This is a note to let you know that I've just added the patch titled
PCI: Add ACS quirk for Zhaoxin multi-function devices
to the 5.4-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-add-acs-quirk-for-zhaoxin-multi-function-devices.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 0325837c51cb7c9a5bd3e354ac0c0cda0667d50e Mon Sep 17 00:00:00 2001
From: Raymond Pang <RaymondPang-oc@xxxxxxxxxxx>
Date: Fri, 27 Mar 2020 17:11:47 +0800
Subject: PCI: Add ACS quirk for Zhaoxin multi-function devices
From: Raymond Pang <RaymondPang-oc@xxxxxxxxxxx>
commit 0325837c51cb7c9a5bd3e354ac0c0cda0667d50e upstream.
Some Zhaoxin endpoints are implemented as multi-function devices without an
ACS capability, but they actually don't support peer-to-peer transactions.
Add ACS quirks to declare DMA isolation.
Link: https://lore.kernel.org/r/20200327091148.5190-3-RaymondPang-oc@xxxxxxxxxxx
Signed-off-by: Raymond Pang <RaymondPang-oc@xxxxxxxxxxx>
Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/pci/quirks.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -4759,6 +4759,10 @@ static const struct pci_dev_acs_enabled
{ PCI_VENDOR_ID_BROADCOM, 0xD714, pci_quirk_brcm_acs },
/* Amazon Annapurna Labs */
{ PCI_VENDOR_ID_AMAZON_ANNAPURNA_LABS, 0x0031, pci_quirk_al_acs },
+ /* Zhaoxin multi-function devices */
+ { PCI_VENDOR_ID_ZHAOXIN, 0x3038, pci_quirk_mf_endpoint_acs },
+ { PCI_VENDOR_ID_ZHAOXIN, 0x3104, pci_quirk_mf_endpoint_acs },
+ { PCI_VENDOR_ID_ZHAOXIN, 0x9083, pci_quirk_mf_endpoint_acs },
{ 0 }
};
Patches currently in stable-queue which might be from RaymondPang-oc@xxxxxxxxxxx are
queue-5.4/pci-add-acs-quirk-for-zhaoxin-multi-function-devices.patch
queue-5.4/pci-add-acs-quirk-for-zhaoxin-root-downstream-ports.patch
