- FIFO's are always opened separately in read and write

direction even if the actual device is opened for read and
        write. Fix fflags check so that the UFM and URIO drivers work.
Reported by: Krassimir Slavchev

Submitted by:	hps

sys/dev/usb/misc/ufm.c

@@ -86,11 +86,9 @@ static device_attach_t ufm_attach;
 static device_detach_t ufm_detach;
 
 static usb_fifo_ioctl_t ufm_ioctl;
-static usb_fifo_open_t ufm_open;
 
 static struct usb_fifo_methods ufm_fifo_methods = {
 	.f_ioctl = &ufm_ioctl,
-	.f_open = &ufm_open,
 	.basename[0] = "ufm",
 };
 
@@ -178,15 +176,6 @@ ufm_detach(device_t dev)
 	return (0);
 }
 
-static int
-ufm_open(struct usb_fifo *dev, int fflags)
-{
-	if ((fflags & (FWRITE | FREAD)) != (FWRITE | FREAD)) {
-		return (EACCES);
-	}
-	return (0);
-}
-
 static int
 ufm_do_req(struct ufm_softc *sc, uint8_t request,
     uint16_t value, uint16_t index, uint8_t *retbuf)
@@ -315,6 +304,10 @@ ufm_ioctl(struct usb_fifo *fifo, u_long cmd, void *addr,
 	struct ufm_softc *sc = usb_fifo_softc(fifo);
 	int error = 0;
 
+	if ((fflags & (FWRITE | FREAD)) != (FWRITE | FREAD)) {
+		return (EACCES);
+	}
+
 	switch (cmd) {
 	case FM_SET_FREQ:
 		error = ufm_set_freq(sc, addr);

sys/dev/usb/storage/urio.c

@@ -390,9 +390,6 @@ urio_open(struct usb_fifo *fifo, int fflags)
 {
 	struct urio_softc *sc = usb_fifo_softc(fifo);
 
-	if ((fflags & (FWRITE | FREAD)) != (FWRITE | FREAD)) {
-		return (EACCES);
-	}
 	if (fflags & FREAD) {
 		/* clear stall first */
 		mtx_lock(&sc->sc_mtx);