diff options
Diffstat (limited to 'tools/usb/usbip/src/usbip_bind.c')
| -rw-r--r-- | tools/usb/usbip/src/usbip_bind.c | 23 |
1 files changed, 10 insertions, 13 deletions
diff --git a/tools/usb/usbip/src/usbip_bind.c b/tools/usb/usbip/src/usbip_bind.c index fa46141ae68b..f1cf9225a69c 100644 --- a/tools/usb/usbip/src/usbip_bind.c +++ b/tools/usb/usbip/src/usbip_bind.c @@ -1,19 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (C) 2011 matt mooney <mfm@muteddisk.com> * 2005-2007 Takahiro Hirofuchi - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <libudev.h> @@ -144,6 +132,7 @@ static int bind_device(char *busid) int rc; struct udev *udev; struct udev_device *dev; + const char *devpath; /* Check whether the device with this bus ID exists. */ udev = udev_new(); @@ -152,8 +141,16 @@ static int bind_device(char *busid) err("device with the specified bus ID does not exist"); return -1; } + devpath = udev_device_get_devpath(dev); udev_unref(udev); + /* If the device is already attached to vhci_hcd - bail out */ + if (strstr(devpath, USBIP_VHCI_DRV_NAME)) { + err("bind loop detected: device: %s is attached to %s\n", + devpath, USBIP_VHCI_DRV_NAME); + return -1; + } + rc = unbind_other(busid); if (rc == UNBIND_ST_FAILED) { err("could not unbind driver from device on busid %s", busid); |