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* [PATCH -next] spi: omap-100k: Fix reference leak to master
@ 2021-04-09  8:29 Wei Yongjun
  2021-04-09 16:22 ` Mark Brown
  0 siblings, 1 reply; 2+ messages in thread
From: Wei Yongjun @ 2021-04-09  8:29 UTC (permalink / raw)
  To: weiyongjun1, Mark Brown; +Cc: linux-spi, kernel-janitors, Hulk Robot

Call spi_master_get() holds the reference count to master device, thus
we need an additional spi_master_put() call to reduce the reference
count, otherwise we will leak a reference to master.

This commit fix it by removing the unnecessary spi_master_get().

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
---
 drivers/spi/spi-omap-100k.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/spi/spi-omap-100k.c b/drivers/spi/spi-omap-100k.c
index 189fd2dda37b..7062f2902253 100644
--- a/drivers/spi/spi-omap-100k.c
+++ b/drivers/spi/spi-omap-100k.c
@@ -424,7 +424,7 @@ static int omap1_spi100k_probe(struct platform_device *pdev)
 
 static int omap1_spi100k_remove(struct platform_device *pdev)
 {
-	struct spi_master *master = spi_master_get(platform_get_drvdata(pdev));
+	struct spi_master *master = platform_get_drvdata(pdev);
 	struct omap1_spi100k *spi100k = spi_master_get_devdata(master);
 
 	pm_runtime_disable(&pdev->dev);
@@ -438,7 +438,7 @@ static int omap1_spi100k_remove(struct platform_device *pdev)
 #ifdef CONFIG_PM
 static int omap1_spi100k_runtime_suspend(struct device *dev)
 {
-	struct spi_master *master = spi_master_get(dev_get_drvdata(dev));
+	struct spi_master *master = dev_get_drvdata(dev);
 	struct omap1_spi100k *spi100k = spi_master_get_devdata(master);
 
 	clk_disable_unprepare(spi100k->ick);
@@ -449,7 +449,7 @@ static int omap1_spi100k_runtime_suspend(struct device *dev)
 
 static int omap1_spi100k_runtime_resume(struct device *dev)
 {
-	struct spi_master *master = spi_master_get(dev_get_drvdata(dev));
+	struct spi_master *master = dev_get_drvdata(dev);
 	struct omap1_spi100k *spi100k = spi_master_get_devdata(master);
 	int ret;
 


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

* Re: [PATCH -next] spi: omap-100k: Fix reference leak to master
  2021-04-09  8:29 [PATCH -next] spi: omap-100k: Fix reference leak to master Wei Yongjun
@ 2021-04-09 16:22 ` Mark Brown
  0 siblings, 0 replies; 2+ messages in thread
From: Mark Brown @ 2021-04-09 16:22 UTC (permalink / raw)
  To: Wei Yongjun; +Cc: Mark Brown, kernel-janitors, Hulk Robot, linux-spi

On Fri, 9 Apr 2021 08:29:54 +0000, Wei Yongjun wrote:
> Call spi_master_get() holds the reference count to master device, thus
> we need an additional spi_master_put() call to reduce the reference
> count, otherwise we will leak a reference to master.
> 
> This commit fix it by removing the unnecessary spi_master_get().

Applied to

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

Thanks!

[1/1] spi: omap-100k: Fix reference leak to master
      commit: a23faea76d4cf5f75decb574491e66f9ecd707e7

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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2021-04-09  8:29 [PATCH -next] spi: omap-100k: Fix reference leak to master Wei Yongjun
2021-04-09 16:22 ` Mark Brown

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