usb: misc: usbtest: usbtest_do_ioctl may return positive integer
For case 14 and case 21, their correct return value is the number of bytes transferred, so it is a positive integer. But in usbtest_ioctl, it takes non-zero as false return value for usbtest_do_ioctl, so it will treat the correct test as wrong test, then the time on tests will be the minus value. Signed-off-by: NPeter Chen <peter.chen@nxp.com> Cc: stable <stable@vger.kernel.org> Fixes: 18fc4ebd ("usb: misc: usbtest: Remove timeval usage") Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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