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 <abrod...@synopsys.com>
Cc: Joe Hershberger <joe.hershber...@ni.com>
Cc: Vipin Kumar <vipin.ku...@st.com>
Cc: Stefan Roese <s...@denx.de>
Cc: Mischa Jonker <mjon...@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)
--
1.8.4.2
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