diff options
Diffstat (limited to 'drivers/usb/core/hub.c')
| -rw-r--r-- | drivers/usb/core/hub.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 256fe8c86828..8097a1476a0f 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -757,10 +757,12 @@ void usb_wakeup_notification(struct usb_device *hdev, { struct usb_hub *hub; struct usb_port *port_dev; + unsigned long flags; if (!hdev) return; + spin_lock_irqsave(&device_state_lock, flags); hub = usb_hub_to_struct_hub(hdev); if (hub) { port_dev = hub->ports[portnum - 1]; @@ -770,6 +772,7 @@ void usb_wakeup_notification(struct usb_device *hdev, set_bit(portnum, hub->wakeup_bits); kick_hub_wq(hub); } + spin_unlock_irqrestore(&device_state_lock, flags); } EXPORT_SYMBOL_GPL(usb_wakeup_notification); @@ -995,10 +998,12 @@ static int hub_hub_status(struct usb_hub *hub, mutex_lock(&hub->status_mutex); ret = get_hub_status(hub->hdev, &hub->status->hub); - if (ret < 0) { + if (ret < (int)sizeof(hub->status->hub)) { if (ret != -ENODEV) dev_err(hub->intfdev, "%s failed (err = %d)\n", __func__, ret); + if (ret >= 0) + ret = -EIO; } else { *status = le16_to_cpu(hub->status->hub.wHubStatus); *change = le16_to_cpu(hub->status->hub.wHubChange); |