The commit dfa3cbb8(ASoC: mediatek: modify MT2701 AFE driver to adapt mfd device) leads to the following static checker warning:
sound/soc/mediatek/mt2701/mt2701-afe-pcm.c:1535 mt2701_afe_pcm_dev_probe() error: double free of 'component'
This patch fixes that and adds a helper mt2701_afe_add_component() to setup component.
Reported-by: Dan Carpenter dan.carpenter@oracle.com Signed-off-by: Ryder Lee ryder.lee@mediatek.com --- sound/soc/mediatek/mt2701/mt2701-afe-pcm.c | 32 +++++++++++++++++------------- 1 file changed, 18 insertions(+), 14 deletions(-)
diff --git a/sound/soc/mediatek/mt2701/mt2701-afe-pcm.c b/sound/soc/mediatek/mt2701/mt2701-afe-pcm.c index f0cd08f..ff15537 100644 --- a/sound/soc/mediatek/mt2701/mt2701-afe-pcm.c +++ b/sound/soc/mediatek/mt2701/mt2701-afe-pcm.c @@ -1405,9 +1405,24 @@ static int mt2701_afe_runtime_resume(struct device *dev) return mt2701_afe_enable_clock(afe); }
-static int mt2701_afe_pcm_dev_probe(struct platform_device *pdev) +static int mt2701_afe_add_component(struct mtk_base_afe *afe) { struct snd_soc_component *component; + + component = kzalloc(sizeof(*component), GFP_KERNEL); + if (!component) + return -ENOMEM; + + component->regmap = afe->regmap; + + return snd_soc_add_component(afe->dev, component, + &mt2701_afe_pcm_dai_component, + mt2701_afe_pcm_dais, + ARRAY_SIZE(mt2701_afe_pcm_dais)); +} + +static int mt2701_afe_pcm_dev_probe(struct platform_device *pdev) +{ struct mtk_base_afe *afe; struct mt2701_afe_private *afe_priv; struct device *dev; @@ -1477,12 +1492,6 @@ static int mt2701_afe_pcm_dev_probe(struct platform_device *pdev) = &mt2701_i2s_data[i][I2S_IN]; }
- component = kzalloc(sizeof(*component), GFP_KERNEL); - if (!component) - return -ENOMEM; - - component->regmap = afe->regmap; - afe->mtk_afe_hardware = &mt2701_afe_hardware; afe->memif_fs = mt2701_memif_fs; afe->irq_fs = mt2701_irq_fs; @@ -1495,7 +1504,7 @@ static int mt2701_afe_pcm_dev_probe(struct platform_device *pdev) ret = mt2701_init_clock(afe); if (ret) { dev_err(dev, "init clock error\n"); - goto err_init_clock; + return ret; }
platform_set_drvdata(pdev, afe); @@ -1514,10 +1523,7 @@ static int mt2701_afe_pcm_dev_probe(struct platform_device *pdev) goto err_platform; }
- ret = snd_soc_add_component(dev, component, - &mt2701_afe_pcm_dai_component, - mt2701_afe_pcm_dais, - ARRAY_SIZE(mt2701_afe_pcm_dais)); + ret = mt2701_afe_add_component(afe); if (ret) { dev_warn(dev, "err_dai_component\n"); goto err_dai_component; @@ -1531,8 +1537,6 @@ static int mt2701_afe_pcm_dev_probe(struct platform_device *pdev) pm_runtime_put_sync(dev); err_pm_disable: pm_runtime_disable(dev); -err_init_clock: - kfree(component);
return ret; }