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add __USE() for unused volatile variables, so that we generate the same code.

This commit is contained in:
christos 2013-11-04 16:53:09 +00:00
parent 50d0979a7a
commit 188063a297
3 changed files with 10 additions and 6 deletions
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6
sys/dev/tc/mfb.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: mfb.c,v 1.58 2012/01/11 21:12:36 macallan Exp $ */
/* $NetBSD: mfb.c,v 1.59 2013/11/04 16:53:09 christos Exp $ */
/*-
* Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
@ -30,7 +30,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: mfb.c,v 1.58 2012/01/11 21:12:36 macallan Exp $");
__KERNEL_RCSID(0, "$NetBSD: mfb.c,v 1.59 2013/11/04 16:53:09 christos Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -260,6 +260,7 @@ mfbattach(device_t parent, device_t self, void *aux)
/* clear any pending interrupts */
*(uint8_t *)((char *)ri->ri_hw + MX_IREQ_OFFSET) = 0;
junk = *(uint8_t *)((char *)ri->ri_hw + MX_IREQ_OFFSET);
__USE(junk);
*(uint8_t *)((char *)ri->ri_hw + MX_IREQ_OFFSET) = 1;
waa.console = console;
@ -471,6 +472,7 @@ mfbintr(void *arg)
base = (void *)sc->sc_ri->ri_hw;
junk = *(uint8_t *)(base + MX_IREQ_OFFSET);
__USE(junk);
#if 0
*(uint8_t *)(base + MX_IREQ_OFFSET) = 0;
#endif

5
sys/dev/tc/px.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: px.c,v 1.39 2012/10/27 17:18:38 chs Exp $ */
/* $NetBSD: px.c,v 1.40 2013/11/04 16:53:09 christos Exp $ */
/*-
* Copyright (c) 1999, 2000, 2001 The NetBSD Foundation, Inc.
@ -34,7 +34,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: px.c,v 1.39 2012/10/27 17:18:38 chs Exp $");
__KERNEL_RCSID(0, "$NetBSD: px.c,v 1.40 2013/11/04 16:53:09 christos Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -344,6 +344,7 @@ px_pbuf_post(struct stic_info *si, uint32_t *buf)
sr->sr_ipdvint = STIC_INT_P_WE;
tc_wmb();
junk = *poll;
__USE(junk);
return (0);
}
DELAY(STAMP_DELAY);

5
sys/dev/tc/pxg.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: pxg.c,v 1.34 2012/03/13 18:40:34 elad Exp $ */
/* $NetBSD: pxg.c,v 1.35 2013/11/04 16:53:09 christos Exp $ */
/*-
* Copyright (c) 1999, 2000, 2001 The NetBSD Foundation, Inc.
@ -35,7 +35,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: pxg.c,v 1.34 2012/03/13 18:40:34 elad Exp $");
__KERNEL_RCSID(0, "$NetBSD: pxg.c,v 1.35 2013/11/04 16:53:09 christos Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -338,6 +338,7 @@ pxg_pbuf_post(struct stic_info *si, uint32_t *buf)
sr->sr_ipdvint = STIC_INT_P_WE;
tc_wmb();
junk = *poll;
__USE(junk);
return (0);
}
DELAY(STAMP_DELAY);