diff options
| -rw-r--r-- | sys/dev/usb/usb_subr.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/sys/dev/usb/usb_subr.c b/sys/dev/usb/usb_subr.c index 0016d2ffed4c2..1e279870eab68 100644 --- a/sys/dev/usb/usb_subr.c +++ b/sys/dev/usb/usb_subr.c @@ -592,11 +592,19 @@ usbd_set_config_index(usbd_device_handle dev, int index, int msg) DPRINTFN(5,("usbd_set_config_index: dev=%p index=%d\n", dev, index)); - /* XXX check that all interfaces are idle */ if (dev->config != USB_UNCONFIG_NO) { + nifc = dev->cdesc->bNumInterface; + + /* Check that all interfaces are idle */ + for (ifcidx = 0; ifcidx < nifc; ifcidx++) { + if (LIST_EMPTY(&dev->ifaces[ifcidx].pipes)) + continue; + DPRINTF(("usbd_set_config_index: open pipes exist\n")); + return (USBD_IN_USE); + } + DPRINTF(("usbd_set_config_index: free old config\n")); /* Free all configuration data structures. */ - nifc = dev->cdesc->bNumInterface; for (ifcidx = 0; ifcidx < nifc; ifcidx++) usbd_free_iface_data(dev, ifcidx); free(dev->ifaces, M_USB); |