ASoC: soc-pcm: fixup dpcm_prune_paths() loop continue

Commit Message

Kuninori Morimoto Oct. 9, 2019, 4:15 a.m. UTC

From: Kuninori Morimoto <[e-mail]>

dpcm_prune_paths() is checking widget at 2 parts.
(A) is for CPU, (B) is for Codec.
If we focus to (A) part, continue at (a) is for (1) loop. But,
if we focus to (B) part, continue at (b) is for (2) loop, not for (1).
This is bug.
This patch fixup this issue.

	static int dpcm_prune_paths(...)
	{
		...
   (1)		for_each_dpcm_be(fe, stream, dpcm) {
			...

 ^			widget = dai_get_widget(...);
 |
(A)			if (widget && widget_in_list(...))
 | (a)				continue;
 v
 ^ (2)			for_each_rtd_codec_dai(...) {
 |				widget = dai_get_widget(...);
(B)
 |				if (widget && widget_in_list(...))
 v (b)					continue;
			}
			...

Fixes: 2e5894d73789 ("ASoC: pcm: Add support for DAI multicodec")
Signed-off-by: Kuninori Morimoto <[e-mail]>
---
 sound/soc/soc-pcm.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

Patch

diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index 6706b91..5d973ac 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -1443,6 +1443,7 @@  static int dpcm_prune_paths(struct snd_soc_pcm_runtime *fe, int stream,
 	struct snd_soc_dapm_widget *widget;
 	struct snd_soc_dai *dai;
 	int prune = 0;
+	int do_prune;
 
 	/* Destroy any old FE <--> BE connections */
 	for_each_dpcm_be(fe, stream, dpcm) {
@@ -1456,13 +1457,16 @@  static int dpcm_prune_paths(struct snd_soc_pcm_runtime *fe, int stream,
 			continue;
 
 		/* is there a valid CODEC DAI widget for this BE */
+		do_prune = 1;
 		for_each_rtd_codec_dai(dpcm->be, i, dai) {
 			widget = dai_get_widget(dai, stream);
 
 			/* prune the BE if it's no longer in our active list */
 			if (widget && widget_in_list(list, widget))
-				continue;
+				do_prune = 0;
 		}
+		if (!do_prune)
+			continue;
 
 		dev_dbg(fe->dev, "ASoC: pruning %s BE %s for %s\n",
 			stream ? "capture" : "playback",