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| author | Qinglang Miao <miaoqinglang@huawei.com> | 2020-12-01 12:31:44 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-14 10:44:29 +0300 |
| commit | 7e1764312440c5df9dfe6b436035a03673b0c1b9 (patch) | |
| tree | bd227224983db6674c8eaf671801fcdd77c56c28 /drivers/i2c | |
| parent | 5f51ddcbfc78088804f13391991d2d50214d42b5 (diff) | |
| download | linux-7e1764312440c5df9dfe6b436035a03673b0c1b9.tar.xz | |
i2c: sprd: fix reference leak when pm_runtime_get_sync fails
[ Upstream commit 3a4f326463117cee3adcb72999ca34a9aaafda93 ]
The PM reference count is not expected to be incremented on
return in sprd_i2c_master_xfer() and sprd_i2c_remove().
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: 8b9ec0719834 ("i2c: Add Spreadtrum I2C controller driver")
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-sprd.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/i2c/busses/i2c-sprd.c b/drivers/i2c/busses/i2c-sprd.c index b2dc80286464..92ba0183fd8a 100644 --- a/drivers/i2c/busses/i2c-sprd.c +++ b/drivers/i2c/busses/i2c-sprd.c @@ -290,7 +290,7 @@ static int sprd_i2c_master_xfer(struct i2c_adapter *i2c_adap, struct sprd_i2c *i2c_dev = i2c_adap->algo_data; int im, ret; - ret = pm_runtime_get_sync(i2c_dev->dev); + ret = pm_runtime_resume_and_get(i2c_dev->dev); if (ret < 0) return ret; @@ -577,7 +577,7 @@ static int sprd_i2c_remove(struct platform_device *pdev) struct sprd_i2c *i2c_dev = platform_get_drvdata(pdev); int ret; - ret = pm_runtime_get_sync(i2c_dev->dev); + ret = pm_runtime_resume_and_get(i2c_dev->dev); if (ret < 0) return ret; |