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ASoC: tegra: fix device_node refcounting 

tegra_rt5677_probe() gets a couple of device nodes with of_parse_phandle(),
but there is no release of them.

The patch adds the release to tegra_rt5677_remove() and
to error handling paths in the probe.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Reviewed-by: Nicholas Mc Guire <der.herr@hofr.at>
Signed-off-by: Mark Brown <broonie@kernel.org>
hifive-unleashed-5.1
Alexey Khoroshilov 2018-06-16 01:22:58 +03:00 committed by Mark Brown
parent a4519526eb
commit 7c5dfd5496
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 15 additions and 2 deletions
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17
sound/soc/tegra/tegra_rt5677.c
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@ -264,13 +264,13 @@ static int tegra_rt5677_probe(struct platform_device *pdev)
dev_err(&pdev->dev,
"Property 'nvidia,i2s-controller' missing or invalid\n");
ret = -EINVAL;
goto err;
goto err_put_codec_of_node;
}
tegra_rt5677_dai.platform_of_node = tegra_rt5677_dai.cpu_of_node;
ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
if (ret)
goto err;
goto err_put_cpu_of_node;
ret = snd_soc_register_card(card);
if (ret) {
@ -283,6 +283,13 @@ static int tegra_rt5677_probe(struct platform_device *pdev)
err_fini_utils:
tegra_asoc_utils_fini(&machine->util_data);
err_put_cpu_of_node:
of_node_put(tegra_rt5677_dai.cpu_of_node);
tegra_rt5677_dai.cpu_of_node = NULL;
tegra_rt5677_dai.platform_of_node = NULL;
err_put_codec_of_node:
of_node_put(tegra_rt5677_dai.codec_of_node);
tegra_rt5677_dai.codec_of_node = NULL;
err:
return ret;
}
@ -296,6 +303,12 @@ static int tegra_rt5677_remove(struct platform_device *pdev)
tegra_asoc_utils_fini(&machine->util_data);
tegra_rt5677_dai.platform_of_node = NULL;
of_node_put(tegra_rt5677_dai.codec_of_node);
tegra_rt5677_dai.codec_of_node = NULL;
of_node_put(tegra_rt5677_dai.cpu_of_node);
tegra_rt5677_dai.cpu_of_node = NULL;
return 0;
}