[PATCH 1/2] ASoC: fsl_mqs: move of_node_put() to the correct location
of_node_put() should have been done directly after mqs_priv->regmap = syscon_node_to_regmap(gpr_np); otherwise it creates a reference leak on the success path.
To fix this, of_node_put() is moved to the correct location, and change all the gotos to direct returns.
Fixes: a9d273671440 ("ASoC: fsl_mqs: Fix error handling in probe") Signed-off-by: Liliang Ye yll@hust.edu.cn Reviewed-by: Dan Carpenter error27@gmail.com --- sound/soc/fsl/fsl_mqs.c | 15 +++++---------- 1 file changed, 5 insertions(+), 10 deletions(-)
diff --git a/sound/soc/fsl/fsl_mqs.c b/sound/soc/fsl/fsl_mqs.c index 4922e6795b73..32d20d351bbf 100644 --- a/sound/soc/fsl/fsl_mqs.c +++ b/sound/soc/fsl/fsl_mqs.c @@ -210,10 +210,10 @@ static int fsl_mqs_probe(struct platform_device *pdev) }
mqs_priv->regmap = syscon_node_to_regmap(gpr_np); + of_node_put(gpr_np); if (IS_ERR(mqs_priv->regmap)) { dev_err(&pdev->dev, "failed to get gpr regmap\n"); - ret = PTR_ERR(mqs_priv->regmap); - goto err_free_gpr_np; + return PTR_ERR(mqs_priv->regmap); } } else { regs = devm_platform_ioremap_resource(pdev, 0); @@ -242,8 +242,7 @@ static int fsl_mqs_probe(struct platform_device *pdev) if (IS_ERR(mqs_priv->mclk)) { dev_err(&pdev->dev, "failed to get the clock: %ld\n", PTR_ERR(mqs_priv->mclk)); - ret = PTR_ERR(mqs_priv->mclk); - goto err_free_gpr_np; + return PTR_ERR(mqs_priv->mclk); }
dev_set_drvdata(&pdev->dev, mqs_priv); @@ -252,13 +251,9 @@ static int fsl_mqs_probe(struct platform_device *pdev) ret = devm_snd_soc_register_component(&pdev->dev, &soc_codec_fsl_mqs, &fsl_mqs_dai, 1); if (ret) - goto err_free_gpr_np; - return 0; - -err_free_gpr_np: - of_node_put(gpr_np); + return ret;
- return ret; + return 0; }
static int fsl_mqs_remove(struct platform_device *pdev)
On Mon, Apr 03, 2023 at 11:26:47PM +0800, Liliang Ye wrote:
of_node_put() should have been done directly after mqs_priv->regmap = syscon_node_to_regmap(gpr_np); otherwise it creates a reference leak on the success path.
To fix this, of_node_put() is moved to the correct location, and change all the gotos to direct returns.
Fixes: a9d273671440 ("ASoC: fsl_mqs: Fix error handling in probe") Signed-off-by: Liliang Ye yll@hust.edu.cn Reviewed-by: Dan Carpenter error27@gmail.com
These patches are from a university. I think this patch was based on manual review rather than static analysis. They have not been tested and this one affects the success path so that's always extra risky.
However I do believe the patch is correct and reviewed it before it was sent publically.
regards, dan carpenter
On Mon, 03 Apr 2023 23:26:47 +0800, Liliang Ye wrote:
of_node_put() should have been done directly after mqs_priv->regmap = syscon_node_to_regmap(gpr_np); otherwise it creates a reference leak on the success path.
To fix this, of_node_put() is moved to the correct location, and change all the gotos to direct returns.
[...]
Applied to
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next
Thanks!
[1/2] ASoC: fsl_mqs: move of_node_put() to the correct location commit: 1c34890273a020d61d6127ade3f68ed1cb21c16a
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.
Please add any relevant lists and maintainers to the CCs when replying to this mail.
Thanks, Mark
participants (3)
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Dan Carpenter
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Liliang Ye
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Mark Brown