[src/trunk]: src/sys/dev/usb Don't do the xfer once, wait till it is done. I ...

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/cd6a9f4f2710
branches:  trunk
changeset: 784044:cd6a9f4f2710
user:      christos <christos%NetBSD.org@localhost>
date:      Tue Jan 15 23:57:13 2013 +0000

description:
Don't do the xfer once, wait till it is done. I did not find this, someone
else did. Fixes slow devices such as scanners.

diffstat:

 sys/dev/usb/usbdi.c |  6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diffs (27 lines):

diff -r 04042ee1d65d -r cd6a9f4f2710 sys/dev/usb/usbdi.c
--- a/sys/dev/usb/usbdi.c       Tue Jan 15 23:52:48 2013 +0000
+++ b/sys/dev/usb/usbdi.c       Tue Jan 15 23:57:13 2013 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: usbdi.c,v 1.142 2013/01/05 23:34:20 christos Exp $     */
+/*     $NetBSD: usbdi.c,v 1.143 2013/01/15 23:57:13 christos Exp $     */
 
 /*
  * Copyright (c) 1998, 2012 The NetBSD Foundation, Inc.
@@ -31,7 +31,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: usbdi.c,v 1.142 2013/01/05 23:34:20 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD: usbdi.c,v 1.143 2013/01/15 23:57:13 christos Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_compat_netbsd.h"
@@ -319,7 +319,7 @@
        if (err != USBD_IN_PROGRESS)
                return (err);
        usbd_lock_pipe(pipe);
-       if (!xfer->done) {
+       while (!xfer->done) {
                if (pipe->device->bus->use_polling)
                        panic("usbd_transfer: not done");