usbip: remove check for negative values for an unsigned value

The parameter rhport is unsigned so there is no need checking for
negative values.

This will remove the following warning message when compiling with "make W=1 ...":
  drivers/staging/usbip/vhci_sysfs.c: In function ‘valid_args’:
  drivers/staging/usbip/vhci_sysfs.c:138: warning: comparison of unsigned expression < 0 is always false

Signed-off-by: Márton Németh <nm127@freemail.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/usbip/vhci_sysfs.c b/drivers/staging/usbip/vhci_sysfs.c
index d9736f9c4028bc38b04850ee3d002c131d888a71..7b6e4a90212f1812caed7505f7a4b432b4af59e9 100644 (file)
--- a/drivers/staging/usbip/vhci_sysfs.c
+++ b/drivers/staging/usbip/vhci_sysfs.c
@@ -135,7 +135,7 @@ static DEVICE_ATTR(detach, S_IWUSR, NULL, store_detach);
 static int valid_args(__u32 rhport, enum usb_device_speed speed)
 {
        /* check rhport */
-       if ((rhport < 0) || (rhport >= VHCI_NPORTS)) {
+       if (rhport >= VHCI_NPORTS) {
                pr_err("port %u\n", rhport);
                return -EINVAL;
        }