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Add a simple kvm integer toggle to control ugen priority and override

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the autoconf flags value.  This helps to change the priority at
runtime.  (XXX: is there a better way to do this?)
This commit is contained in:
pooka 2009-09-24 22:33:04 +00:00
parent 7d89931c36
commit 86e98a0103
1 changed files with 12 additions and 3 deletions
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15
sys/dev/usb/ugen.c
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@ -1,4 +1,4 @@
/* $NetBSD: ugen.c,v 1.104 2009/09/24 15:36:59 pooka Exp $ */
/* $NetBSD: ugen.c,v 1.105 2009/09/24 22:33:04 pooka Exp $ */
/*
* Copyright (c) 1998, 2004 The NetBSD Foundation, Inc.
@ -37,7 +37,7 @@
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ugen.c,v 1.104 2009/09/24 15:36:59 pooka Exp $");
__KERNEL_RCSID(0, "$NetBSD: ugen.c,v 1.105 2009/09/24 22:33:04 pooka Exp $");
#include "opt_ugen_bulk_ra_wb.h"
#include "opt_compat_netbsd.h"
@ -205,11 +205,20 @@ Static int ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx);
USB_DECLARE_DRIVER(ugen);
/* toggle to control attach priority. -1 means "let autoconf decide" */
int ugen_override = -1;
USB_MATCH(ugen)
{
USB_MATCH_START(ugen, uaa);
int override;
if (match->cf_flags & 1)
if (ugen_override != -1)
override = ugen_override;
else
override = match->cf_flags & 1;
if (override)
return (UMATCH_HIGHEST);
else if (uaa->usegeneric)
return (UMATCH_GENERIC);