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| author | Qinglang Miao <miaoqinglang@huawei.com> | 2020-12-01 17:31:40 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-14 09:44:29 +0200 |
| commit | 815859cb1d2302e74f11bf6894bceace9ca9eb4a (patch) | |
| tree | ae00a12160974215d45de9b86d1969f19a6afcd6 /drivers/i2c | |
| parent | 4734c4b1d9573c9d20bbc46cf37dde095ee011b8 (diff) | |
| download | linux-815859cb1d2302e74f11bf6894bceace9ca9eb4a.tar.gz linux-815859cb1d2302e74f11bf6894bceace9ca9eb4a.tar.bz2 linux-815859cb1d2302e74f11bf6894bceace9ca9eb4a.zip | |
i2c: imx-lpi2c: fix reference leak when pm_runtime_get_sync fails
[ Upstream commit 278e5bbdb9a94fa063c0f9bcde2479d0b8042462 ]
The PM reference count is not expected to be incremented on
return in lpi2c_imx_master_enable.
However, pm_runtime_get_sync will increment the PM reference
count even failed. Forgetting to putting operation will result
in a reference leak here.
Replace it with pm_runtime_resume_and_get to keep usage
counter balanced.
Fixes: 13d6eb20fc79 ("i2c: imx-lpi2c: add runtime pm support")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-imx-lpi2c.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/i2c/busses/i2c-imx-lpi2c.c b/drivers/i2c/busses/i2c-imx-lpi2c.c index c92b56485fa6..a0d045c1bc9e 100644 --- a/drivers/i2c/busses/i2c-imx-lpi2c.c +++ b/drivers/i2c/busses/i2c-imx-lpi2c.c @@ -265,7 +265,7 @@ static int lpi2c_imx_master_enable(struct lpi2c_imx_struct *lpi2c_imx) unsigned int temp; int ret; - ret = pm_runtime_get_sync(lpi2c_imx->adapter.dev.parent); + ret = pm_runtime_resume_and_get(lpi2c_imx->adapter.dev.parent); if (ret < 0) return ret; |