pm_runtime_get_sync will increment pm usage counter even it failed. thus a pairing decrement is needed. Fix it by replacing it with pm_runtime_resume_and_get to keep usage counter balanced.
Reported-by: Hulk Robot <[email protected]> Signed-off-by: Bixuan Cui <[email protected]> --- drivers/usb/core/hub.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 9a83390072da..b2bc4b7c4289 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -3605,7 +3605,7 @@ int usb_port_resume(struct usb_device *udev, pm_message_t msg) u16 portchange, portstatus; if (!test_and_set_bit(port1, hub->child_usage_bits)) { - status = pm_runtime_get_sync(&port_dev->dev); + status = pm_runtime_resume_and_get(&port_dev->dev); if (status < 0) { dev_dbg(&udev->dev, "can't resume usb port, status %d\n", status); -- 2.17.1
