| From | Arnd Bergmann <> | Subject | Re: [RFC v02 04/15] dmaengine: edma: Add support for DMA filter mapping to slave devices | Date | Mon, 30 Nov 2015 15:11:49 +0100 |
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On Monday 30 November 2015 15:45:34 Peter Ujfalusi wrote: > @@ -2428,6 +2436,22 @@ bool edma_filter_fn(struct dma_chan *chan, void *param) > } > EXPORT_SYMBOL(edma_filter_fn); > > +static bool edma_filter_for_map(struct dma_chan *chan, void *param) > +{ > + bool match = false; > + > + if (chan->device->dev->driver == &edma_driver.driver) { > + struct edma_chan *echan = to_edma_chan(chan); > + unsigned ch_req = (unsigned)param; > + if (ch_req == echan->ch_num) { > + /* The channel is going to be used as HW synchronized */ > + echan->hw_triggered = true; > + match = true; > + } > + } > + return match; > +} > + > static int edma_init(void) >
I don't see the difference between edma_filter_fn and edma_filter_for_map. Why do you need both?
Arnd
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