From: Zheng Yongjun zhengyongjun3@huawei.com
[ Upstream commit 26623eea0da3476446909af96c980768df07bbd9 ]
pm_runtime_get_sync() will increment pm usage counter even it failed. Forgetting to call pm_runtime_put_noidle will result in reference leak in stmfts_input_open, so we should fix it.
Signed-off-by: Zheng Yongjun zhengyongjun3@huawei.com Link: https://lore.kernel.org/r/20220317131604.53538-1-zhengyongjun3@huawei.com Signed-off-by: Dmitry Torokhov dmitry.torokhov@gmail.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/input/touchscreen/stmfts.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/input/touchscreen/stmfts.c b/drivers/input/touchscreen/stmfts.c index d9e93dabbca2..9007027a7ad9 100644 --- a/drivers/input/touchscreen/stmfts.c +++ b/drivers/input/touchscreen/stmfts.c @@ -344,11 +344,11 @@ static int stmfts_input_open(struct input_dev *dev)
err = pm_runtime_get_sync(&sdata->client->dev); if (err < 0) - return err; + goto out;
err = i2c_smbus_write_byte(sdata->client, STMFTS_MS_MT_SENSE_ON); if (err) - return err; + goto out;
mutex_lock(&sdata->mutex); sdata->running = true; @@ -371,7 +371,9 @@ static int stmfts_input_open(struct input_dev *dev) "failed to enable touchkey\n"); }
- return 0; +out: + pm_runtime_put_noidle(&sdata->client->dev); + return err; }
static void stmfts_input_close(struct input_dev *dev)