[src/netbsd-6-0]: src/sys/dev/acpi Pull up following revision(s) (requested b...

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

details:   https://anonhg.NetBSD.org/src/rev/2251e5527151
branches:  netbsd-6-0
changeset: 774687:2251e5527151
user:      riz <riz%NetBSD.org@localhost>
date:      Thu Nov 22 00:34:44 2012 +0000

description:
Pull up following revision(s) (requested by chs in ticket #682):
        sys/dev/acpi/acpi_pci_link.c: revision 1.19
re-enable the code to disable link devices at startup, ie. revert rev 1.3.
this fixes PCI interrupts on some systems (eg. HP XW9400) and we suspect that
the problems which led to the original change were caused by buggy early
implementations of ACPI, which are now ignored by date.

diffstat:

 sys/dev/acpi/acpi_pci_link.c |  6 ++----
 1 files changed, 2 insertions(+), 4 deletions(-)

diffs (32 lines):

diff -r f733ab51327b -r 2251e5527151 sys/dev/acpi/acpi_pci_link.c
--- a/sys/dev/acpi/acpi_pci_link.c      Tue Nov 20 23:30:33 2012 +0000
+++ b/sys/dev/acpi/acpi_pci_link.c      Thu Nov 22 00:34:44 2012 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: acpi_pci_link.c,v 1.18 2010/04/23 15:52:26 jruoho Exp $        */
+/*     $NetBSD: acpi_pci_link.c,v 1.18.20.1 2012/11/22 00:34:44 riz Exp $      */
 
 /*-
  * Copyright (c) 2002 Mitsuru IWASAKI <iwasaki%jp.freebsd.org@localhost>
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: acpi_pci_link.c,v 1.18 2010/04/23 15:52:26 jruoho Exp $");
+__KERNEL_RCSID(0, "$NetBSD: acpi_pci_link.c,v 1.18.20.1 2012/11/22 00:34:44 riz Exp $");
 
 #include <sys/param.h>
 #include <sys/malloc.h>
@@ -533,13 +533,11 @@
         * run _DIS (i.e., the method doesn't exist), assume the initial
         * IRQ was routed by the BIOS.
         */
-#if 0  /* XXX causes spontaneaous resets on some systems. Disabled for now. */
        if (ACPI_SUCCESS(AcpiEvaluateObject(sc->pl_handle, "_DIS", NULL,
            NULL)))
                for (i = 0; i < sc->pl_num_links; i++)
                        sc->pl_links[i].l_irq = PCI_INVALID_IRQ;
        else
-#endif
                for (i = 0; i < sc->pl_num_links; i++)
                        if (PCI_INTERRUPT_VALID(sc->pl_links[i].l_irq))
                                sc->pl_links[i].l_routed = TRUE;