usbip: list: don't list devices attached to vhci_hcd

usbip host lists devices attached to vhci_hcd on the same server
when user does attach over localhost or specifies the server as the
remote.

usbip attach -r localhost -b busid
or
usbip attach -r servername (or server IP)

Fix it to check and not list devices that are attached to vhci_hcd.

Cc: stable@vger.kernel.org
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 9 insertions, 0 deletions

diff --git a/tools/usb/usbip/src/usbip_list.c b/tools/usb/usbip/src/usbip_list.c
index f1b38e866dd7..d65a9f444174 100644
--- a/tools/usb/usbip/src/usbip_list.c
+++ b/tools/usb/usbip/src/usbip_list.c
@@ -187,6 +187,7 @@ static int list_devices(bool parsable)
         const char *busid;
         char product_name[128];
         int ret = -1;
+        const char *devpath;
 
         /* Create libudev context. */
         udev = udev_new();
@@ -209,6 +210,14 @@ static int list_devices(bool parsable)
                 path = udev_list_entry_get_name(dev_list_entry);
                 dev = udev_device_new_from_syspath(udev, path);
 
+                /* Ignore devices attached to vhci_hcd */
+                devpath = udev_device_get_devpath(dev);
+                if (strstr(devpath, USBIP_VHCI_DRV_NAME)) {
+                        dbg("Skip the device %s already attached to %s\n",
+                            devpath, USBIP_VHCI_DRV_NAME);
+                        continue;
+                }
+
                 /* Get device information. */
                 idVendor = udev_device_get_sysattr_value(dev, "idVendor");
                 idProduct = udev_device_get_sysattr_value(dev, "idProduct");