The patch below does not apply to the 4.14-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From d788905f68fd4714c82936f6f7f1d3644d7ae7ef Mon Sep 17 00:00:00 2001
From: Oleksij Rempel o.rempel@pengutronix.de Date: Tue, 18 Sep 2018 11:40:41 +0200 Subject: [PATCH] can: flexcan: use can_rx_offload_queue_sorted() for flexcan_irq_bus_*()
Currently, in case of bus error, driver will generate error message and put in the tail of the message queue. To avoid confusions, this change should place the bus related messages in proper order.
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
diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c index 5923bd0ec118..75ce11395ee8 100644 --- a/drivers/net/can/flexcan.c +++ b/drivers/net/can/flexcan.c @@ -561,9 +561,13 @@ static netdev_tx_t flexcan_start_xmit(struct sk_buff *skb, struct net_device *de static void flexcan_irq_bus_err(struct net_device *dev, u32 reg_esr) { struct flexcan_priv *priv = netdev_priv(dev); + struct flexcan_regs __iomem *regs = priv->regs; struct sk_buff *skb; struct can_frame *cf; bool rx_errors = false, tx_errors = false; + u32 timestamp; + + timestamp = priv->read(®s->timer) << 16;
skb = alloc_can_err_skb(dev, &cf); if (unlikely(!skb)) @@ -610,17 +614,21 @@ static void flexcan_irq_bus_err(struct net_device *dev, u32 reg_esr) if (tx_errors) dev->stats.tx_errors++;
- can_rx_offload_queue_tail(&priv->offload, skb); + can_rx_offload_queue_sorted(&priv->offload, skb, timestamp); }
static void flexcan_irq_state(struct net_device *dev, u32 reg_esr) { struct flexcan_priv *priv = netdev_priv(dev); + struct flexcan_regs __iomem *regs = priv->regs; struct sk_buff *skb; struct can_frame *cf; enum can_state new_state, rx_state, tx_state; int flt; struct can_berr_counter bec; + u32 timestamp; + + timestamp = priv->read(®s->timer) << 16;
flt = reg_esr & FLEXCAN_ESR_FLT_CONF_MASK; if (likely(flt == FLEXCAN_ESR_FLT_CONF_ACTIVE)) { @@ -650,7 +658,7 @@ static void flexcan_irq_state(struct net_device *dev, u32 reg_esr) if (unlikely(new_state == CAN_STATE_BUS_OFF)) can_bus_off(dev);
- can_rx_offload_queue_tail(&priv->offload, skb); + can_rx_offload_queue_sorted(&priv->offload, skb, timestamp); }
static inline struct flexcan_priv *rx_offload_to_priv(struct can_rx_offload *offload)