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

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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>

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Marc Kleine-Budde 2014-09-16 15:31:27 +02:00

parent 25e924450f

commit de5944883e

1 changed files with 3 additions and 0 deletions

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drivers/net/can/flexcan.c

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