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(_sync/noidle) in such case.
Signed-off-by Liu Chuansheng <chuansheng.liu@xxxxxxxxx>
Signed-off-by: Li Fei <fei.li@xxxxxxxxx>
---
drivers/usb/core/hub.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 5480352..4a6c055 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -3148,12 +3148,13 @@ int usb_port_resume(struct usb_device *udev, pm_message_t msg)
if (port_dev->did_runtime_put) {
status = pm_runtime_get_sync(&port_dev->dev);
- port_dev->did_runtime_put = false;
if (status < 0) {
dev_dbg(&udev->dev, "can't resume usb port, status %d\n",
status);
+ pm_runtime_put_noidle(&port_dev->dev);
return status;
}
+ port_dev->did_runtime_put = false;
}
/* Skip the initial Clear-Suspend step for a remote wakeup */
--
1.7.4.1
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
