From 3db6154e44dba8626cd6e31e15bd29d1c3861ca8 Mon Sep 17 00:00:00 2001 From: Marc Kleine-Budde Date: Thu, 28 Sep 2023 10:05:17 +0200 Subject: [PATCH] can: at91_can: at91_irq_err_line(): send error counters with state change Since 3e5c291c7942 ("can: add CAN_ERR_CNT flag to notify availability of error counter") there is a dedicated flag to inform the user space, that there are CAN error counters in the CAN error frame. In case the device is not in bus off mode, send the error counters to user space and set CAN_ERR_CNT. Link: https://lore.kernel.org/all/20231005-at91_can-rx_offload-v2-25-9987d53600e0@pengutronix.de Signed-off-by: Marc Kleine-Budde --- drivers/net/can/at91_can.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/net/can/at91_can.c b/drivers/net/can/at91_can.c index a413589109b24..d5e1d1b2cdd1c 100644 --- a/drivers/net/can/at91_can.c +++ b/drivers/net/can/at91_can.c @@ -884,6 +884,11 @@ static void at91_irq_err_line(struct net_device *dev, const u32 reg_sr) if (unlikely(!skb)) return; + if (new_state != CAN_STATE_BUS_OFF) { + cf->can_id |= CAN_ERR_CNT; + cf->data[6] = bec.txerr; + cf->data[7] = bec.rxerr; + } netif_rx(skb); } -- 2.39.5