diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c index c7bc9db5b192..98b996ecf4d3 100644 --- a/drivers/hid/usbhid/hid-core.c +++ b/drivers/hid/usbhid/hid-core.c @@ -1229,6 +1229,17 @@ static int usbhid_power(struct hid_device *hid, int lvl) struct usbhid_device *usbhid = hid->driver_data; int r = 0; + spin_lock_irq(&usbhid->lock); + if (test_bit(HID_DISCONNECTED, &usbhid->iofl)) { + r = -ENODEV; + spin_unlock_irq(&usbhid->lock); + goto bail_out; + } else { + /* protect against disconnect */ + usb_get_dev(interface_to_usbdev(usbhid->intf)); + spin_unlock_irq(&usbhid->lock); + } + switch (lvl) { case PM_HINT_FULLON: r = usb_autopm_get_interface(usbhid->intf); @@ -1238,7 +1249,9 @@ static int usbhid_power(struct hid_device *hid, int lvl) usb_autopm_put_interface(usbhid->intf); break; } + usb_put_dev(interface_to_usbdev(usbhid->intf)); +bail_out: return r; }