[src/trunk]: src/sys/dev/mca Remove uneeded bus_space_barrier() calls.

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

details:   https://anonhg.NetBSD.org/src/rev/4427a0dc25e8
branches:  trunk
changeset: 368448:4427a0dc25e8
user:      thorpej <thorpej%NetBSD.org@localhost>
date:      Tue Jul 12 02:06:07 2022 +0000

description:
Remove uneeded bus_space_barrier() calls.

diffstat:

 sys/dev/mca/if_elmc_mca.c |  17 ++---------------
 1 files changed, 2 insertions(+), 15 deletions(-)

diffs (78 lines):

diff -r d63f8ac95e64 -r 4427a0dc25e8 sys/dev/mca/if_elmc_mca.c
--- a/sys/dev/mca/if_elmc_mca.c Tue Jul 12 02:03:57 2022 +0000
+++ b/sys/dev/mca/if_elmc_mca.c Tue Jul 12 02:06:07 2022 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_elmc_mca.c,v 1.32 2016/07/14 04:00:45 msaitoh Exp $ */
+/*     $NetBSD: if_elmc_mca.c,v 1.33 2022/07/12 02:06:07 thorpej Exp $ */
 
 /*-
  * Copyright (c) 2001 The NetBSD Foundation, Inc.
@@ -39,7 +39,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_elmc_mca.c,v 1.32 2016/07/14 04:00:45 msaitoh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_elmc_mca.c,v 1.33 2022/07/12 02:06:07 thorpej Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -234,8 +234,6 @@
            (u_long) sc->iscp);
 
        /* flush setup of pointers, check if chip answers */
-       bus_space_barrier(sc->bt, sc->bh, 0, sc->sc_msize,
-                         BUS_SPACE_BARRIER_WRITE);
        if (!i82586_proberam(sc)) {
                aprint_error_dev(self, "can't talk to i82586!\n");
 
@@ -282,9 +280,6 @@
        int dribble;
        u_int8_t* bptr = dst;
 
-       bus_space_barrier(sc->bt, sc->bh, offset, size,
-                         BUS_SPACE_BARRIER_READ);
-
        if (offset % 2) {
                *bptr = bus_space_read_1(sc->bt, sc->bh, offset);
                offset++; bptr++; size--;
@@ -306,8 +301,6 @@
     size_t size)
 {
        int dribble;
-       int osize = size;
-       int ooffset = offset;
        const u_int8_t* bptr = src;
 
        if (offset % 2) {
@@ -323,15 +316,11 @@
                offset += size - 1;
                bus_space_write_1(sc->bt, sc->bh, offset, *bptr);
        }
-
-       bus_space_barrier(sc->bt, sc->bh, ooffset, osize,
-                         BUS_SPACE_BARRIER_WRITE);
 }
 
 static u_int16_t
 elmc_mca_read_16 (struct ie_softc *sc, int offset)
 {
-       bus_space_barrier(sc->bt, sc->bh, offset, 2, BUS_SPACE_BARRIER_READ);
         return bus_space_read_2(sc->bt, sc->bh, offset);
 }
 
@@ -339,7 +328,6 @@
 elmc_mca_write_16 (struct ie_softc *sc, int offset, u_int16_t value)
 {
         bus_space_write_2(sc->bt, sc->bh, offset, value);
-       bus_space_barrier(sc->bt, sc->bh, offset, 2, BUS_SPACE_BARRIER_WRITE);
 }
 
 static void
@@ -347,7 +335,6 @@
 {
         bus_space_write_4(sc->bt, sc->bh, offset, addr +
            (u_long) sc->sc_maddr - (u_long) sc->sc_iobase);
-       bus_space_barrier(sc->bt, sc->bh, offset, 4, BUS_SPACE_BARRIER_WRITE);
 }
 
 /*