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ems_usb: Fix byte order issues on big endian machines 

CPC-USB is using a ARM7 core with little endian byte order. The "id" field
in can_msg needs byte order conversion from/to CPU byte order.

Signed-off-by: Sebastian Haas <haas@ems-wuensche.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sebastian Haas 2009-11-04 05:48:33 +00:00 committed by David S. Miller
parent 4f2aa89cd2
commit 2b2072e902
1 changed files with 4 additions and 1 deletions
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5
drivers/net/can/usb/ems_usb.c
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@ -319,7 +319,7 @@ static void ems_usb_rx_can_msg(struct ems_usb *dev, struct ems_cpc_msg *msg)
cf = (struct can_frame *)skb_put(skb, sizeof(struct can_frame));
cf->can_id = msg->msg.can_msg.id;
cf->can_id = le32_to_cpu(msg->msg.can_msg.id);
cf->can_dlc = min_t(u8, msg->msg.can_msg.length, 8);
if (msg->type == CPC_MSG_TYPE_EXT_CAN_FRAME
@ -813,6 +813,9 @@ 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];