,7 +1,3 @@
-/*
- *  $Id$
- */
-
 /*
  * cangw.c - manage PF_CAN netlink gateway
  *
@@ -41,7 +37,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
  * DAMAGE.
  *
- * Send feedback to <socketcan-users@lists.berlios.de>
+ * Send feedback to <linux-can@vger.kernel.org>
  *
  */
 
@@ -669,6 +665,11 @@ int main(int argc, char **argv)
                exit(1);
        }
 
+       if (!modidx && (have_cs_crc8 || have_cs_xor)) {
+               printf("-c or -x can only be used in conjunction with -m\n");
+               exit(1);
+       }
+
        s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
 
        switch (cmd) {