can: ti_hecc: release the mailbox a bit earlier

Release the mailbox after reading it, so it can be reused a bit earlier.
Since "can: rx-offload: continue on error" all pending message bits are
cleared directly, so remove clearing them in ti_hecc.

Suggested-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Jeroen Hofstee <jhofstee@victronenergy.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

diff --git a/drivers/net/can/ti_hecc.c b/drivers/net/can/ti_hecc.c
index d6a84f8ff863d3a8f282cd4ab7a5c470af9a48ac..6ea29126c60be03f59ce3b8b10c70f9d7bcfbeae 100644 (file)
--- a/drivers/net/can/ti_hecc.c
+++ b/drivers/net/can/ti_hecc.c
@@ -530,8 +530,9 @@ static unsigned int ti_hecc_mailbox_read(struct can_rx_offload *offload,
                                         u32 *timestamp, unsigned int mbxno)
 {
        struct ti_hecc_priv *priv = rx_offload_to_priv(offload);
-       u32 data;
+       u32 data, mbx_mask;
 
+       mbx_mask = BIT(mbxno);
        data = hecc_read_mbx(priv, mbxno, HECC_CANMID);
        if (data & HECC_CANMID_IDE)
                cf->can_id = (data & CAN_EFF_MASK) | CAN_EFF_FLAG;
@@ -551,6 +552,7 @@ static unsigned int ti_hecc_mailbox_read(struct can_rx_offload *offload,
        }
 
        *timestamp = hecc_read_stamp(priv, mbxno);
+       hecc_write(priv, HECC_CANRMP, mbx_mask);
 
        return 1;
 }
@@ -701,7 +703,6 @@ static irqreturn_t ti_hecc_interrupt(int irq, void *dev_id)
                while ((rx_pending = hecc_read(priv, HECC_CANRMP))) {
                        can_rx_offload_irq_offload_timestamp(&priv->offload,
                                                             rx_pending);
-                       hecc_write(priv, HECC_CANRMP, rx_pending);
                }
        }