[PATCH 5.4 08/48] can: usb: esd_usb2: esd_usb2_rx_event(): fix the interchange of the CAN RX and TX error counters

From: Greg Kroah-Hartman
Date: Wed Sep 01 2021 - 08:34:39 EST


From: Stefan Mätje <stefan.maetje@xxxxxx>

commit 044012b52029204900af9e4230263418427f4ba4 upstream.

This patch fixes the interchanged fetch of the CAN RX and TX error
counters from the ESD_EV_CAN_ERROR_EXT message. The RX error counter
is really in struct rx_msg::data[2] and the TX error counter is in
struct rx_msg::data[3].

Fixes: 96d8e90382dc ("can: Add driver for esd CAN-USB/2 device")
Link: https://lore.kernel.org/r/20210825215227.4947-2-stefan.maetje@xxxxxx
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Stefan Mätje <stefan.maetje@xxxxxx>
Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/can/usb/esd_usb2.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/net/can/usb/esd_usb2.c
+++ b/drivers/net/can/usb/esd_usb2.c
@@ -224,8 +224,8 @@ static void esd_usb2_rx_event(struct esd
if (id == ESD_EV_CAN_ERROR_EXT) {
u8 state = msg->msg.rx.data[0];
u8 ecc = msg->msg.rx.data[1];
- u8 txerr = msg->msg.rx.data[2];
- u8 rxerr = msg->msg.rx.data[3];
+ u8 rxerr = msg->msg.rx.data[2];
+ u8 txerr = msg->msg.rx.data[3];

skb = alloc_can_err_skb(priv->netdev, &cf);
if (skb == NULL) {