usbip: usbip_host_common: Use new error codes to return request status

Currently ST_OK and ST_NA are the only values used to communicate
status of a request from a client. Use new error codes to clearly
indicate what failed. For example, when client sends request to
import a device that isn't export-able, send ST_DEV_BUSY to the client.

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

1 files changed, 4 insertions, 1 deletions

diff --git a/tools/usb/usbip/libsrc/usbip_host_common.c b/tools/usb/usbip/libsrc/usbip_host_common.c
index 6ff7b601f854..dc93fadbee96 100644
--- a/tools/usb/usbip/libsrc/usbip_host_common.c
+++ b/tools/usb/usbip/libsrc/usbip_host_common.c
@@ -234,14 +234,17 @@ int usbip_export_device(struct usbip_exported_device *edev, int sockfd)
                 switch (edev->status) {
                 case SDEV_ST_ERROR:
                         dbg("status SDEV_ST_ERROR");
+                        ret = ST_DEV_ERR;
                         break;
                 case SDEV_ST_USED:
                         dbg("status SDEV_ST_USED");
+                        ret = ST_DEV_BUSY;
                         break;
                 default:
                         dbg("status unknown: 0x%x", edev->status);
+                        ret = -1;
                 }
-                return -1;
+                return ret;
         }
 
         /* only the first interface is true */