diff options
| author |   Qinglang Miao <miaoqinglang@huawei.com> | 2020-12-01 17:31:46 +0800 |
|---|---|---|
| committer |   Wolfram Sang <wsa@kernel.org> | 2021-04-14 09:49:26 +0200 |
| commit | a85c5c7a3aa8041777ff691400b4046e56149fd3 (patch) | |
| tree | 0863b52131f2479fc8dca42ffcf6315554ffb710 /drivers/i2c | |
| parent | i2c: stm32f7: fix reference leak when pm_runtime_get_sync fails (diff) | |
| download | linux-dev-a85c5c7a3aa8041777ff691400b4046e56149fd3.tar.xz linux-dev-a85c5c7a3aa8041777ff691400b4046e56149fd3.zip | |
i2c: xiic: fix reference leak when pm_runtime_get_sync fails
The PM reference count is not expected to be incremented on
return in xiic_xfer and xiic_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: 10b17004a74c ("i2c: xiic: Fix the clocking across bind unbind")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-xiic.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/i2c/busses/i2c-xiic.c b/drivers/i2c/busses/i2c-xiic.c index 087b2951942e..2a8568b97c14 100644 --- a/drivers/i2c/busses/i2c-xiic.c +++ b/drivers/i2c/busses/i2c-xiic.c @@ -706,7 +706,7 @@ static int xiic_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num) dev_dbg(adap->dev.parent, "%s entry SR: 0x%x\n", __func__, xiic_getreg8(i2c, XIIC_SR_REG_OFFSET)); - err = pm_runtime_get_sync(i2c->dev); + err = pm_runtime_resume_and_get(i2c->dev); if (err < 0) return err; @@ -873,7 +873,7 @@ static int xiic_i2c_remove(struct platform_device *pdev) /* remove adapter & data */ i2c_del_adapter(&i2c->adap); - ret = pm_runtime_get_sync(i2c->dev); + ret = pm_runtime_resume_and_get(i2c->dev); if (ret < 0) return ret; |