hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

can: ifi: Fix TX DLC configuration 

The TX DLC, the transmission length information, was not written
into the transmit configuration register. When using the CAN core
with different CAN controller, the receiving CAN controller will
receive only the ID part of the CAN frame, but no data at all.

This patch adds the TX DLC into the register to fix this issue.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Marc Kleine-Budde <mkl@pengutronix.de>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Oliver Hartkopp <socketcan@hartkopp.net>
Cc: Wolfgang Grandegger <wg@grandegger.com>
Reviewed-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Marek Vasut 2016-03-03 20:45:56 +01:00 committed by Marc Kleine-Budde
parent 99312c377f
commit f1deaee0c3
1 changed files with 6 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/net/can/ifi_canfd/ifi_canfd.c
View File

@ -749,8 +749,7 @@ static netdev_tx_t ifi_canfd_start_xmit(struct sk_buff *skb,
{
struct ifi_canfd_priv *priv = netdev_priv(ndev);
struct canfd_frame *cf = (struct canfd_frame *)skb->data;
u32 txst, txid;
u32 txdlc = 0;
u32 txst, txid, txdlc;
int i;
if (can_dropped_invalid_skb(ndev, skb))
@ -773,12 +772,11 @@ static netdev_tx_t ifi_canfd_start_xmit(struct sk_buff *skb,
txid = cf->can_id & CAN_SFF_MASK;
}
if (priv->can.ctrlmode & (CAN_CTRLMODE_FD | CAN_CTRLMODE_FD_NON_ISO)) {
if (can_is_canfd_skb(skb)) {
txdlc |= IFI_CANFD_TXFIFO_DLC_EDL;
if (cf->flags & CANFD_BRS)
txdlc |= IFI_CANFD_TXFIFO_DLC_BRS;
}
txdlc = can_len2dlc(cf->len);
if ((priv->can.ctrlmode & CAN_CTRLMODE_FD) && can_is_canfd_skb(skb)) {
txdlc |= IFI_CANFD_TXFIFO_DLC_EDL;
if (cf->flags & CANFD_BRS)
txdlc |= IFI_CANFD_TXFIFO_DLC_BRS;
}
if (cf->can_id & CAN_RTR_FLAG)