This is a note to let you know that I've just added the patch titled
PCI: Limit config space size for Netronome NFP4000
to the 4.4-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:
pci-limit-config-space-size-for-netronome-nfp4000.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From c2e771b02792d222cbcd9617fe71482a64f52647 Mon Sep 17 00:00:00 2001
From: Simon Horman <simon.horman@xxxxxxxxxxxxx>
Date: Fri, 11 Dec 2015 11:30:12 +0900
Subject: PCI: Limit config space size for Netronome NFP4000
From: Simon Horman <simon.horman@xxxxxxxxxxxxx>
commit c2e771b02792d222cbcd9617fe71482a64f52647 upstream.
Like the NFP6000, the NFP4000 as an erratum where reading/writing to PCI
config space addresses above 0x600 can cause the NFP to generate PCIe
completion timeouts.
Limit the NFP4000's PF's config space size to 0x600 bytes as is already
done for the NFP6000.
The NFP4000's VF is 0x6004 (PCI_DEVICE_ID_NETRONOME_NFP6000_VF), the same
device ID as the NFP6000's VF. Thus, its config space is already limited
by the existing use of quirk_nfp6000().
Signed-off-by: Simon Horman <simon.horman@xxxxxxxxxxxxx>
Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/pci/quirks.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -295,6 +295,7 @@ static void quirk_nfp6000(struct pci_dev
{
dev->cfg_size = 0x600;
}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP4000, quirk_nfp6000);
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP6000, quirk_nfp6000);
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP6000_VF, quirk_nfp6000);
Patches currently in stable-queue which might be from simon.horman@xxxxxxxxxxxxx are
queue-4.4/pci-limit-config-space-size-for-netronome-nfp6000-family.patch
queue-4.4/pci-add-netronome-nfp4000-pf-device-id.patch
queue-4.4/pci-support-pcie-devices-with-short-cfg_size.patch
queue-4.4/pci-add-netronome-vendor-and-device-ids.patch
queue-4.4/pci-limit-config-space-size-for-netronome-nfp4000.patch
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