When end user inserts a usb3 device and put dut to s3. Then hotplug the usb3 disk under s3. The device will be lost upon resuming from s3. There is a corner case that the hub->change_bits for the usb3 port is not set when usb port change event happens. This will cause hub driver ignore the device enumeration in the end of port_event in hub.c Signed-off-by: Huki Huang <huki.huang@xxxxxxxxx> --- drivers/usb/core/hub.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index bee1351..859adcb 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -4747,6 +4747,7 @@ static void hub_port_connect(struct usb_hub *hub, int port1, u16 portstatus, if (hcd->usb_phy && !hdev->parent) usb_phy_notify_disconnect(hcd->usb_phy, udev->speed); usb_disconnect(&port_dev->child); + set_bit(port1, hub->change_bits); } /* We can forget about a "removed" device when there's a physical -- 2.8.1 -- 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
