This is a note to let you know that I've just added the patch titled
spi: dln2: Fix reference leak to master
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
spi-dln2-fix-reference-leak-to-master.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 49c31e5f77d6bc63a7b7b81db6866f76a252f02c
Author: Wei Yongjun <weiyongjun1@xxxxxxxxxx>
Date: Fri Apr 9 08:29:55 2021 +0000
spi: dln2: Fix reference leak to master
[ Upstream commit 9b844b087124c1538d05f40fda8a4fec75af55be ]
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@xxxxxxxxxx>
Signed-off-by: Wei Yongjun <weiyongjun1@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20210409082955.2907950-1-weiyongjun1@xxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/spi/spi-dln2.c b/drivers/spi/spi-dln2.c
index b62a99caacc0..a41adea48618 100644
--- a/drivers/spi/spi-dln2.c
+++ b/drivers/spi/spi-dln2.c
@@ -783,7 +783,7 @@ exit_free_master:
static int dln2_spi_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 dln2_spi *dln2 = spi_master_get_devdata(master);
pm_runtime_disable(&pdev->dev);
