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ASoC: simple-card: fix possible uninitialized single_cpu local variable

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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: 8f7f298a33 ("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>
This commit is contained in:
Krzysztof Kozlowski 2021-04-07 11:20:27 +02:00 committed by Mark Brown
parent af4b54127b
commit fa74c223b6
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 2 additions and 2 deletions
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2
sound/soc/generic/audio-graph-card.c
View File

@ -367,7 +367,7 @@ 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;
dev_dbg(dev, "link_of (%pOF)\n", cpu_ep);

2
sound/soc/generic/simple-card.c
View File

@ -249,7 +249,7 @@ 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 = np;
node = of_get_parent(np);