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authorAlexey Khoroshilov <khoroshilov@ispras.ru>2018-07-28 00:06:59 +0300
committerMark Brown <broonie@kernel.org>2018-07-30 12:02:29 +0100
commit4321723648b0abb456f7a9af51bb09a4ec60799d (patch)
tree144721856196d0026f40a853a404da5c2100533d /sound/soc/tegra
parent7464d3faf62a5adcb99f4f8ea9baabda78aed4aa (diff)
downloadlinux-4321723648b0abb456f7a9af51bb09a4ec60799d.tar.bz2
ASoC: tegra_alc5632: fix device_node refcounting
tegra_alc5632_probe() increments reference count of device nodes with of_parse_phandle(), but there is no code decrementing them in the driver. The patch adds of_node_put() to tegra_alc5632_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> Acked-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/tegra')
-rw-r--r--sound/soc/tegra/tegra_alc5632.c17
1 files changed, 15 insertions, 2 deletions
diff --git a/sound/soc/tegra/tegra_alc5632.c b/sound/soc/tegra/tegra_alc5632.c
index 5197d6b18cb6..98d87801d57a 100644
--- a/sound/soc/tegra/tegra_alc5632.c
+++ b/sound/soc/tegra/tegra_alc5632.c
@@ -190,14 +190,14 @@ static int tegra_alc5632_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_alc5632_dai.platform_of_node = tegra_alc5632_dai.cpu_of_node;
ret = tegra_asoc_utils_init(&alc5632->util_data, &pdev->dev);
if (ret)
- goto err;
+ goto err_put_cpu_of_node;
ret = snd_soc_register_card(card);
if (ret) {
@@ -210,6 +210,13 @@ static int tegra_alc5632_probe(struct platform_device *pdev)
err_fini_utils:
tegra_asoc_utils_fini(&alc5632->util_data);
+err_put_cpu_of_node:
+ of_node_put(tegra_alc5632_dai.cpu_of_node);
+ tegra_alc5632_dai.cpu_of_node = NULL;
+ tegra_alc5632_dai.platform_of_node = NULL;
+err_put_codec_of_node:
+ of_node_put(tegra_alc5632_dai.codec_of_node);
+ tegra_alc5632_dai.codec_of_node = NULL;
err:
return ret;
}
@@ -223,6 +230,12 @@ static int tegra_alc5632_remove(struct platform_device *pdev)
tegra_asoc_utils_fini(&machine->util_data);
+ of_node_put(tegra_alc5632_dai.cpu_of_node);
+ tegra_alc5632_dai.cpu_of_node = NULL;
+ tegra_alc5632_dai.platform_of_node = NULL;
+ of_node_put(tegra_alc5632_dai.codec_of_node);
+ tegra_alc5632_dai.codec_of_node = NULL;
+
return 0;
}