This is a note to let you know that I've just added the patch titled
PCI: Mark Atheros QCA6174 to avoid bus reset
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-mark-atheros-qca6174-to-avoid-bus-reset.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 e3f4bd3462f6f796594ecc0dda7144ed2d1e5a26 Mon Sep 17 00:00:00 2001
From: Ingmar Klein <ingmar_klein@xxxxxx>
Date: Fri, 9 Apr 2021 11:26:33 +0200
Subject: PCI: Mark Atheros QCA6174 to avoid bus reset
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From: Ingmar Klein <ingmar_klein@xxxxxx>
commit e3f4bd3462f6f796594ecc0dda7144ed2d1e5a26 upstream.
When passing the Atheros QCA6174 through to a virtual machine, the VM hangs
at the point where the ath10k driver loads.
Add a quirk to avoid bus resets on this device, which avoids the hang.
[bhelgaas: commit log]
Link: https://lore.kernel.org/r/08982e05-b6e8-5a8d-24ab-da1488ee50a8@xxxxxx
Signed-off-by: Ingmar Klein <ingmar_klein@xxxxxx>
Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Reviewed-by: Pali Rohár <pali@xxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
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
@@ -3169,6 +3169,7 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_A
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x003c, quirk_no_bus_reset);
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0033, quirk_no_bus_reset);
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0034, quirk_no_bus_reset);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x003e, quirk_no_bus_reset);
/*
* Some TI KeyStone C667X devices do not support bus/hot reset. The PCIESS
Patches currently in stable-queue which might be from ingmar_klein@xxxxxx are
queue-4.4/pci-mark-atheros-qca6174-to-avoid-bus-reset.patch
