On 01/02/2019 at 09:47, Christoph Hellwig wrote:
> The DMA API generally relies on a struct device to work properly, and
> only barely works without one for legacy reasons. Pass the easily
> available struct device from the platform_device to remedy this.
>
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Acked-by: Nicolas Ferre <nicolas.ferre@xxxxxxxxxxxxx>
> ---
> drivers/net/ethernet/cadence/macb_main.c | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c
> index 2b2882615e8b..61a27963f1d1 100644
> --- a/drivers/net/ethernet/cadence/macb_main.c
> +++ b/drivers/net/ethernet/cadence/macb_main.c
> @@ -3673,9 +3673,9 @@ static netdev_tx_t at91ether_start_xmit(struct sk_buff *skb,
> /* Store packet information (to free when Tx completed) */
> lp->skb = skb;
> lp->skb_length = skb->len;
> - lp->skb_physaddr = dma_map_single(NULL, skb->data, skb->len,
> - DMA_TO_DEVICE);
> - if (dma_mapping_error(NULL, lp->skb_physaddr)) {
> + lp->skb_physaddr = dma_map_single(&lp->pdev->dev, skb->data,
> + skb->len, DMA_TO_DEVICE);
> + if (dma_mapping_error(&lp->pdev->dev, lp->skb_physaddr)) {
> dev_kfree_skb_any(skb);
> dev->stats.tx_dropped++;
> netdev_err(dev, "%s: DMA mapping error\n", __func__);
> @@ -3765,7 +3765,7 @@ static irqreturn_t at91ether_interrupt(int irq, void *dev_id)
> if (lp->skb) {
> dev_kfree_skb_irq(lp->skb);
> lp->skb = NULL;
> - dma_unmap_single(NULL, lp->skb_physaddr,
> + dma_unmap_single(&lp->pdev->dev, lp->skb_physaddr,
> lp->skb_length, DMA_TO_DEVICE);
> dev->stats.tx_packets++;
> dev->stats.tx_bytes += lp->skb_length;
>
--
Nicolas Ferre
