This is a note to let you know that I've just added the patch titled
can: usb_8dev: do not report txerr and rxerr during bus-off
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
can-usb_8dev-do-not-report-txerr-and-rxerr-during-bu.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit e5abd216d59da2c5058d34c2cee6f85d6706398a
Author: Vincent Mailhol <mailhol.vincent@xxxxxxxxxx>
Date: Tue Jul 19 23:35:47 2022 +0900
can: usb_8dev: do not report txerr and rxerr during bus-off
[ 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@xxxxxxxxxx
Signed-off-by: Vincent Mailhol <mailhol.vincent@xxxxxxxxxx>
Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/can/usb/usb_8dev.c b/drivers/net/can/usb/usb_8dev.c
index 232f45f722f0..5cb5be4dc941 100644
--- a/drivers/net/can/usb/usb_8dev.c
+++ b/drivers/net/can/usb/usb_8dev.c
@@ -453,9 +453,10 @@ 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;
