*
* We iterate from priv->tx_echo to priv->tx_next and check if the
* packet has been transmitted, echo it back to the CAN framework.
- * If we discover a not yet transmitted package, stop looking for more.
+ * If we discover a not yet transmitted packet, stop looking for more.
*/
static void c_can_do_tx(struct net_device *dev)
{
for (/* nix */; (priv->tx_next - priv->tx_echo) > 0; priv->tx_echo++) {
msg_obj_no = get_tx_echo_msg_obj(priv);
val = c_can_read_reg32(priv, &priv->regs->txrqst1);
- if (!(val & (1 << msg_obj_no))) {
+ if (!(val & (1 << (msg_obj_no - 1)))) {
can_get_echo_skb(dev,
msg_obj_no - C_CAN_MSG_OBJ_TX_FIRST);
stats->tx_bytes += priv->read_reg(priv,
& IF_MCONT_DLC_MASK;
stats->tx_packets++;
c_can_inval_msg_object(dev, 0, msg_obj_no);
+ } else {
+ break;
}
}
struct net_device *dev = napi->dev;
struct c_can_priv *priv = netdev_priv(dev);
- irqstatus = priv->read_reg(priv, &priv->regs->interrupt);
+ irqstatus = priv->irqstatus;
if (!irqstatus)
goto end;
static irqreturn_t c_can_isr(int irq, void *dev_id)
{
- u16 irqstatus;
struct net_device *dev = (struct net_device *)dev_id;
struct c_can_priv *priv = netdev_priv(dev);
- irqstatus = priv->read_reg(priv, &priv->regs->interrupt);
- if (!irqstatus)
+ priv->irqstatus = priv->read_reg(priv, &priv->regs->interrupt);
+ if (!priv->irqstatus)
return IRQ_NONE;
/* disable all interrupts and schedule the NAPI */