[PATCH 02/11] ALSA: vsnd: Implement Xen bus state handling

From: Oleksandr Andrushchenko Initial handling for Xen bus states: implement Xen bus state machine for the front driver according to the state diagram and recovery flow from sound para-virtualized protocol: xen/interface/io/sndif.h. Signed-off-by: Oleksandr

[PATCH 02/11] ALSA: vsnd: Implement Xen bus state handling

From: Oleksandr Andrushchenko Initial handling for Xen bus states: implement Xen bus state machine for the front driver according to the state diagram and recovery flow from sound para-virtualized protocol: xen/interface/io/sndif.h. Signed-off-by: Oleksandr Andrushchenko ---