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| author | Takashi Sakamoto <o-takashi@sakamocchi.jp> | 2014-04-25 15:44:53 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2014-05-26 14:21:56 +0200 |
| commit | c8de6dbbbb422030d3c174146b2137e69a528d69 (patch) | |
| tree | 2b803a0d5a5f84f87e5f61b8de5fe6413406519f /sound/firewire/cmp.c | |
| parent | ALSA: firewire-lib/dice/speakers: Add common PCM constraints for AMDTP streams (diff) | |
| download | linux-c8de6dbbbb422030d3c174146b2137e69a528d69.tar.xz linux-c8de6dbbbb422030d3c174146b2137e69a528d69.zip | |
ALSA: firewire-lib: Restrict calling flush_context_completion() when context exists
Currently, drivers can bring XRUN state for PCM substreams when error to
queue packets or detecting discontinuity of packet. The application may try to
recover this state by calling snd_pcm_prepare().
Depending on each driver, .prepare() includes restart streaming. Then there
is a state that PCM substreams are running but isochronous contexts are
stopped. In this case, when .pointer() is called, it refers to error pointer.
This commit is for a prevention of this bug.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/firewire/cmp.c')
0 files changed, 0 insertions, 0 deletions