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authorOleksij Rempel <o.rempel@pengutronix.de>2018-09-18 11:40:39 +0200
committerMarc Kleine-Budde <mkl@pengutronix.de>2018-11-09 17:33:32 +0100
commited72bc8bcb9277061e753faf300b20f97323761c (patch)
tree6442973934e41d4cea8c4b03820c6890aa9e71d6 /drivers/net/can
parent55059f2b7f868cd43b3ad30e28e18347e1b46ace (diff)
downloadlinux-ed72bc8bcb9277061e753faf300b20f97323761c.tar.bz2
can: flexcan: handle tx-complete CAN frames via rx-offload infrastructure
Current flexcan driver will put TX-ECHO in regular unsorted way, in this case TX-ECHO can come after the response to the same TXed message. In some cases, for example for J1939 stack, things will break. This patch is using new rx-offload API to put the messages just in the right place. Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Cc: linux-stable <stable@vger.kernel.org> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'drivers/net/can')
-rw-r--r--drivers/net/can/flexcan.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c
index 68b46395c580..41a175f80c4b 100644
--- a/drivers/net/can/flexcan.c
+++ b/drivers/net/can/flexcan.c
@@ -787,8 +787,11 @@ static irqreturn_t flexcan_irq(int irq, void *dev_id)
/* transmission complete interrupt */
if (reg_iflag2 & FLEXCAN_IFLAG_MB(FLEXCAN_TX_MB)) {
+ u32 reg_ctrl = priv->read(&regs->mb[FLEXCAN_TX_MB].can_ctrl);
+
handled = IRQ_HANDLED;
- stats->tx_bytes += can_get_echo_skb(dev, 0);
+ stats->tx_bytes += can_rx_offload_get_echo_skb(&priv->offload,
+ 0, reg_ctrl << 16);
stats->tx_packets++;
can_led_event(dev, CAN_LED_EVENT_TX);