}
stats->rx_packets++;
- /* acknowledge rx fifo 0 */
- m_can_write(cdev, M_CAN_RXF0A, fgi);
-
timestamp = FIELD_GET(RX_BUF_RXTS_MASK, fifo_header.dlc) << 16;
m_can_receive_skb(cdev, skb, timestamp);
u32 rxfs;
u32 rx_count;
u32 fgi;
+ int ack_fgi = -1;
int i;
- int err;
+ int err = 0;
rxfs = m_can_read(cdev, M_CAN_RXF0S);
if (!(rxfs & RXFS_FFL_MASK)) {
for (i = 0; i < rx_count && quota > 0; ++i) {
err = m_can_read_fifo(dev, fgi);
if (err)
- return err;
+ break;
quota--;
pkts++;
+ ack_fgi = fgi;
fgi = (++fgi >= cdev->mcfg[MRAM_RXF0].num ? 0 : fgi);
}
+ if (ack_fgi != -1)
+ m_can_write(cdev, M_CAN_RXF0A, ack_fgi);
+
+ if (err)
+ return err;
+
return pkts;
}