Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-25 05:32:00 +00:00
Code Issues Packages Projects Releases Wiki Activity

hwmon: (ina3221) Fix PM usage counter unbalance in ina3221_write_enable

Browse Source 
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: 323aeb0eb5 ("hwmon: (ina3221) Add PM runtime support")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Link: https://lore.kernel.org/r/20201202145320.1135614-1-zhangqilong3@huawei.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Zhang Qilong 2020-12-02 22:53:20 +08:00 committed by Guenter Roeck
parent b650545978
commit bce776f100
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/hwmon/ina3221.c
View File

@ -489,7 +489,7 @@ 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;