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spi: tegra20-slink: fix reference leak in slink ops of tegra20 

[ Upstream commit 763eab7074 ]

pm_runtime_get_sync will increment pm usage counter even it
failed. Forgetting to pm_runtime_put_noidle will result in
reference leak in two callers(tegra_slink_setup and
tegra_slink_resume), so we should fix it.

Fixes: dc4dc36056 ("spi: tegra: add spi driver for SLINK controller")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Link: https://lore.kernel.org/r/20201103141345.6188-1-zhangqilong3@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5.4-rM2-2.2.x-imx-squashed
Zhang Qilong 2020-11-03 22:13:45 +08:00 committed by Greg Kroah-Hartman
parent 0a3196271b
commit f9e5e84eb4
1 changed files with 2 additions and 0 deletions
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2
drivers/spi/spi-tegra20-slink.c
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@ -756,6 +756,7 @@ static int tegra_slink_setup(struct spi_device *spi)
ret = pm_runtime_get_sync(tspi->dev);
if (ret < 0) {
pm_runtime_put_noidle(tspi->dev);
dev_err(tspi->dev, "pm runtime failed, e = %d\n", ret);
return ret;
}
@ -1192,6 +1193,7 @@ static int tegra_slink_resume(struct device *dev)
ret = pm_runtime_get_sync(dev);
if (ret < 0) {
pm_runtime_put_noidle(dev);
dev_err(dev, "pm runtime failed, e = %d\n", ret);
return ret;
}