ASoC: dapm - Fix check for codec context in dapm_power_widgets().

Fixes a NULL pointer dereference in dapm_power_widgets() if the dapm context
has no codec.

Signed-off-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 3ad1f59..1f55ded 100644 (file)
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -1426,7 +1426,7 @@ static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event)
                        dapm->target_bias_level = SND_SOC_BIAS_ON;
                        break;
                case SND_SOC_DAPM_STREAM_STOP:
-                       if (dapm->codec->active)
+                       if (dapm->codec && dapm->codec->active)
                                dapm->target_bias_level = SND_SOC_BIAS_ON;
                        else
                                dapm->target_bias_level = SND_SOC_BIAS_STANDBY;