> > [..]
> > > - if (rchan->mid_rid < 0 || !sg_len) {
> > > + if (rchan->mid_rid < 0 || !sg_len || !sg_dma_len(sgl)) {
> > > dev_warn(chan->device->dev,
> > > "%s: bad parameter: len=%d, id=%d\n",
> > > __func__, sg_len, rchan->mid_rid);
> >
> > Just wanted to share the WARN output proposed by Wolfram in
> > https://patchwork.kernel.org/patch/11012991/#22721733
> > in case the issue discussed in [1] is reproduced with this patch:
>
> I'm not such a big fan of WARN()...Well, if 'id' points indirectly to the driver, then I agree here that WARN might not be needed. Not as obvious, but probably good enough.
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