[PATCH 3/6] net: can: flexcan: Unlock the MB unconditionally

[Pankaj Bansal <pankaj.bansal@xxxxxxx>]

Unlock the MB irrespective of reception method being FIFO or
timestamp based.
It is optional but recommended to unlock Mailbox as soon as
possible and make it available for reception.

Signed-off-by: Pankaj Bansal <pankaj.bansal@xxxxxxx>
---
 drivers/net/can/flexcan.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c
index 5053837cf2f3..755a761eef02 100644
--- a/drivers/net/can/flexcan.c
+++ b/drivers/net/can/flexcan.c
@@ -720,9 +720,13 @@ static unsigned int flexcan_mailbox_read(struct can_rx_offload *offload,
 			priv->write(BIT(n - 32), &regs->iflag2);
 	} else {
 		priv->write(FLEXCAN_IFLAG_RX_FIFO_AVAILABLE, &regs->iflag1);
-		priv->read(&regs->timer);
 	}
 
+	/* Read the Free Running Timer. It is optional but recommended to unlock
+	 * Mailbox as soon as possible and make it available for reception.
+	 */
+	priv->read(&regs->timer);
+
 	return 1;
 }
 
-- 
2.17.1

--
To unsubscribe from this list: send the line "unsubscribe linux-can" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html