From c87df56d28a6b51389b37a7bff71b7048afad801 Mon Sep 17 00:00:00 2001
From: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Date: Wed, 7 Apr 2021 11:20:27 +0200
Subject: [PATCH] ASoC: simple-card: fix possible uninitialized single_cpu
local variable
[ Upstream commit fa74c223b6fd78a5314b4c61b9abdbed3c2185b4 ]
The 'single_cpu' local variable is assigned by asoc_simple_parse_dai()
and later used in a asoc_simple_canonicalize_cpu() call, assuming the
entire function did not exit on errors.
However the first function returns 0 if passed device_node is NULL,
thus leaving the variable uninitialized and reporting success.
Addresses-Coverity: Uninitialized scalar variable
Fixes: 8f7f298a3337 ("ASoC: simple-card-utils: separate asoc_simple_card_parse_dai()")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Acked-by: Sameer Pujar <spujar@nvidia.com>
Link: https://lore.kernel.org/r/20210407092027.60769-1-krzysztof.kozlowski@canonical.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/soc/generic/audio-graph-card.c | 2 +-
sound/soc/generic/simple-card.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/sound/soc/generic/audio-graph-card.c b/sound/soc/generic/audio-graph-card.c
index 97b4f5480a31cb..0c640308ed80b0 100644
--- a/sound/soc/generic/audio-graph-card.c
+++ b/sound/soc/generic/audio-graph-card.c
@@ -340,7 +340,7 @@ static int graph_dai_link_of(struct asoc_simple_priv *priv,
struct device_node *top = dev->of_node;
struct asoc_simple_dai *cpu_dai;
struct asoc_simple_dai *codec_dai;
- int ret, single_cpu;
+ int ret, single_cpu = 0;
/* Do it only CPU turn */
if (!li->cpu)
diff --git a/sound/soc/generic/simple-card.c b/sound/soc/generic/simple-card.c
index 75365c7bb3930e..d916ec69c24ff5 100644
--- a/sound/soc/generic/simple-card.c
+++ b/sound/soc/generic/simple-card.c
@@ -258,7 +258,7 @@ static int simple_dai_link_of(struct asoc_simple_priv *priv,
struct device_node *plat = NULL;
char prop[128];
char *prefix = "";
- int ret, single_cpu;
+ int ret, single_cpu = 0;
/*
* |CPU |Codec : turn
--
GitLab