On Fri, Feb 19, 2010 at 3:26 PM, Guennadi Liakhovetski
<g.liakhovetski@xxxxxx> wrote:
> On Fri, 19 Feb 2010, Govindraj wrote:
>
>> > + chan = dma_request_channel(mask, filter, param);
>> > + dev_dbg(port->dev, "%s: RX: got channel %p\n", __func__, chan);
>>
>>
>> If dma channel allocation fails how this scenario will be handled,
>> There is an possibility of dma_request_channel returning -EBUSY,
>
> Really? How? I thought it could only return a pointer to a channel or a
> NULL? And if it fails, i.e., chan == NULL, the whole code just stays
> inactive and the driver falls back to normal PIO.
Sorry I missed this part:
if (s->chan_tx) {
if (s->chan_rx) {
> Thanks
> Guennadi
> ---
> Guennadi Liakhovetski, Ph.D.
> Freelance Open-Source Software Developer
> http://www.open-technology.de/
>
---
Regards,
Govindraj.R
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