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)
commit2c662660ce2bd3b09dae21a9a9ac9395e1e6c00b
treee6fc65f7e5946cb149e43a39f03670b824195fa5
parent3a4f326463117cee3adcb72999ca34a9aaafda93
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: ea6dd25deeb5 ("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