On Mon, Sep 21, 2020 at 02:38:46PM +0300, Peter Ujfalusi wrote: > Make sure that we call the dma_unmap_sg on the correct scatterlist on > completion with the correct sg_nents. > > We also should be calling dma_sync_sg_for_device() on the tx buffer before > giving it to the DMA and the dma_sync_sg_for_cpu() should be called on the > scatterlist we received the data back. You might want to look into using struct sg_table and the DMA mapping helpers using it to simplify this a bit.
