Am Donnerstag, 8. November 2007 schrieb Clemens Ladisch:
Why not put it together with the other QUIRK_MIDI_ symbols?
break;
- case QUIRK_MIDI_US122L:
umidi->usb_protocol_ops = &snd_usbmidi_122l_ops;Aaargh! If you really want to do it this way, at least add a "/* fall through */" so that it's obvious that this is not a mistake.
Done here, will post again.
I'd like you to try the "ehci-hcd: complete iso urbs ASAP for number_of_packets != (n * 8) also" http://marc.info/?l=linux-usb-devel&m=119444869917392&w=2 with snd-usb-audio.
snd-usb-audio uses number_of_packets equalling multiples of 8 currently when transfering over USB 2.0, no? If so, with above patch that "multiples of 8"-thing could go away and snd-usb-audio could achieve up to 8 times less userspace-activation-jitter in low latency setups like 128 frames/period, 2 periods.
thanks, Karsten