[src/trunk]: src/sys/dev/acpi According to "PCI Express Base Specification Re...

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

details:   https://anonhg.NetBSD.org/src/rev/17f6230aa940
branches:  trunk
changeset: 346413:17f6230aa940
user:      hannken <hannken%NetBSD.org@localhost>
date:      Tue Jul 12 09:45:34 2016 +0000

description:
According to "PCI Express Base Specification Revision 3.0" from
November 10, 2010, section 7.9.1 an Extended Capability header
with value 0:0:0 represents the absence of Extended Capabilities.

diffstat:

 sys/dev/acpi/acpi_mcfg.c |  6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diffs (27 lines):

diff -r ce509de3c7cb -r 17f6230aa940 sys/dev/acpi/acpi_mcfg.c
--- a/sys/dev/acpi/acpi_mcfg.c  Tue Jul 12 09:29:32 2016 +0000
+++ b/sys/dev/acpi/acpi_mcfg.c  Tue Jul 12 09:45:34 2016 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: acpi_mcfg.c,v 1.3 2016/07/12 09:29:32 hannken Exp $    */
+/*     $NetBSD: acpi_mcfg.c,v 1.4 2016/07/12 09:45:34 hannken Exp $    */
 
 /*-
  * Copyright (C) 2015 NONAKA Kimihiro <nonaka%NetBSD.org@localhost>
@@ -26,7 +26,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: acpi_mcfg.c,v 1.3 2016/07/12 09:29:32 hannken Exp $");
+__KERNEL_RCSID(0, "$NetBSD: acpi_mcfg.c,v 1.4 2016/07/12 09:45:34 hannken Exp $");
 
 #include <sys/param.h>
 #include <sys/device.h>
@@ -490,7 +490,7 @@
 
        /* Probe extended configuration space. */
        if (((reg = pci_conf_read(pc, tag, PCI_CONF_SIZE)) == (pcireg_t)-1) ||
-           (alias = acpimcfg_ext_conf_is_aliased(pc, tag))) {
+           (reg == 0) || (alias = acpimcfg_ext_conf_is_aliased(pc, tag))) {
                aprint_debug_dev(acpi_sc->sc_dev,
                    "MCFG: %03d:%02d:%d: invalid config space "
                    "(cfg[0x%03x]=0x%08x, alias=%s)\n", bus, dev, func,