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| author | Tzung-Bi Shih <tzungbi@google.com> | 2018-11-14 17:06:13 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2018-11-14 14:26:00 -0800 |
| commit | 882eab6c28d23a970ae73b7eb831b169a672d456 (patch) | |
| tree | d55876fa0887424249cf38738144ca9bd8cd080c | |
| parent | 76836fd354922ebe4798a64fda01f8dc6a8b0984 (diff) | |
| download | linux-stable-882eab6c28d23a970ae73b7eb831b169a672d456.tar.gz linux-stable-882eab6c28d23a970ae73b7eb831b169a672d456.tar.bz2 linux-stable-882eab6c28d23a970ae73b7eb831b169a672d456.zip | |
ASoC: dapm: Recalculate audio map forcely when card instantiated
Audio map are possible in wrong state before card->instantiated has
been set to true. Imaging the following examples:
time 1: at the beginning
in:-1 in:-1 in:-1 in:-1
out:-1 out:-1 out:-1 out:-1
SIGGEN A B Spk
time 2: after someone called snd_soc_dapm_new_widgets()
(e.g. create_fill_widget_route_map() in sound/soc/codecs/hdac_hdmi.c)
in:1 in:0 in:0 in:0
out:0 out:0 out:0 out:1
SIGGEN A B Spk
time 3: routes added
in:1 in:0 in:0 in:0
out:0 out:0 out:0 out:1
SIGGEN -----> A -----> B ---> Spk
In the end, the path should be powered on but it did not. At time 3,
"in" of SIGGEN and "out" of Spk did not propagate to their neighbors
because snd_soc_dapm_add_path() will not invalidate the paths if
the card has not instantiated (i.e. card->instantiated is false).
To correct the state of audio map, recalculate the whole map forcely.
Signed-off-by: Tzung-Bi Shih <tzungbi@google.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
| -rw-r--r-- | sound/soc/soc-core.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 6ddcf12bc030..b29d0f65611e 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -2131,6 +2131,7 @@ static int snd_soc_instantiate_card(struct snd_soc_card *card) } card->instantiated = 1; + dapm_mark_endpoints_dirty(card); snd_soc_dapm_sync(&card->dapm); mutex_unlock(&card->mutex); mutex_unlock(&client_mutex); |