cppcheck throws the following warning:

sound/soc/soc-core.c:2773:6: style: Condition '!num_widgets' is always false [knownConditionTrueFalse] if (!num_widgets) { ^

sound/soc/soc-core.c:2761:18: note: Assuming that condition 'num_widgets<0' is not redundant if (num_widgets < 0) { ^ sound/soc/soc-core.c:2766:18: note: Assuming condition is false if (num_widgets & 1) { ^ sound/soc/soc-core.c:2772:2: note: Compound assignment '/=', assigned value is 0 num_widgets /= 2; ^

We should check upfront all error conditions.

Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Reviewed-by: Bard Liao yung-chuan.liao@linux.intel.com Reviewed-by: Rander Wang rander.wang@intel.com Reviewed-by: Péter Ujfalusi peter.ujfalusi@linux.intel.com --- sound/soc/soc-core.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index aa687fd126db2..d68e64b73eea7 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -2763,6 +2763,11 @@ int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card *card, "ASoC: Property '%s' does not exist\n", propname); return -EINVAL; } + if (!num_widgets) { + dev_err(card->dev, "ASoC: Property '%s's length is zero\n", + propname); + return -EINVAL; + } if (num_widgets & 1) { dev_err(card->dev, "ASoC: Property '%s' length is not even\n", propname); @@ -2770,11 +2775,6 @@ int snd_soc_of_parse_audio_simple_widgets(struct snd_soc_card *card, }

num_widgets /= 2; - if (!num_widgets) { - dev_err(card->dev, "ASoC: Property '%s's length is zero\n", - propname); - return -EINVAL; - }

widgets = devm_kcalloc(card->dev, num_widgets, sizeof(*widgets), GFP_KERNEL);