Hi, this is a patch set to cover a corner-case bug that happens with the USB-audio implicit feedback mode. When XRUN happens in the implicit fb full-duplex streams, the driver may get EPIPE error at prepare but re-issuing fails again. The essential fix is the 3rd patch but the former two are covering other corner cases I spotted (only theoretical). Takashi === Takashi Iwai (3): ALSA: pcm: Set missing stop_operating flag at undoing trigger start ALSA: pcm: Handle XRUN at trigger START ALSA: usb-audio: Workaround for XRUN at prepare sound/core/pcm_native.c | 12 ++++++++++-- sound/usb/pcm.c | 13 +++++++++++-- 2 files changed, 21 insertions(+), 4 deletions(-) -- 2.35.3
