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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: 944c01a889 ("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>
This commit is contained in:
Wang Li 2021-04-09 09:54:30 +00:00 committed by Mark Brown
parent 59ebbe40fb
commit a036754979
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GPG Key ID: 24D68B725D5487D0
1 changed files with 1 additions and 1 deletions
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2
drivers/spi/spi-fsl-lpspi.c
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@ -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;