On Fri, 2005-12-30 at 14:13 -0500, Dan Streetman wrote:
> On Thu, 29 Dec 2005, Lee Revell wrote:
>
> >How do I test them? Should this make USB audio work with
> >CONFIG_USB_BANDWIDTH?
>
> It won't have any effect on CONFIG_USB_BANDWIDTH, as the EHCI transaction
> translator scheudling code doesn't care about that config setting. This
> also won't have any effect on USB 2.0 devices (e.g. a highspeed Audio
> device).
>
> The updates will only help in the situation where there are multiple
> lowpseed or fullspeed devices with periodic endpoints, all connected to
> the same USB 2.0 (highspeed) hub. In that situation it's possible to
> "fill up" the USB 2.0 hub's transaction translator periodic schedule with
> only a few devices. The updates allow many more devices to fit in the
> TT's periodic schedule. The specific number of devices depends on how
> many periodic endpoints, those endpoint's poll rates, and their max packet
> sizes.
>
OK. For some reason I though that problem was fixed, I guess it was a
different issue. ALSA users previously reported that a full speed audio
device didn't work at all through a high speed hub at all but that it
was fixed a few months ago.
Lee
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
