[PATCH] spi: mxs: fix reference leak in mxs_spi_probe

[PATCH] spi: mxs: fix reference leak in mxs_spi_probe

[Zhang Qilong]

pm_runtime_get_sync will increment pm usage counter even it
failed. Forgetting to pm_runtime_put_noidle will result in
reference leak in mxs_spi_probe, so we should fix it.

Fixes: b7969caf41a1d ("spi: mxs: implement runtime pm")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
---
 drivers/spi/spi-mxs.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/spi/spi-mxs.c b/drivers/spi/spi-mxs.c
index 918918a9e049..435309b09227 100644
--- a/drivers/spi/spi-mxs.c
+++ b/drivers/spi/spi-mxs.c
@@ -607,6 +607,7 @@ static int mxs_spi_probe(struct platform_device *pdev)
 
 	ret = pm_runtime_get_sync(ssp->dev);
 	if (ret < 0) {
+		pm_runtime_put_noidle(ssp->dev);
 		dev_err(ssp->dev, "runtime_get_sync failed\n");
 		goto out_pm_runtime_disable;
 	}
-- 
2.17.1

Re: [PATCH] spi: mxs: fix reference leak in mxs_spi_probe

[Mark Brown]

On Fri, 6 Nov 2020 09:24:21 +0800, Zhang Qilong wrote:
> pm_runtime_get_sync will increment pm usage counter even it
> failed. Forgetting to pm_runtime_put_noidle will result in
> reference leak in mxs_spi_probe, so we should fix it.

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next

Thanks!

[1/1] spi: mxs: fix reference leak in mxs_spi_probe
      commit: 03fc41afaa6549baa2dab7a84e1afaf5cadb5b18

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
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Thanks,
Mark