On Thu, May 21, 2015 at 09:47:35AM +0200, Maxime Ripard wrote: > 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? whatever dma_cookie_status returns
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