tree 921e40457958910f41baff7caf50157d5c1a11cd
parent 25e924450fcb23c11c07c95ea8964dd9f174652e
author Marc Kleine-Budde <mkl@pengutronix.de> 1410874287 +0200
committer Marc Kleine-Budde <mkl@pengutronix.de> 1411031727 +0200

can: flexcan: put TX mailbox into TX_INACTIVE mode after tx-complete

After sending a RTR frame the TX mailbox becomes a RX_EMPTY mailbox. To avoid
side effects when the RX-FIFO is full, this patch puts the TX mailbox into
TX_INACTIVE mode in the transmission complete interrupt handler. This, of
course, leaves a race window between the actual completion of the transmission
and the handling of tx-complete interrupt. However this is the best we can do
without busy polling the tx complete interrupt.

Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>