Now for dwmac-loongson {tx,rx}_fifo_size are uninitialised, which means
zero. This means dwmac-loongson doesn't support changing MTU, so set the
correct tx_fifo_size and rx_fifo_size for it (16KB multiplied by channel
counts).
Note: the Fixes tag is not exactly right, but it is a key commit of the
dwmac-loongson series.
Cc: stable@xxxxxxxxxxxxxxx
Fixes: ad72f783de06827a1f ("net: stmmac: Add multi-channel support")
Signed-off-by: Chong Qiao <qiaochong@xxxxxxxxxxx>
Signed-off-by: Huacai Chen <chenhuacai@xxxxxxxxxxx>
---
drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
index bfe6e2d631bd..79acdf38c525 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
@@ -574,6 +574,9 @@ static int loongson_dwmac_probe(struct pci_dev *pdev, const struct pci_device_id
if (ret)
goto err_disable_device;
+ plat->tx_fifo_size = SZ_16K * plat->tx_queues_to_use;
+ plat->rx_fifo_size = SZ_16K * plat->rx_queues_to_use;
+
if (dev_of_node(&pdev->dev))
ret = loongson_dwmac_dt_config(pdev, plat, &res);
else
--
2.47.1
