From: Vincent Mailhol <mailhol.vincent@wanadoo.fr> stable inclusion from stable-v5.10.137 commit f0ef21b73978495e060dc37ca2b134b5036c6d0e category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I60PLB Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=... -------------------------------- [ Upstream commit aebe8a2433cd090ccdc222861f44bddb75eb01de ] During bus off, the error count is greater than 255 and can not fit in a u8. Fixes: 0024d8ad1639 ("can: usb_8dev: Add support for USB2CAN interface from 8 devices") Link: https://lore.kernel.org/all/20220719143550.3681-10-mailhol.vincent@wanadoo.f... 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> Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com> Reviewed-by: Wei Li <liwei391@huawei.com> --- drivers/net/can/usb/usb_8dev.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/net/can/usb/usb_8dev.c b/drivers/net/can/usb/usb_8dev.c index 985e00aee4ee..885c54c6f81a 100644 --- a/drivers/net/can/usb/usb_8dev.c +++ b/drivers/net/can/usb/usb_8dev.c @@ -442,9 +442,10 @@ static void usb_8dev_rx_err_msg(struct usb_8dev_priv *priv, if (rx_errors) stats->rx_errors++; - - cf->data[6] = txerr; - cf->data[7] = rxerr; + if (priv->can.state != CAN_STATE_BUS_OFF) { + cf->data[6] = txerr; + cf->data[7] = rxerr; + } priv->bec.txerr = txerr; priv->bec.rxerr = rxerr; -- 2.20.1