[PATCH 11/20] net: stmmac: Discard index usage in the dirty_rx init

[Serge Semin]

Indeed in accordance with the initialization loop logics the statement
"(i - priv->dma_rx_size)" will always equal to zero. Just initialize the
dirty_rx pointer with zero then.

Signed-off-by: Serge Semin <sergey.se...@baikalelectronics.ru>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c 
b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 8599ef6df52f..abe8db9965f4 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -1412,7 +1412,7 @@ static int init_dma_rx_desc_rings(struct net_device *dev, 
gfp_t flags)
                }
 
                rx_q->cur_rx = 0;
-               rx_q->dirty_rx = (unsigned int)(i - priv->dma_rx_size);
+               rx_q->dirty_rx = 0;
 
                /* Setup the chained descriptor addresses */
                if (priv->mode == STMMAC_CHAIN_MODE) {
-- 
2.29.2