From: Krzysztof Kozlowski krzysztof.kozlowski@canonical.com
[ 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@canonic... 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 16a04a678828..6245ca7bedb0 100644 --- a/sound/soc/generic/audio-graph-card.c +++ b/sound/soc/generic/audio-graph-card.c @@ -380,7 +380,7 @@ 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 75365c7bb393..d916ec69c24f 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