i2c: imx: fix reference leak when pm_runtime_get_sync fails
authorQinglang Miao <miaoqinglang@huawei.com>
Tue, 1 Dec 2020 09:31:41 +0000 (17:31 +0800)
committerWolfram Sang <wsa@kernel.org>
Wed, 14 Apr 2021 07:49:13 +0000 (09:49 +0200)
commit47ff617217ca6a13194fcb35c6c3a0c57c080693
treed9568d17133dae71c253626c5e67ac49f27f49e9
parent278e5bbdb9a94fa063c0f9bcde2479d0b8042462
i2c: imx: fix reference leak when pm_runtime_get_sync fails

In i2c_imx_xfer() and i2c_imx_remove(), the pm reference count
is not expected to be incremented on return.

However, pm_runtime_get_sync will increment 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: 3a5ee18d2a32 ("i2c: imx: implement master_xfer_atomic callback")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com>
Reviewed-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
drivers/i2c/busses/i2c-imx.c