diff options
| author | Qinglang Miao <miaoqinglang@huawei.com> | 2020-12-01 17:31:39 +0800 |
|---|---|---|
| committer | Wolfram Sang <wsa@kernel.org> | 2021-04-14 09:49:06 +0200 |
| commit | 223125e37af8a641ea4a09747a6a52172fc4b903 (patch) | |
| tree | 494d361be04bc24550b5aec97fa415a127f5b55f /drivers/i2c/busses/i2c-img-scb.c | |
| parent | 23ceb8462dc6f4b4decdb5536a7e5fc477cdf0b6 (diff) | |
| download | linux-223125e37af8a641ea4a09747a6a52172fc4b903.tar.bz2 | |
i2c: img-scb: fix reference leak when pm_runtime_get_sync fails
The PM reference count is not expected to be incremented on
return in functions img_i2c_xfer and img_i2c_init.
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: 93222bd9b966 ("i2c: img-scb: Add runtime PM")
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/busses/i2c-img-scb.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-img-scb.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/i2c/busses/i2c-img-scb.c b/drivers/i2c/busses/i2c-img-scb.c index 98a89301ed2a..8e987945ed45 100644 --- a/drivers/i2c/busses/i2c-img-scb.c +++ b/drivers/i2c/busses/i2c-img-scb.c @@ -1057,7 +1057,7 @@ static int img_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, atomic = true; } - ret = pm_runtime_get_sync(adap->dev.parent); + ret = pm_runtime_resume_and_get(adap->dev.parent); if (ret < 0) return ret; @@ -1158,7 +1158,7 @@ static int img_i2c_init(struct img_i2c *i2c) u32 rev; int ret; - ret = pm_runtime_get_sync(i2c->adap.dev.parent); + ret = pm_runtime_resume_and_get(i2c->adap.dev.parent); if (ret < 0) return ret; |