diff options
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/can/ti_hecc.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/net/can/ti_hecc.c b/drivers/net/can/ti_hecc.c index 4c6d3ce0e8c4..31ad364a89bb 100644 --- a/drivers/net/can/ti_hecc.c +++ b/drivers/net/can/ti_hecc.c @@ -711,6 +711,23 @@ static irqreturn_t ti_hecc_interrupt(int irq, void *dev_id) can_bus_off(ndev); ti_hecc_change_state(ndev, rx_state, tx_state); } + } else if (unlikely(priv->can.state != CAN_STATE_ERROR_ACTIVE)) { + enum can_state new_state, tx_state, rx_state; + u32 rec = hecc_read(priv, HECC_CANREC); + u32 tec = hecc_read(priv, HECC_CANTEC); + + if (rec >= 128 || tec >= 128) + new_state = CAN_STATE_ERROR_PASSIVE; + else if (rec >= 96 || tec >= 96) + new_state = CAN_STATE_ERROR_WARNING; + else + new_state = CAN_STATE_ERROR_ACTIVE; + + if (new_state < priv->can.state) { + rx_state = rec >= tec ? new_state : 0; + tx_state = rec <= tec ? new_state : 0; + ti_hecc_change_state(ndev, rx_state, tx_state); + } } if (int_status & HECC_CANGIF_GMIF) { |