diff options
Diffstat (limited to 'sys/dev/usb/usb_hub.c')
| -rw-r--r-- | sys/dev/usb/usb_hub.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/sys/dev/usb/usb_hub.c b/sys/dev/usb/usb_hub.c index 8652661..168e9eb 100644 --- a/sys/dev/usb/usb_hub.c +++ b/sys/dev/usb/usb_hub.c @@ -707,6 +707,13 @@ uhub_explore(struct usb_device *udev) DPRINTF("Device is suspended!\n"); return (0); } + + /* + * Make sure we don't race against user-space applications + * like LibUSB: + */ + usbd_enum_lock(udev); + for (x = 0; x != hub->nports; x++) { up = hub->ports + x; portno = x + 1; @@ -784,6 +791,8 @@ uhub_explore(struct usb_device *udev) up->restartcnt = 0; } + usbd_enum_unlock(udev); + /* initial status checked */ sc->sc_flags |= UHUB_FLAG_DID_EXPLORE; |
