]> git.baikalelectronics.ru Git - kernel.git/commit
i2c: stm32f7: fix reference leak when pm_runtime_get_sync fails
authorQinglang Miao <miaoqinglang@huawei.com>
Tue, 1 Dec 2020 09:31:45 +0000 (17:31 +0800)
committerWolfram Sang <wsa@kernel.org>
Wed, 14 Apr 2021 07:49:23 +0000 (09:49 +0200)
commit9fe2993c3578738f2dc40989452ccf2185f09fdd
treee6fc65f7e5946cb149e43a39f03670b824195fa5
parent2aafe019c9ff11c04096474f3643cd01b2c5617a
i2c: stm32f7: fix reference leak when pm_runtime_get_sync fails

The PM reference count is not expected to be incremented on
return in these stm32f7_i2c_xx serious functions.

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: 3c41833cce00 ("i2c: stm32f7: add PM_SLEEP suspend/resume support")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
drivers/i2c/busses/i2c-stm32f7.c