[PATCH net-next 08/10] net: stmmac: Update RX Tail Pointer to last free entry

[Jose Abreu]

Update the RX Tail Pointer to the last available SKB entry.

Signed-off-by: Jose Abreu <joab...@synopsys.com>
Cc: Joao Pinto <jpi...@synopsys.com>
Cc: David S. Miller <da...@davemloft.net>
Cc: Giuseppe Cavallaro <peppe.cavall...@st.com>
Cc: Alexandre Torgue <alexandre.tor...@st.com>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c 
b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 65ff2a2a15e4..0893af8b432d 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -3337,6 +3337,8 @@ static inline void stmmac_rx_refill(struct stmmac_priv 
*priv, u32 queue)
                entry = STMMAC_GET_ENTRY(entry, DMA_RX_SIZE);
        }
        rx_q->dirty_rx = entry;
+       rx_q->rx_tail_addr = rx_q->dma_rx_phy +
+                           (rx_q->dirty_rx * sizeof(struct dma_desc));
        stmmac_set_rx_tail_ptr(priv, priv->ioaddr, rx_q->rx_tail_addr, queue);
 }
 
-- 
2.7.4