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spi: tegra114: fix reference leak in tegra spi ops
author
Zhang Qilong
<zhangqilong3@huawei.com>
Tue, 3 Nov 2020 14:13:06 +0000
(22:13 +0800)
committer
Greg Kroah-Hartman
<gregkh@linuxfoundation.org>
Wed, 30 Dec 2020 10:53:06 +0000
(11:53 +0100)
[ Upstream commit
a042184c7fb99961ea083d4ec192614bec671969
]
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_spi_setup and
tegra_spi_resume), so we should fix it.
Fixes:
f333a331adfac
("spi/tegra114: add spi driver")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Link:
https://lore.kernel.org/r/20201103141306.5607-1-zhangqilong3@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/spi/spi-tegra114.c
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diff --git
a/drivers/spi/spi-tegra114.c
b/drivers/spi/spi-tegra114.c
index
ca6886a
..
a2e5907
100644
(file)
--- a/
drivers/spi/spi-tegra114.c
+++ b/
drivers/spi/spi-tegra114.c
@@
-966,6
+966,7
@@
static int tegra_spi_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);
if (cdata)
tegra_spi_cleanup(spi);
@@
-1474,6
+1475,7
@@
static int tegra_spi_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;
}