net: stmmac: xgmac: Add RBU handling in DMA interrupt

Add the handling of Receive Buffer Unavailable interrupt in the DMA handler of XGMAC cores. Signed-off-by: Jose Abreu <joabreu@synopsys.com> Signed-off-by: David S. Miller <davem@davemloft.net>
mariux64 · Sep 5, 2019 · 6338488 · 6338488
1 parent 9513321
commit 6338488
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
@@ -322,6 +322,10 @@ static int dwxgmac2_dma_interrupt(void __iomem *ioaddr,
 
 	/* ABNORMAL interrupts */
 	if (unlikely(intr_status & XGMAC_AIS)) {
+		if (unlikely(intr_status & XGMAC_RBU)) {
+			x->rx_buf_unav_irq++;
+			ret |= handle_rx;
+		}
 		if (unlikely(intr_status & XGMAC_TPS)) {
 			x->tx_process_stopped_irq++;
 			ret |= tx_hard_error;