linux-kernel - [PATCH AUTOSEL 4.19 16/68] ASoC: Fail card instantiation if DAI format setup fails

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Date:   Tue, 13 Aug 2019 22:14:54 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Ricard Wanderlof <ricard.wanderlof@...s.com>,
        Ricard Wanderlof <ricardw@...s.com>,
        Mark Brown <broonie@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH AUTOSEL 4.19 16/68] ASoC: Fail card instantiation if DAI format setup fails

From: Ricard Wanderlof <ricard.wanderlof@...s.com>

[ Upstream commit 40aa5383e393d72f6aa3943a4e7b1aae25a1e43b ]

If the DAI format setup fails, there is no valid communication format
between CPU and CODEC, so fail card instantiation, rather than continue
with a card that will most likely not function properly.

Signed-off-by: Ricard Wanderlof <ricardw@...s.com>
Link: https://lore.kernel.org/r/alpine.DEB.2.20.1907241132350.6338@lnxricardw1.se.axis.com
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 sound/soc/soc-core.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 62aa320c20708..dafc3b7f8d723 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -1513,8 +1513,11 @@ static int soc_probe_link_dais(struct snd_soc_card *card,
 		}
 	}
 
-	if (dai_link->dai_fmt)
-		snd_soc_runtime_set_dai_fmt(rtd, dai_link->dai_fmt);
+	if (dai_link->dai_fmt) {
+		ret = snd_soc_runtime_set_dai_fmt(rtd, dai_link->dai_fmt);
+		if (ret)
+			return ret;
+	}
 
 	ret = soc_post_component_init(rtd, dai_link->name);
 	if (ret)
-- 
2.20.1