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 5.4-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-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit d1ec6f1c99a7628d75a9ab1d8718889e40bf3ae1 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 75b33d7d14b0..9a4d942fafcf 100644 --- a/drivers/spi/spi-dln2.c +++ b/drivers/spi/spi-dln2.c @@ -780,7 +780,7 @@ 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);