diff options
| -rw-r--r-- | drivers/net/can/usb/esd_usb.c | 35 |
1 files changed, 20 insertions, 15 deletions
diff --git a/drivers/net/can/usb/esd_usb.c b/drivers/net/can/usb/esd_usb.c index e78bb468115a..d33bac3a6c10 100644 --- a/drivers/net/can/usb/esd_usb.c +++ b/drivers/net/can/usb/esd_usb.c @@ -237,14 +237,23 @@ static void esd_usb_rx_event(struct esd_usb_net_priv *priv, if (id == ESD_EV_CAN_ERROR_EXT) { u8 state = msg->rx.ev_can_err_ext.status; u8 ecc = msg->rx.ev_can_err_ext.ecc; - u8 rxerr = msg->rx.ev_can_err_ext.rec; - u8 txerr = msg->rx.ev_can_err_ext.tec; + + priv->bec.rxerr = msg->rx.ev_can_err_ext.rec; + priv->bec.txerr = msg->rx.ev_can_err_ext.tec; netdev_dbg(priv->netdev, "CAN_ERR_EV_EXT: dlc=%#02x state=%02x ecc=%02x rec=%02x tec=%02x\n", - msg->rx.dlc, state, ecc, rxerr, txerr); + msg->rx.dlc, state, ecc, + priv->bec.rxerr, priv->bec.txerr); + + /* if berr-reporting is off, only pass through on state change ... */ + if (!(priv->can.ctrlmode & CAN_CTRLMODE_BERR_REPORTING) && + state == priv->old_state) + return; skb = alloc_can_err_skb(priv->netdev, &cf); + if (!skb) + stats->rx_dropped++; if (state != priv->old_state) { enum can_state tx_state, rx_state; @@ -265,14 +274,14 @@ static void esd_usb_rx_event(struct esd_usb_net_priv *priv, break; default: new_state = CAN_STATE_ERROR_ACTIVE; - txerr = 0; - rxerr = 0; + priv->bec.txerr = 0; + priv->bec.rxerr = 0; break; } if (new_state != priv->can.state) { - tx_state = (txerr >= rxerr) ? new_state : 0; - rx_state = (txerr <= rxerr) ? new_state : 0; + tx_state = (priv->bec.txerr >= priv->bec.rxerr) ? new_state : 0; + rx_state = (priv->bec.txerr <= priv->bec.rxerr) ? new_state : 0; can_change_state(priv->netdev, cf, tx_state, rx_state); } @@ -304,17 +313,12 @@ static void esd_usb_rx_event(struct esd_usb_net_priv *priv, cf->data[3] = ecc & SJA1000_ECC_SEG; } - priv->bec.txerr = txerr; - priv->bec.rxerr = rxerr; - if (skb) { cf->can_id |= CAN_ERR_CNT; - cf->data[6] = txerr; - cf->data[7] = rxerr; + cf->data[6] = priv->bec.txerr; + cf->data[7] = priv->bec.rxerr; netif_rx(skb); - } else { - stats->rx_dropped++; } } } @@ -1016,7 +1020,8 @@ static int esd_usb_probe_one_net(struct usb_interface *intf, int index) priv->can.state = CAN_STATE_STOPPED; priv->can.ctrlmode_supported = CAN_CTRLMODE_LISTENONLY | - CAN_CTRLMODE_CC_LEN8_DLC; + CAN_CTRLMODE_CC_LEN8_DLC | + CAN_CTRLMODE_BERR_REPORTING; if (le16_to_cpu(dev->udev->descriptor.idProduct) == USB_CANUSBM_PRODUCT_ID) |