USB: usbtest.c: unsigned retval makes ctrl_out return 0 in case of error

In my quest to try and figure out why test 14 (control write) doesn't
work with my EZ-USB board, I noticed that sometimes testusb reported
no error even though the kernel log complained "byte 0 is 0 not 2" etc.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c
index 786e1dbe88ec..983e104dd452 100644
--- a/drivers/usb/misc/usbtest.c
+++ b/drivers/usb/misc/usbtest.c
@@ -1242,11 +1242,12 @@ done:
 static int ctrl_out (struct usbtest_dev *dev,
                 unsigned count, unsigned length, unsigned vary)
 {
-        unsigned                i, j, len, retval;
+        unsigned                i, j, len;
+        int                     retval;
         u8                      *buf;
         char                    *what = "?";
         struct usb_device       *udev;
-        
+
         if (length < 1 || length > 0xffff || vary >= length)
                 return -EINVAL;