[Patch v2 5/6] ASoC: snd_soc_dapm_get_pin_status: Match other contexts too

[Stephen Warren <swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>]

Not all widgets on a card are within the codec's DAPM context. Fix
snd_soc_dapm_get_pin_status to search all contexts when looking for a
widget.

This change is required when modifying tegra_wm8903 to use
snd_soc_card.widgets rather than calling snd_soc_dapm_new_controls; the
former adds the widgets to the card's DAPM context, whereas tegra_wm8903
uses the codec's DAPM context when calling snd_soc_dapm_new_controls.

By code inspection, I suspect this also applies to Samsung Speyside.

Signed-off-by: Stephen Warren <swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
---
 sound/soc/soc-dapm.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 2ee738c..4c868f9 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -2403,6 +2403,12 @@ int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm,
 			return w->connected;
 	}
 
+	/* Try again in other contexts */
+	list_for_each_entry(w, &dapm->card->widgets, list) {
+		if (!strcmp(w->name, pin))
+			return w->connected;
+	}
+
 	return 0;
 }
 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status);
-- 
1.7.1