diff options
| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-10-04 22:43:31 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-10-05 11:22:30 +0100 |
| commit | f3bf3e456a8be9b359a8f4ff458ae1be4fc4c516 (patch) | |
| tree | d1800baf16a3fb020f19ab2fb34aeb3aa19901da /sound/soc/soc-dapm.c | |
| parent | 9b8a83b205bd07b06784028effd94515fe9278c3 (diff) | |
| download | lwn-f3bf3e456a8be9b359a8f4ff458ae1be4fc4c516.tar.gz lwn-f3bf3e456a8be9b359a8f4ff458ae1be4fc4c516.zip | |
ASoC: Don't mark the outputs of supplies as dirty on state changes
The whole point of supply widgets is that they aren't inputs to their
sinks so a state change in a supply should never affect the state of the
widget being supplied and we don't need to mark them as dirty.
Power Path Neighbour
Before: 69 727 905
After: 63 607 731
This is particularly useful where supplies affect large portions of the
chip (eg, a bandgap supplying the analogue sections).
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/soc-dapm.c')
| -rw-r--r-- | sound/soc/soc-dapm.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index c39146d435e2..cbca1ddb6619 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -1260,11 +1260,18 @@ static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power, path->connect); } } - list_for_each_entry(path, &w->sinks, list_source) { - if (path->sink) { - dapm_widget_set_peer_power(path->sink, power, - path->connect); + switch (w->id) { + case snd_soc_dapm_supply: + /* Supplies can't affect their outputs, only their inputs */ + break; + default: + list_for_each_entry(path, &w->sinks, list_source) { + if (path->sink) { + dapm_widget_set_peer_power(path->sink, power, + path->connect); + } } + break; } if (power) |