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[src/netbsd-9]: src/sys/dev/pci Pull up following revision(s) (requested by j...
details: https://anonhg.NetBSD.org/src/rev/49cfc2cfa365
branches: netbsd-9
changeset: 1001000:49cfc2cfa365
user: martin <martin%NetBSD.org@localhost>
date: Tue Oct 15 19:33:23 2019 +0000
description:
Pull up following revision(s) (requested by jmcneill in ticket #331):
sys/dev/pci/pci.c: revision 1.155
The PCI Local Bus Specification says that we should probe devices by
reading PCI_ID_REG. pci_enumerate_bus was incorrectly reading PCI_BHLC_REG
first, which surprisingly has worked for the past 16 years. Unfortunately,
this undefined behavior does the wrong thing on Amazon's Annapurna Labs
PCIe host controller.
diffstat:
sys/dev/pci/pci.c | 12 ++++++------
1 files changed, 6 insertions(+), 6 deletions(-)
diffs (40 lines):
diff -r b8d860884604 -r 49cfc2cfa365 sys/dev/pci/pci.c
--- a/sys/dev/pci/pci.c Tue Oct 15 19:30:50 2019 +0000
+++ b/sys/dev/pci/pci.c Tue Oct 15 19:33:23 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: pci.c,v 1.154 2018/12/15 05:38:45 msaitoh Exp $ */
+/* $NetBSD: pci.c,v 1.154.4.1 2019/10/15 19:33:23 martin Exp $ */
/*
* Copyright (c) 1995, 1996, 1997, 1998
@@ -36,7 +36,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: pci.c,v 1.154 2018/12/15 05:38:45 msaitoh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pci.c,v 1.154.4.1 2019/10/15 19:33:23 martin Exp $");
#ifdef _KERNEL_OPT
#include "opt_pci.h"
@@ -723,10 +723,6 @@
tag = pci_make_tag(pc, sc->sc_bus, device, 0);
- bhlcr = pci_conf_read(pc, tag, PCI_BHLC_REG);
- if (PCI_HDRTYPE_TYPE(bhlcr) > 2)
- continue;
-
id = pci_conf_read(pc, tag, PCI_ID_REG);
/* Invalid vendor ID value? */
@@ -736,6 +732,10 @@
if (PCI_VENDOR(id) == 0)
continue;
+ bhlcr = pci_conf_read(pc, tag, PCI_BHLC_REG);
+ if (PCI_HDRTYPE_TYPE(bhlcr) > 2)
+ continue;
+
qd = pci_lookup_quirkdata(PCI_VENDOR(id), PCI_PRODUCT(id));
if (qd != NULL &&
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