diff options
Diffstat (limited to 'drivers/net/can/at91_can.c')
| -rw-r--r-- | drivers/net/can/at91_can.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/net/can/at91_can.c b/drivers/net/can/at91_can.c index cbe3fce53e3..a2f29a38798 100644 --- a/drivers/net/can/at91_can.c +++ b/drivers/net/can/at91_can.c @@ -342,6 +342,9 @@ static netdev_tx_t at91_start_xmit(struct sk_buff *skb, struct net_device *dev) unsigned int mb, prio; u32 reg_mid, reg_mcr; + if (can_dropped_invalid_skb(dev, skb)) + return NETDEV_TX_OK; + mb = get_tx_next_mb(priv); prio = get_tx_next_prio(priv); @@ -474,7 +477,7 @@ static void at91_read_mb(struct net_device *dev, unsigned int mb, reg_msr = at91_read(priv, AT91_MSR(mb)); if (reg_msr & AT91_MSR_MRTR) cf->can_id |= CAN_RTR_FLAG; - cf->can_dlc = min_t(__u8, (reg_msr >> 16) & 0xf, 8); + cf->can_dlc = get_can_dlc((reg_msr >> 16) & 0xf); *(u32 *)(cf->data + 0) = at91_read(priv, AT91_MDL(mb)); *(u32 *)(cf->data + 4) = at91_read(priv, AT91_MDH(mb)); @@ -1037,7 +1040,7 @@ static int __init at91_can_probe(struct platform_device *pdev) res = platform_get_resource(pdev, IORESOURCE_MEM, 0); irq = platform_get_irq(pdev, 0); - if (!res || !irq) { + if (!res || irq <= 0) { err = -ENODEV; goto exit_put; } @@ -1070,6 +1073,7 @@ static int __init at91_can_probe(struct platform_device *pdev) priv->can.bittiming_const = &at91_bittiming_const; priv->can.do_set_bittiming = at91_set_bittiming; priv->can.do_set_mode = at91_set_mode; + priv->can.ctrlmode_supported = CAN_CTRLMODE_3_SAMPLES; priv->reg_base = addr; priv->dev = dev; priv->clk = clk; |