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

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Date:   Tue, 28 Dec 2021 16:48:17 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     conleylee@...mail.com
Cc:     davem@...emloft.net, mripard@...nel.org, wens@...e.org,
        netdev@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5] sun4i-emac.c: add dma support

On Tue, 28 Dec 2021 19:42:04 +0800 conleylee@...mail.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