[PATCH v5] sun4i-emac.c: add dma support

[Jakub Kicinski]

On Tue, 28 Dec 2021 19:42:04 +0800 conleylee at foxmail.com wrote:
> +static void free_emac_dma_req(struct emac_dma_req *req)

emac_free_dma_req

> +prepare_err:
> +	dma_unmap_single(db->dev, rxbuf, count, DMA_FROM_DEVICE);
> +    return ret;

incorrect whitespace here

> @@ -599,12 +721,25 @@ static void emac_rx(struct net_device *dev)
>  			if (!skb)
>  				continue;
>  			skb_reserve(skb, 2);
> -			rdptr = skb_put(skb, rxlen - 4);
>  
>  			/* Read received packet from RX SRAM */
>  			if (netif_msg_rx_status(db))
>  				dev_dbg(db->dev, "RxLen %x\n", rxlen);
>  
> +			rdptr = skb_put(skb, rxlen - 4);

no reason to move this line