On Mon, May 18, 2015 at 02:16:14PM +0530, Vinod Koul wrote:
> > +static enum dma_status sun4i_dma_tx_status(struct dma_chan *chan,
> > + dma_cookie_t cookie,
> > + struct dma_tx_state *state)
> > +{
> > + struct sun4i_dma_vchan *vchan = to_sun4i_dma_vchan(chan);
> > + struct sun4i_dma_pchan *pchan = vchan->pchan;
> > + struct sun4i_dma_contract *contract;
> > + struct sun4i_dma_promise *promise;
> > + struct virt_dma_desc *vd;
> > + unsigned long flags;
> > + enum dma_status ret;
> > + size_t bytes = 0;
> > +
> > + ret = dma_cookie_status(chan, cookie, state);
> > + if (ret == DMA_COMPLETE)
> > + return ret;
>
> Pls check if state is valid before progressing ahead
Just one more question about this one. What should we return in the
case where state would be NULL ? DMA_ERROR?
Thanks,
Maxime
--
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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