23 Apr
2013
23 Apr
'13
5:09 p.m.
Alan Stern wrote:
On Tue, 23 Apr 2013, Clemens Ladisch wrote:
Why is having a queue of two URB with one packet each suddenly not allowed?
It _is_ allowed when URB_ISO_ASAP is clear. I have never fully understood why the audio driver sets that flag. By setting it, you are telling the host controller driver that you are willing to give up reduced latency in order to avoid underruns.
This flag was needed to avoid having to set urb->start_frame.
With the changed queueing API, the audio driver needs to change too. I'll look into this ...
Regards, Clemens -- To unsubscribe from this list: send the line "unsubscribe alsa-devel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html