[23/75] hwspinlock: fix __hwspin_lock_request error path

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



3.2.44-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Li Fei <fei.li@xxxxxxxxx>

commit c10b90d85a5126d25c89cbaa50dc9fdd1c4d001a upstream.

Even in failed case of pm_runtime_get_sync, the usage_count
is incremented. In order to keep the usage_count with correct
value and runtime power management to behave correctly, call
pm_runtime_put_noidle in such case.

In __hwspin_lock_request, module_put is also called before
return in pm_runtime_get_sync failed case.

Signed-off-by Liu Chuansheng <chuansheng.liu@xxxxxxxxx>
Signed-off-by: Li Fei <fei.li@xxxxxxxxx>
[edit commit log]
Signed-off-by: Ohad Ben-Cohen <ohad@xxxxxxxxxx>
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
 drivers/hwspinlock/hwspinlock_core.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/hwspinlock/hwspinlock_core.c
+++ b/drivers/hwspinlock/hwspinlock_core.c
@@ -416,6 +416,8 @@ static int __hwspin_lock_request(struct
 	ret = pm_runtime_get_sync(dev);
 	if (ret < 0) {
 		dev_err(dev, "%s: can't power on device\n", __func__);
+		pm_runtime_put_noidle(dev);
+		module_put(dev->driver->owner);
 		return ret;
 	}
 

--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Kernel]     [Kernel Development Newbies]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Hiking]     [Linux Kernel]     [Linux SCSI]