[PATCH] net: stmmac: dwmac-loongson: Set correct {tx,rx}_fifo_size
Yanteng Si
si.yanteng at linux.dev
Wed Jan 22 06:49:41 PST 2025
在 1/21/25 17:37, Huacai Chen 写道:
> 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 at vger.kernel.org
> Fixes: ad72f783de06827a1f ("net: stmmac: Add multi-channel support")
> Signed-off-by: Chong Qiao <qiaochong at loongson.cn>
> Signed-off-by: Huacai Chen <chenhuacai at loongson.cn>
Acked-by: Yanteng Si <si.yanteng at linux.dev>
Thanks,
Yanteng
> ---
> 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
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