From: Zhang Qilong <zhangqilong3@xxxxxxxxxx>
[ Upstream commit bce776f10069c806290eaac712ba73432ae8ecd7 ]
pm_runtime_get_sync will increment pm usage counter
even it failed. Forgetting to putting operation will
result in reference leak here. We fix it by replacing
it with pm_runtime_resume_and_get to keep usage counter
balanced. It depends on the mainline commit[PM: runtime:
Add pm_runtime_resume_and_get to deal with usagecounter].
Fixes: 323aeb0eb5d9a ("hwmon: (ina3221) Add PM runtime support")
Signed-off-by: Zhang Qilong <zhangqilong3@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20201202145320.1135614-1-zhangqilong3@xxxxxxxxxx
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/hwmon/ina3221.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/hwmon/ina3221.c b/drivers/hwmon/ina3221.c
index 8a51dcf055eab..026f70d7c5a43 100644
--- a/drivers/hwmon/ina3221.c
+++ b/drivers/hwmon/ina3221.c
@@ -403,7 +403,7 @@ static int ina3221_write_enable(struct device *dev, int channel, bool enable)
/* For enabling routine, increase refcount and resume() at first */
if (enable) {
- ret = pm_runtime_get_sync(ina->pm_dev);
+ ret = pm_runtime_resume_and_get(ina->pm_dev);
if (ret < 0) {
dev_err(dev, "Failed to get PM runtime\n");
return ret;
--
2.27.0
