On 28-09-18, 08:53, Andrea Merello wrote: > On Tue, Sep 18, 2018 at 6:25 PM Vinod <vkoul@xxxxxxxxxx> wrote: > > > @@ -964,7 +968,7 @@ static int xilinx_dma_calc_copysize(struct xilinx_dma_chan *chan, > > > int size, int done) > > > { > > > size_t copy = min_t(size_t, size - done, > > > - XILINX_DMA_MAX_TRANS_LEN); > > > + chan->xdev->max_buffer_len); > > > > hmm why not add max_buffer_len in patch 1 again, and then use default > > len as XILINX_DMA_MAX_TRANS_LEN and add multiple lengths here :) > > Sorry, I'm not getting your point. Could you please elaborate the "add > multiple lengths here" thing ? IIRC (sorry been travelling and vacation), add chan->xdev->max_buffer_len in patch 1 and initialize it to XILINX_DMA_MAX_TRANS_LEN. Then in subsequent patches update the length. -- ~Vinod