[alsa-devel] [PATCH 0/5] RFC for snd-usb: rework usb endpoint logic
zonque at gmail.com
Mon Oct 31 13:10:25 CET 2011
It's been a while since the last round of patches for this topic, so
here is a new version.
In contrast to earlier versions, I did another bunch of cleanips and
can now use input and output simultaniously.
The patches that follow are structured in a way that should make
reviews easier, as they first implement a new streaming model while
leaving the old one working, and then switch to it in a separate
patch. This way, the series is also fully bisectable.
The problems that remain is a regression in handling data streams
with feedback endpoints in full duplex mode and a hard lockup when
changing audio parameters while two streams are running. I guess the
latter is caused by missing locking.
I didn't sign-off the patches on purpose, as I would really like to
get them reviewed before they go in. Can people have a look and state
whether the whole idea is at all sane?
Thanks a lot,
Daniel Mack (5):
ALSA: snd-usb: implement new endpoint streaming model
ALSA: snd-usb: switch over to new endpoint streaming logic
ALSA: snd-usb: remove old streaming logic
ALSA: snd-usb: set MAX_URBS to 16
ALSA: snd-usb: add support for implicit feedback
sound/usb/card.c | 6 +-
sound/usb/card.h | 56 ++-
sound/usb/endpoint.c | 1347 ++++++++++++++++++++++++--------------------------
sound/usb/endpoint.h | 31 +-
sound/usb/pcm.c | 412 +++++++++++++---
sound/usb/stream.c | 31 +-
sound/usb/usbaudio.h | 1 +
7 files changed, 1081 insertions(+), 803 deletions(-)
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