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do some mbs before a config read/write

This commit is contained in:
mjacob 1998-04-30 04:25:22 +00:00
parent 34cedede44
commit e3904356a4
1 changed files with 4 additions and 2 deletions
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6
sys/arch/alpha/pci/mcpcia_pci.c
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@ -1,4 +1,4 @@
/* $NetBSD: mcpcia_pci.c,v 1.1 1998/04/15 00:50:14 mjacob Exp $ */
/* $NetBSD: mcpcia_pci.c,v 1.2 1998/04/30 04:25:22 mjacob Exp $ */
/*
* Copyright (c) 1998 by Matthew Jacob
@ -32,7 +32,7 @@
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
__KERNEL_RCSID(0, "$NetBSD: mcpcia_pci.c,v 1.1 1998/04/15 00:50:14 mjacob Exp $");
__KERNEL_RCSID(0, "$NetBSD: mcpcia_pci.c,v 1.2 1998/04/30 04:25:22 mjacob Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -144,6 +144,7 @@ mcpcia_conf_read(cpv, tag, offset)
#endif
dp = (pcireg_t *)KV(paddr);
alpha_mb();
if (badaddr(dp, sizeof (*dp)) == 0) {
data = *dp;
}
@ -181,6 +182,7 @@ mcpcia_conf_write(cpv, tag, offset, data)
#endif
dp = (pcireg_t *)KV(paddr);
alpha_mb();
*dp = data;
alpha_mb();
}