ASoC: Fix suspend with active audio streams

When we get a stream suspend event force the power down since otherwise
the stream would remain marked as active.  In future we'll probably want
to make this stream-specific and add an interface to make the power down
of other widgets optional in order to support leaving bypass paths
active while suspending the processor.

Cc: stable@kernel.org
Reported-by: Joonyoung Shim <jy0922.shim@samsung.com>
Tested-by: Joonyoung Shim <jy0922.shim@samsung.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 17 insertions, 3 deletions

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index d89f6dc00908..66d4c165f99b 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -973,9 +973,19 @@ static int dapm_power_widgets(struct snd_soc_codec *codec, int event)
                         if (!w->power_check)
                                 continue;
 
-                        power = w->power_check(w);
-                        if (power)
-                                sys_power = 1;
+                        /* If we're suspending then pull down all the 
+                         * power. */
+                        switch (event) {
+                        case SND_SOC_DAPM_STREAM_SUSPEND:
+                                power = 0;
+                                break;
+
+                        default:
+                                power = w->power_check(w);
+                                if (power)
+                                        sys_power = 1;
+                                break;
+                        }
 
                         if (w->power == power)
                                 continue;
@@ -999,8 +1009,12 @@ static int dapm_power_widgets(struct snd_soc_codec *codec, int event)
                 case SND_SOC_DAPM_STREAM_RESUME:
                         sys_power = 1;
                         break;
+                case SND_SOC_DAPM_STREAM_SUSPEND:
+                        sys_power = 0;
+                        break;
                 case SND_SOC_DAPM_STREAM_NOP:
                         sys_power = codec->bias_level != SND_SOC_BIAS_STANDBY;
+                        break;
                 default:
                         break;
                 }