can: update documentation wording error frames -> error messages

As Heinz-Juergen Oertel pointed out 'CAN error frames' are a already defined
term for the CAN protocol violation indication on the wire.

To avoid confusion with the error messages created by CAN drivers available
via CAN RAW sockets update the documentation and change the naming from
'error frames' to 'error messages' or 'error message frames'.

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

1 files changed, 5 insertions, 5 deletions

diff --git a/net/can/af_can.c b/net/can/af_can.c
index 0ce2ad0696da..6efcd37b4bd0 100644
--- a/net/can/af_can.c
+++ b/net/can/af_can.c
@@ -334,8 +334,8 @@ static struct dev_rcv_lists *find_dev_rcv_lists(struct net_device *dev)
  *  relevant bits for the filter.
  *
  *  The filter can be inverted (CAN_INV_FILTER bit set in can_id) or it can
- *  filter for error frames (CAN_ERR_FLAG bit set in mask). For error frames
- *  there is a special filterlist and a special rx path filter handling.
+ *  filter for error messages (CAN_ERR_FLAG bit set in mask). For error msg
+ *  frames there is a special filterlist and a special rx path filter handling.
  *
  * Return:
  *  Pointer to optimal filterlist for the given can_id/mask pair.
@@ -347,7 +347,7 @@ static struct hlist_head *find_rcv_list(canid_t *can_id, canid_t *mask,
 {
         canid_t inv = *can_id & CAN_INV_FILTER; /* save flag before masking */
 
-        /* filter for error frames in extra filterlist */
+        /* filter for error message frames in extra filterlist */
         if (*mask & CAN_ERR_FLAG) {
                 /* clear CAN_ERR_FLAG in filter entry */
                 *mask &= CAN_ERR_MASK;
@@ -408,7 +408,7 @@ static struct hlist_head *find_rcv_list(canid_t *can_id, canid_t *mask,
  *          <received_can_id> & mask == can_id & mask
  *
  *  The filter can be inverted (CAN_INV_FILTER bit set in can_id) or it can
- *  filter for error frames (CAN_ERR_FLAG bit set in mask).
+ *  filter for error message frames (CAN_ERR_FLAG bit set in mask).
  *
  *  The provided pointer to the sk_buff is guaranteed to be valid as long as
  *  the callback function is running. The callback function must *not* free
@@ -578,7 +578,7 @@ static int can_rcv_filter(struct dev_rcv_lists *d, struct sk_buff *skb)
                 return 0;
 
         if (can_id & CAN_ERR_FLAG) {
-                /* check for error frame entries only */
+                /* check for error message frame entries only */
                 hlist_for_each_entry_rcu(r, n, &d->rx[RX_ERR], list) {
                         if (can_id & r->mask) {
                                 deliver(skb, r);