diff options
| author | Miaoqian Lin <linmq006@gmail.com> | 2022-03-08 01:39:48 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2022-03-08 12:27:51 +0000 |
| commit | b0bfaf0544d08d093d6211d7ef8816fb0b5b6c75 (patch) | |
| tree | 9cafb399e9a554d60168b2b0df6c76c6af04308a | |
| parent | 9fce18ab0bc20fd7c00c6bc880ed7aaea655918b (diff) | |
| download | linux-b0bfaf0544d08d093d6211d7ef8816fb0b5b6c75.tar.bz2 | |
ASoC: atmel: Fix error handling in snd_proto_probe
The device_node pointer is returned by of_parse_phandle() with refcount
incremented. We should use of_node_put() on it when done.
This function only calls of_node_put() in the regular path.
And it will cause refcount leak in error paths.
Fix this by calling of_node_put() in error handling too.
Fixes: a45f8853a5f9 ("ASoC: Add driver for PROTO Audio CODEC (with a WM8731)")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Reviewed-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
Link: https://lore.kernel.org/r/20220308013949.20323-1-linmq006@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
| -rw-r--r-- | sound/soc/atmel/mikroe-proto.c | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/sound/soc/atmel/mikroe-proto.c b/sound/soc/atmel/mikroe-proto.c index 627564c18c27..ce46d8a0b7e4 100644 --- a/sound/soc/atmel/mikroe-proto.c +++ b/sound/soc/atmel/mikroe-proto.c @@ -115,7 +115,8 @@ static int snd_proto_probe(struct platform_device *pdev) cpu_np = of_parse_phandle(np, "i2s-controller", 0); if (!cpu_np) { dev_err(&pdev->dev, "i2s-controller missing\n"); - return -EINVAL; + ret = -EINVAL; + goto put_codec_node; } dai->cpus->of_node = cpu_np; dai->platforms->of_node = cpu_np; @@ -125,7 +126,8 @@ static int snd_proto_probe(struct platform_device *pdev) &bitclkmaster, &framemaster); if (bitclkmaster != framemaster) { dev_err(&pdev->dev, "Must be the same bitclock and frame master\n"); - return -EINVAL; + ret = -EINVAL; + goto put_cpu_node; } if (bitclkmaster) { if (codec_np == bitclkmaster) @@ -136,18 +138,20 @@ static int snd_proto_probe(struct platform_device *pdev) dai_fmt |= snd_soc_daifmt_parse_clock_provider_as_flag(np, NULL); } - of_node_put(bitclkmaster); - of_node_put(framemaster); - dai->dai_fmt = dai_fmt; - - of_node_put(codec_np); - of_node_put(cpu_np); + dai->dai_fmt = dai_fmt; ret = snd_soc_register_card(&snd_proto); if (ret) dev_err_probe(&pdev->dev, ret, "snd_soc_register_card() failed\n"); + +put_cpu_node: + of_node_put(bitclkmaster); + of_node_put(framemaster); + of_node_put(cpu_np); +put_codec_node: + of_node_put(codec_np); return ret; } |