[src/trunk]: src/sys/dev/usb disable kpreempt around softint_schedule(). fix...

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

details:   https://anonhg.NetBSD.org/src/rev/f47729349b4a
branches:  trunk
changeset: 345088:f47729349b4a
user:      mrg <mrg%NetBSD.org@localhost>
date:      Sat May 07 08:09:43 2016 +0000

description:
disable kpreempt around softint_schedule().  fixes playing on umidi.

diffstat:

 sys/dev/usb/umidi.c |  6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diffs (28 lines):

diff -r 599a65c1c5a9 -r f47729349b4a sys/dev/usb/umidi.c
--- a/sys/dev/usb/umidi.c       Sat May 07 06:47:44 2016 +0000
+++ b/sys/dev/usb/umidi.c       Sat May 07 08:09:43 2016 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: umidi.c,v 1.69 2016/04/23 10:15:32 skrll Exp $ */
+/*     $NetBSD: umidi.c,v 1.70 2016/05/07 08:09:43 mrg Exp $   */
 
 /*
  * Copyright (c) 2001, 2012, 2014 The NetBSD Foundation, Inc.
@@ -32,7 +32,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: umidi.c,v 1.69 2016/04/23 10:15:32 skrll Exp $");
+__KERNEL_RCSID(0, "$NetBSD: umidi.c,v 1.70 2016/05/07 08:09:43 mrg Exp $");
 
 #include <sys/types.h>
 #include <sys/param.h>
@@ -1786,7 +1786,9 @@
                 * before starting the USB transfer, and send a longer one.
                 */
                ep->soliciting = 1;
+               kpreempt_disable();
                softint_schedule(ep->solicit_cookie);
+               kpreempt_enable();
        }
 
        if (--sc->sc_refcnt < 0)