Patch "x86/PCI: Use host bridge _CRS info on Foxconn K8M890-8237A" has been added to the 4.0-stable tree
Subsystems (4)
This is a note to let you know that I've just added the patch titled
x86/PCI: Use host bridge _CRS info on Foxconn K8M890-8237A
to the 4.0-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-use-host-bridge-_crs-info-on-foxconn-k8m890-8237a.patch
and it can be found in the queue-4.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.
Quoted 1 line
From
1dace0116d0b05c967d94644fc4dfe96be2ecd3dMon Sep 17 00:00:00 2001
From: Bjorn Helgaas <[email protected]>
Date: Tue, 9 Jun 2015 18:54:07 -0500
Subject: x86/PCI: Use host bridge _CRS info on Foxconn K8M890-8237A
From: Bjorn Helgaas <[email protected]>
commit 1dace0116d0b05c967d94644fc4dfe96be2ecd3d upstream.
The Foxconn K8M890-8237A has two PCI host bridges, and we can't assign resources correctly without the information from _CRS that tells us which address ranges are claimed by which bridge. In the bugs mentioned below, we incorrectly assign a sound card address (this example is from 1033299):
bus: 00 index 2 [mem 0x80000000-0xfcffffffff]
ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-7f])
pci_root PNP0A08:00: host bridge window [mem 0x80000000-0xbfefffff] (ignored)
pci_root PNP0A08:00: host bridge window [mem 0xc0000000-0xdfffffff] (ignored)
pci_root PNP0A08:00: host bridge window [mem 0xf0000000-0xfebfffff] (ignored)
ACPI: PCI Root Bridge [PCI1] (domain 0000 [bus 80-ff])
pci_root PNP0A08:01: host bridge window [mem 0xbff00000-0xbfffffff] (ignored)
pci 0000:80:01.0: [1106:3288] type 0 class 0x000403
pci 0000:80:01.0: reg 10: [mem 0xbfffc000-0xbfffffff 64bit]
pci 0000:80:01.0: address space collision: [mem 0xbfffc000-0xbfffffff 64bit] conflicts with PCI Bus #00 [mem 0x80000000-0xfcffffffff] pci 0000:80:01.0: BAR 0: assigned [mem 0xfd00000000-0xfd00003fff 64bit]
BUG: unable to handle kernel paging request at ffffc90000378000 IP: [<ffffffffa0345f63>] azx_create+0x37c/0x822 [snd_hda_intel]
We assigned 0xfd_0000_0000, but that is not in any of the host bridge windows, and the sound card doesn't work.
Turn on pci=use_crs automatically for this system.
--- arch/x86/pci/acpi.c | 11 +++++++++++ 1 file changed, 11 insertions(+)
arch/x86/pci/acpi.c +11 -0
@@ -81,6 +81,17 @@ static const struct dmi_system_id pci_cr DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies, LTD"), }, }, +/* https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/931368 */ +/* https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1033299 */ + { + .callback = set_use_crs, + .ident = "Foxconn K8M890-8237A", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "Foxconn"), + DMI_MATCH(DMI_BOARD_NAME, "K8M890-8237A"), + DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies, LTD"), + }, + }, /* Now for the blacklist.. */
Patches currently in stable-queue which might be from [email protected] are
queue-4.0/x86-pci-use-host-bridge-_crs-info-on-systems-with-32-bit-addressing.patch queue-4.0/x86-pci-use-host-bridge-_crs-info-on-foxconn-k8m890-8237a.patch