can: ems_usb: fix endianess of CAN ID

The device expects the CAN ID in little endian format.

Signed-off-by: Gerhard Uttenthaler <uttenthaler@ems-wuensche.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

diff --git a/drivers/net/can/usb/ems_usb.c b/drivers/net/can/usb/ems_usb.c
index 9376f5e..481f539 100644 (file)
--- a/drivers/net/can/usb/ems_usb.c
+++ b/drivers/net/can/usb/ems_usb.c
@@ -123,7 +123,7 @@ MODULE_LICENSE("GPL v2");
  * CPC_MSG_TYPE_EXT_CAN_FRAME or CPC_MSG_TYPE_EXT_RTR_FRAME.
  */
 struct cpc_can_msg {
-       u32 id;
+       __le32 id;
        u8 length;
        u8 msg[8];
 };
@@ -765,7 +765,7 @@ static netdev_tx_t ems_usb_start_xmit(struct sk_buff *skb, struct net_device *ne
 
        msg = (struct ems_cpc_msg *)&buf[CPC_HEADER_SIZE];
 
-       msg->msg.can_msg.id = cf->can_id & CAN_ERR_MASK;
+       msg->msg.can_msg.id = cpu_to_le32(cf->can_id & CAN_ERR_MASK);
        msg->msg.can_msg.length = cf->can_dlc;
 
        if (cf->can_id & CAN_RTR_FLAG) {
@@ -783,9 +783,6 @@ static netdev_tx_t ems_usb_start_xmit(struct sk_buff *skb, struct net_device *ne
                msg->length = CPC_CAN_MSG_MIN_SIZE + cf->can_dlc;
        }
 
-       /* Respect byte order */
-       msg->msg.can_msg.id = cpu_to_le32(msg->msg.can_msg.id);
-
        for (i = 0; i < MAX_TX_URBS; i++) {
                if (dev->tx_contexts[i].echo_index == MAX_TX_URBS) {
                        context = &dev->tx_contexts[i];