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-rw-r--r--net/can/isotp.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/net/can/isotp.c b/net/can/isotp.c
index d1c6f206f4..25bac0fafc 100644
--- a/net/can/isotp.c
+++ b/net/can/isotp.c
@@ -381,8 +381,9 @@ static int isotp_rcv_fc(struct isotp_sock *so, struct canfd_frame *cf, int ae)
return 1;
}
- /* get communication parameters only from the first FC frame */
- if (so->tx.state == ISOTP_WAIT_FIRST_FC) {
+ /* get static/dynamic communication params from first/every FC frame */
+ if (so->tx.state == ISOTP_WAIT_FIRST_FC ||
+ so->opt.flags & CAN_ISOTP_DYN_FC_PARMS) {
so->txfc.bs = cf->data[ae + 1];
so->txfc.stmin = cf->data[ae + 2];