[PATCH 5.18 0491/1095] can: kvaser_usb_leaf: do not report txerr and rxerr during bus-off

Greg Kroah-Hartman
2022-08-15T21:20:12Z

From: Vincent Mailhol <mailhol.vincent@wanadoo.fr>

[ Upstream commit a57732084e06791d37ea1ea447cca46220737abd ]

During bus off, the error count is greater than 255 and can not fit in
a u8.

Fixes: 7259124eac7d1 ("can: kvaser_usb: Split driver into kvaser_usb_core.c and kvaser_usb_leaf.c")
Link: https://lore.kernel.org/all/20220719143550.3681-9-mailhol.vincent@wanadoo.fr
CC: Jimmy Assarsson <extja@kvaser.com>
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c b/drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c
index cc809ecd1e62..f551fde16a70 100644
--- a/drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c
+++ b/drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c
@@ -853,8 +853,10 @@ static void kvaser_usb_leaf_rx_error(const struct kvaser_usb *dev,
break;
}

- cf->data[6] = es->txerr;
- cf->data[7] = es->rxerr;
+ if (new_state != CAN_STATE_BUS_OFF) {
+ cf->data[6] = es->txerr;
+ cf->data[7] = es->rxerr;
+ }

netif_rx(skb);
}
--
2.35.1