Re: Use of start_frame in usbusx2yaudio.c

From: Alan Stern
Date: Wed May 12 2010 - 10:54:28 EST


On Tue, 11 May 2010, Sarah Sharp wrote:

> Are there any drivers in the kernel that set urb->start_frame on every
> URB?
>
> Could those drivers handle it if only the first URB they submitted to
> the host controller was scheduled for that frame ID, and all the rest of
> the URBs were scheduled ASAP?

BTW, urb->start_frame generally is ignored as an input parameter. Many
host controller drivers pay no attention to it. Unless someone has a
real reason, I think we are better off not using it.

Alan Stern

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