diff options
| -rw-r--r-- | drivers/net/can/dev.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/net/can/dev.c b/drivers/net/can/dev.c index 4e20d82b799e..c7a260478749 100644 --- a/drivers/net/can/dev.c +++ b/drivers/net/can/dev.c @@ -642,6 +642,14 @@ int open_candev(struct net_device *dev) return -EINVAL; } + /* For CAN FD the data bitrate has to be >= the arbitration bitrate */ + if ((priv->ctrlmode & CAN_CTRLMODE_FD) && + (!priv->data_bittiming.bitrate || + (priv->data_bittiming.bitrate < priv->bittiming.bitrate))) { + netdev_err(dev, "incorrect/missing data bit-timing\n"); + return -EINVAL; + } + /* Switch carrier on if device was stopped while in bus-off state */ if (!netif_carrier_ok(dev)) netif_carrier_on(dev); |