can: flexcan: fix bus-off error state handling.

Making sure that the bus-off state gets passed to can_change_state().

Signed-off-by: Andri Yngvason <andri.yngvason@marel.com>
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c
index 80c46ad..ee944ae 100644 (file)
--- a/drivers/net/can/flexcan.c
+++ b/drivers/net/can/flexcan.c
@@ -592,13 +592,12 @@ static int flexcan_poll_state(struct net_device *dev, u32 reg_esr)
                rx_state = unlikely(reg_esr & FLEXCAN_ESR_RX_WRN) ?
                           CAN_STATE_ERROR_WARNING : CAN_STATE_ERROR_ACTIVE;
                new_state = max(tx_state, rx_state);
-       } else if (unlikely(flt == FLEXCAN_ESR_FLT_CONF_PASSIVE)) {
+       } else {
                __flexcan_get_berr_counter(dev, &bec);
-               new_state = CAN_STATE_ERROR_PASSIVE;
+               new_state = flt == FLEXCAN_ESR_FLT_CONF_PASSIVE ?
+                           CAN_STATE_ERROR_PASSIVE : CAN_STATE_BUS_OFF;
                rx_state = bec.rxerr >= bec.txerr ? new_state : 0;
                tx_state = bec.rxerr <= bec.txerr ? new_state : 0;
-       } else {
-               new_state = CAN_STATE_BUS_OFF;
        }
 
        /* state hasn't changed */