linux-kernel - [PATCH] ASoC: dapm: Modify widget stream name according to prefix

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Date:	Mon, 11 May 2015 10:36:53 +0800
From:	Koro Chen <koro.chen@...iatek.com>
To:	<matthias.bgg@...il.com>, <broonie@...nel.org>, <perex@...ex.cz>,
	<tiwai@...e.de>
CC:	<srv_heupstream@...iatek.com>,
	<linux-mediatek@...ts.infradead.org>, <s.hauer@...gutronix.de>,
	<lgirdwood@...il.com>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <alsa-devel@...a-project.org>,
	Koro Chen <koro.chen@...iatek.com>
Subject: [PATCH] ASoC: dapm: Modify widget stream name according to prefix

When there is prefix specified, currently we will add this prefix in
widget->name, but not in widget->sname.
it causes failure at snd_soc_dapm_link_dai_widgets:

if (!w->sname || !strstr(w->sname, dai_w->name))

because dai_w->name has prefix added, but w->sname does not.
We should also add prefix for stream name

Signed-off-by: Koro Chen <koro.chen@...iatek.com>
---
 sound/soc/soc-dapm.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index defe0f0..158204d 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -3100,11 +3100,16 @@ snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
 	}
 
 	prefix = soc_dapm_prefix(dapm);
-	if (prefix)
+	if (prefix) {
 		w->name = kasprintf(GFP_KERNEL, "%s %s", prefix, widget->name);
-	else
+		if (widget->sname)
+			w->sname = kasprintf(GFP_KERNEL, "%s %s", prefix,
+					     widget->sname);
+	} else {
 		w->name = kasprintf(GFP_KERNEL, "%s", widget->name);
-
+		if (widget->sname)
+			w->sname = kasprintf(GFP_KERNEL, "%s", widget->sname);
+	}
 	if (w->name == NULL) {
 		kfree(w);
 		return NULL;
-- 
1.8.1.1.dirty

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