[alsa-devel] [PATCH] ASoC: dapm: Ignore isolated signal generators for power purposes

[Mark Brown]

A signal generator has no power control itself and so shouldn't cause a
power up of the device.

Signed-off-by: Mark Brown <broonie at opensource.wolfsonmicro.com>
---
 sound/soc/soc-dapm.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index ff9939c..15c0821 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -1435,9 +1435,13 @@ static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event)
 			/* Supplies and micbiases only bring the
 			 * context up to STANDBY as unless something
 			 * else is active and passing audio they
-			 * generally don't require full power.
+			 * generally don't require full power.  Signal
+			 * generators are virtual pins and have no
+			 * power impact themselves.
 			 */
 			switch (w->id) {
+			case snd_soc_dapm_siggen:
+				break;
 			case snd_soc_dapm_supply:
 			case snd_soc_dapm_regulator_supply:
 			case snd_soc_dapm_micbias:
-- 
1.7.9.rc1