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* [PATCH] [v2] spi: tegra114: Fix runtime PM imbalance on error
@ 2020-05-23 12:57 Dinghao Liu
  2020-05-28 13:08 ` Mark Brown
  0 siblings, 1 reply; 2+ messages in thread
From: Dinghao Liu @ 2020-05-23 12:57 UTC (permalink / raw)
  To: dinghao.liu, kjlu
  Cc: Laxman Dewangan, Mark Brown, Thierry Reding, Jonathan Hunter,
	linux-spi, linux-tegra, linux-kernel

pm_runtime_get_sync() increments the runtime PM usage counter even
when it returns an error code. Thus a pairing decrement is needed on
the error handling path to keep the counter balanced.

Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
---

Changelog:

v2: - Use pm_runtime_put_noidle() instead of pm_runtime_put().
---
 drivers/spi/spi-tegra114.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/spi/spi-tegra114.c b/drivers/spi/spi-tegra114.c
index 83edabdb41ad..c2c58871a947 100644
--- a/drivers/spi/spi-tegra114.c
+++ b/drivers/spi/spi-tegra114.c
@@ -1398,6 +1398,7 @@ static int tegra_spi_probe(struct platform_device *pdev)
 	ret = pm_runtime_get_sync(&pdev->dev);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "pm runtime get failed, e = %d\n", ret);
+		pm_runtime_put_noidle(&pdev->dev);
 		goto exit_pm_disable;
 	}
 
-- 
2.17.1


^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: [PATCH] [v2] spi: tegra114: Fix runtime PM imbalance on error
  2020-05-23 12:57 [PATCH] [v2] spi: tegra114: Fix runtime PM imbalance on error Dinghao Liu
@ 2020-05-28 13:08 ` Mark Brown
  0 siblings, 0 replies; 2+ messages in thread
From: Mark Brown @ 2020-05-28 13:08 UTC (permalink / raw)
  To: kjlu, Dinghao Liu
  Cc: Laxman Dewangan, linux-spi, Thierry Reding, linux-tegra,
	Jonathan Hunter, linux-kernel

On Sat, 23 May 2020 20:57:04 +0800, Dinghao Liu wrote:
> pm_runtime_get_sync() increments the runtime PM usage counter even
> when it returns an error code. Thus a pairing decrement is needed on
> the error handling path to keep the counter balanced.

Applied to

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

Thanks!

[1/1] spi: tegra114: Fix runtime PM imbalance on error
      commit: cddc36f3fd706b1046a4d4608359c0003f72db32

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

^ permalink raw reply	[flat|nested] 2+ messages in thread

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2020-05-23 12:57 [PATCH] [v2] spi: tegra114: Fix runtime PM imbalance on error Dinghao Liu
2020-05-28 13:08 ` Mark Brown

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