diff options
Diffstat (limited to 'drivers/usb/core/hub.c')
| -rw-r--r-- | drivers/usb/core/hub.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index d47201c75915..cc8f911afbc4 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -1177,12 +1177,6 @@ static int hub_probe(struct usb_interface *intf, const struct usb_device_id *id) "Unsupported bus topology: hub nested too deep\n"); return -E2BIG; } -#ifdef CONFIG_PM - /* Defaultly disable autosuspend for hub and reley on sys - * to enable it. - */ - hdev->autosuspend_disabled = 1; -#endif #ifdef CONFIG_USB_OTG_BLACKLIST_HUB if (hdev->parent) { @@ -2304,7 +2298,6 @@ static int hub_suspend(struct usb_interface *intf, pm_message_t msg) struct usb_hub *hub = usb_get_intfdata (intf); struct usb_device *hdev = hub->hdev; unsigned port1; - /* fail if children aren't already suspended */ for (port1 = 1; port1 <= hdev->maxchild; port1++) { struct usb_device *udev; @@ -2328,8 +2321,15 @@ static int hub_suspend(struct usb_interface *intf, pm_message_t msg) static int hub_resume(struct usb_interface *intf) { struct usb_hub *hub = usb_get_intfdata(intf); + struct usb_hcd *hcd = bus_to_hcd(hub->hdev->bus); dev_dbg(&intf->dev, "%s\n", __func__); + /* At otg mode, if the hcd which the hub is attached to is not accessible, + * It should do nothing. + */ + if (!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags)) + return 0; + hub_activate(hub, HUB_RESUME); return 0; } |