Driver "init" function might be called multiple times. On every "init" Tx/Rx buffer descriptors are initialized: "descs_init" -> "{tx|rx}_descs_init".

In its turn those init functions set MAC's "{tx|rx}desclistaddr" to point on the first buffer descriptor in the list.

So CPU to start operation from the first buffer descriptor as well after every "init" we have to reset "{tx|rx}_currdescnum".

Signed-off-by: Alexey Brodkin abrodkin@synopsys.com

Cc: Joe Hershberger joe.hershberger@ni.com Cc: Vipin Kumar vipin.kumar@st.com Cc: Stefan Roese sr@denx.de Cc: Mischa Jonker mjonker@synopsys.com --- drivers/net/designware.c | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/drivers/net/designware.c b/drivers/net/designware.c index 53a95bf..d1cc25b 100644 --- a/drivers/net/designware.c +++ b/drivers/net/designware.c @@ -57,6 +57,7 @@ static void tx_descs_init(struct eth_device *dev) sizeof(priv->tx_mac_descrtable));

writel((ulong)&desc_table_p[0], &dma_p->txdesclistaddr); + priv->tx_currdescnum = 0; }

static void rx_descs_init(struct eth_device *dev) @@ -98,6 +99,7 @@ static void rx_descs_init(struct eth_device *dev) sizeof(priv->rx_mac_descrtable));

writel((ulong)&desc_table_p[0], &dma_p->rxdesclistaddr); + priv->rx_currdescnum = 0; }

static void descs_init(struct eth_device *dev)