On Wednesday 11 June 2014 10:12:48 Ludovic Desroches wrote:
> I have noticed that the filter function was missing in the RFC version.
> I had to add it since there are two xdma controllers in the system.
>
> static bool at_xdmac_filter(struct dma_chan *chan, void *slave)
>
> {
>
> struct device *dma_dev = (struct device *) slave;
>
>
>
> if (dma_dev == chan->device->dev)
>
> return true;
>
> else
>
> return false;
>
> }
Yes, looks good. Note that you can save the typecast and just do
struct device *dma_dev = slave;
if (chan->device->dev == dma_dev)
...
or shorter
if (chan->device->dev == slave)
...
or shortest:
return chan->device->dev == slave;
I find the shorter versions more readable here, but any of these
are correct.
Arnd
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