[Xen-devel] dma_map_single returns 0 on ARM

[Zoltan Kiss <zoltan.kiss@xxxxxxxxxx>]

Hi,

I'm trying to fire up the Ethernet port of a Hisilicon D01 board, and it 
fails when it wants to map the buffers to the device:
                phys = dma_map_single(&ndev->dev, priv->rx_buf[i],
                                RX_BUF_SIZE, DMA_FROM_DEVICE);

This returns 0, while running on bare metal it works. Does anyone has an 
advice where should I look?
Regards,

Zoltan

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