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| author | Wang Li <wangli74@huawei.com> | 2021-04-09 09:54:30 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2021-04-09 13:43:59 +0100 |
| commit | a03675497970a93fcf25d81d9d92a59c2d7377a7 (patch) | |
| tree | a7299d532124ef9bad003b8df06e46a88abcf7e4 /drivers/spi/spi-fsl-lpspi.c | |
| parent | 59ebbe40fb51e307032ae7f63b2749fad2d4635a (diff) | |
| download | lwn-a03675497970a93fcf25d81d9d92a59c2d7377a7.tar.gz lwn-a03675497970a93fcf25d81d9d92a59c2d7377a7.zip | |
spi: fsl-lpspi: Fix PM reference leak in lpspi_prepare_xfer_hardware()
pm_runtime_get_sync will increment pm usage counter even it failed.
Forgetting to putting operation will result in reference leak here.
Fix it by replacing it with pm_runtime_resume_and_get to keep usage
counter balanced.
Fixes: 944c01a889d9 ("spi: lpspi: enable runtime pm for lpspi")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wang Li <wangli74@huawei.com>
Link: https://lore.kernel.org/r/20210409095430.29868-1-wangli74@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-fsl-lpspi.c')
| -rw-r--r-- | drivers/spi/spi-fsl-lpspi.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/spi/spi-fsl-lpspi.c b/drivers/spi/spi-fsl-lpspi.c index a2886ee44e4c..5d98611dd999 100644 --- a/drivers/spi/spi-fsl-lpspi.c +++ b/drivers/spi/spi-fsl-lpspi.c @@ -200,7 +200,7 @@ static int lpspi_prepare_xfer_hardware(struct spi_controller *controller) spi_controller_get_devdata(controller); int ret; - ret = pm_runtime_get_sync(fsl_lpspi->dev); + ret = pm_runtime_resume_and_get(fsl_lpspi->dev); if (ret < 0) { dev_err(fsl_lpspi->dev, "failed to enable clock\n"); return ret; |