This is a note to let you know that I've just added the patch titled
x86/PCI: Ignore _CRS on Supermicro X8DTH-i/6/iF/6F
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
x86-pci-ignore-_crs-on-supermicro-x8dth-i-6-if-6f.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 89e9f7bcd8744ea25fcf0ac671b8d72c10d7d790 Mon Sep 17 00:00:00 2001
From: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Date: Wed, 28 Dec 2016 14:55:16 -0600
Subject: x86/PCI: Ignore _CRS on Supermicro X8DTH-i/6/iF/6F
From: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
commit 89e9f7bcd8744ea25fcf0ac671b8d72c10d7d790 upstream.
Martin reported that the Supermicro X8DTH-i/6/iF/6F advertises incorrect
host bridge windows via _CRS:
pci_root PNP0A08:00: host bridge window [io 0xf000-0xffff]
pci_root PNP0A08:01: host bridge window [io 0xf000-0xffff]
Both bridges advertise the 0xf000-0xffff window, which cannot be correct.
Work around this by ignoring _CRS on this system. The downside is that we
may not assign resources correctly to hot-added PCI devices (if they are
possible on this system).
Link: https://bugzilla.kernel.org/show_bug.cgi?id=42606
Reported-by: Martin Burnicki <martin.burnicki@xxxxxxxxxxx>
Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/x86/pci/acpi.c | 10 ++++++++++
1 file changed, 10 insertions(+)
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -114,6 +114,16 @@ static const struct dmi_system_id pci_cr
DMI_MATCH(DMI_BIOS_VERSION, "6JET85WW (1.43 )"),
},
},
+ /* https://bugzilla.kernel.org/show_bug.cgi?id=42606 */
+ {
+ .callback = set_nouse_crs,
+ .ident = "Supermicro X8DTH",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Supermicro"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "X8DTH-i/6/iF/6F"),
+ DMI_MATCH(DMI_BIOS_VERSION, "2.0a"),
+ },
+ },
/* https://bugzilla.kernel.org/show_bug.cgi?id=15362 */
{
Patches currently in stable-queue which might be from bhelgaas@xxxxxxxxxx are
queue-4.9/x86-pci-ignore-_crs-on-supermicro-x8dth-i-6-if-6f.patch
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