[src/trunk]: src/sys/dev/usb KASSERT -> KASSERTMSG and while I'm here update ...

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

details:   https://anonhg.NetBSD.org/src/rev/6db43fbcdce4
branches:  trunk
changeset: 827184:6db43fbcdce4
user:      skrll <skrll%NetBSD.org@localhost>
date:      Thu Oct 19 05:39:22 2017 +0000

description:
KASSERT -> KASSERTMSG and while I'm here update a comment

diffstat:

 sys/dev/usb/usbdi.c |  9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)

diffs (37 lines):

diff -r f8daa79dd214 -r 6db43fbcdce4 sys/dev/usb/usbdi.c
--- a/sys/dev/usb/usbdi.c       Thu Oct 19 03:26:28 2017 +0000
+++ b/sys/dev/usb/usbdi.c       Thu Oct 19 05:39:22 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: usbdi.c,v 1.173 2017/06/01 02:45:12 chs Exp $  */
+/*     $NetBSD: usbdi.c,v 1.174 2017/10/19 05:39:22 skrll Exp $        */
 
 /*
  * Copyright (c) 1998, 2012, 2015 The NetBSD Foundation, Inc.
@@ -32,7 +32,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: usbdi.c,v 1.173 2017/06/01 02:45:12 chs Exp $");
+__KERNEL_RCSID(0, "$NetBSD: usbdi.c,v 1.174 2017/10/19 05:39:22 skrll Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_usb.h"
@@ -856,7 +856,7 @@
 
 /*** Internal routines ***/
 
-/* Dequeue all pipe operations, called at splusb(). */
+/* Dequeue all pipe operations, called with bus lock held. */
 Static usbd_status
 usbd_ar_pipe(struct usbd_pipe *pipe)
 {
@@ -999,7 +999,8 @@
            xfer, pipe, pipe->up_running, xfer->ux_timeout);
 
        KASSERT(mutex_owned(pipe->up_dev->ud_bus->ub_lock));
-       KASSERT(xfer->ux_state == XFER_BUSY);
+       KASSERTMSG(xfer->ux_state == XFER_BUSY, "xfer %p state is %x", xfer,
+           xfer->ux_state);
 
 #ifdef DIAGNOSTIC
        xfer->ux_state = XFER_ONQU;