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ASoC: codecs: wcd938x: fix resource leaks on bind errors

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commit da29b94ed3547cee9d510d02eca4009f2de476cf upstream.

Add the missing code to release resources on bind errors, including the
references taken by wcd938x_sdw_device_get() which also need to be
dropped on unbind().

Fixes: 16572522ae ("ASoC: codecs: wcd938x-sdw: add SoundWire driver")
Cc: stable@vger.kernel.org      # 5.14
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20231003155558.27079-4-johan+linaro@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold 2023-10-03 17:55:54 +02:00 committed by Greg Kroah-Hartman
parent 8092aed623
commit cc87f4db14
1 changed files with 34 additions and 10 deletions
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44
sound/soc/codecs/wcd938x.c
View File

@ -3441,7 +3441,8 @@ static int wcd938x_bind(struct device *dev)
wcd938x->rxdev = wcd938x_sdw_device_get(wcd938x->rxnode);
if (!wcd938x->rxdev) {
dev_err(dev, "could not find slave with matching of node\n");
return -EINVAL;
ret = -EINVAL;
goto err_unbind;
}
wcd938x->sdw_priv[AIF1_PB] = dev_get_drvdata(wcd938x->rxdev);
wcd938x->sdw_priv[AIF1_PB]->wcd938x = wcd938x;
@ -3449,7 +3450,8 @@ static int wcd938x_bind(struct device *dev)
wcd938x->txdev = wcd938x_sdw_device_get(wcd938x->txnode);
if (!wcd938x->txdev) {
dev_err(dev, "could not find txslave with matching of node\n");
return -EINVAL;
ret = -EINVAL;
goto err_put_rxdev;
}
wcd938x->sdw_priv[AIF1_CAP] = dev_get_drvdata(wcd938x->txdev);
wcd938x->sdw_priv[AIF1_CAP]->wcd938x = wcd938x;
@ -3460,31 +3462,35 @@ static int wcd938x_bind(struct device *dev)
if (!device_link_add(wcd938x->rxdev, wcd938x->txdev, DL_FLAG_STATELESS |
DL_FLAG_PM_RUNTIME)) {
dev_err(dev, "could not devlink tx and rx\n");
return -EINVAL;
ret = -EINVAL;
goto err_put_txdev;
}
if (!device_link_add(dev, wcd938x->txdev, DL_FLAG_STATELESS |
DL_FLAG_PM_RUNTIME)) {
dev_err(dev, "could not devlink wcd and tx\n");
return -EINVAL;
ret = -EINVAL;
goto err_remove_rxtx_link;
}
if (!device_link_add(dev, wcd938x->rxdev, DL_FLAG_STATELESS |
DL_FLAG_PM_RUNTIME)) {
dev_err(dev, "could not devlink wcd and rx\n");
return -EINVAL;
ret = -EINVAL;
goto err_remove_tx_link;
}
wcd938x->regmap = dev_get_regmap(&wcd938x->tx_sdw_dev->dev, NULL);
if (!wcd938x->regmap) {
dev_err(dev, "could not get TX device regmap\n");
return -EINVAL;
ret = -EINVAL;
goto err_remove_rx_link;
}
ret = wcd938x_irq_init(wcd938x, dev);
if (ret) {
dev_err(dev, "%s: IRQ init failed: %d\n", __func__, ret);
return ret;
goto err_remove_rx_link;
}
wcd938x->sdw_priv[AIF1_PB]->slave_irq = wcd938x->virq;
@ -3493,17 +3499,33 @@ static int wcd938x_bind(struct device *dev)
ret = wcd938x_set_micbias_data(wcd938x);
if (ret < 0) {
dev_err(dev, "%s: bad micbias pdata\n", __func__);
return ret;
goto err_remove_rx_link;
}
ret = snd_soc_register_component(dev, &soc_codec_dev_wcd938x,
wcd938x_dais, ARRAY_SIZE(wcd938x_dais));
if (ret)
if (ret) {
dev_err(dev, "%s: Codec registration failed\n",
__func__);
goto err_remove_rx_link;
}
return 0;
err_remove_rx_link:
device_link_remove(dev, wcd938x->rxdev);
err_remove_tx_link:
device_link_remove(dev, wcd938x->txdev);
err_remove_rxtx_link:
device_link_remove(wcd938x->rxdev, wcd938x->txdev);
err_put_txdev:
put_device(wcd938x->txdev);
err_put_rxdev:
put_device(wcd938x->rxdev);
err_unbind:
component_unbind_all(dev, wcd938x);
return ret;
}
static void wcd938x_unbind(struct device *dev)
@ -3514,6 +3536,8 @@ static void wcd938x_unbind(struct device *dev)
device_link_remove(dev, wcd938x->txdev);
device_link_remove(dev, wcd938x->rxdev);
device_link_remove(wcd938x->rxdev, wcd938x->txdev);
put_device(wcd938x->txdev);
put_device(wcd938x->rxdev);
component_unbind_all(dev, wcd938x);
}