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* FAILED: Patch "PCI: Increase D3 delay for AMD Renoir/Cezanne XHCI" failed to apply to 4.14-stable tree
@ 2021-08-24  2:58 Sasha Levin
  0 siblings, 0 replies; only message in thread
From: Sasha Levin @ 2021-08-24  2:58 UTC (permalink / raw)
  To: stable, hegel666
  Cc: Alex Deucher, Bjorn Helgaas, Mario Limonciello, Prike Liang,
	Shyam Sundar S K, linux-pci, linux-kernel

The patch below does not apply to the 4.14-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <>.


------------------ original commit in Linus's tree ------------------

From e0bff43220925b7e527f9d3bc9f5c624177c959e Mon Sep 17 00:00:00 2001
From: Marcin Bachry <>
Date: Wed, 21 Jul 2021 22:58:58 -0400
Subject: [PATCH] PCI: Increase D3 delay for AMD Renoir/Cezanne XHCI

The Renoir XHCI controller apparently doesn't resume reliably with the
standard D3hot-to-D0 delay.  Increase it to 20ms.

[Alex: I talked to the AMD USB hardware team and the AMD Windows team and
they are not aware of any HW errata or specific issues.  The HW works fine
in Windows.  I was told Windows uses a rather generous default delay of
100ms for PCI state transitions.]

Signed-off-by: Marcin Bachry <>
Signed-off-by: Alex Deucher <>
Signed-off-by: Bjorn Helgaas <>
Cc: Mario Limonciello <>
Cc: Prike Liang <>
Cc: Shyam Sundar S K <>
 drivers/pci/quirks.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 6d74386eadc2..ab3de1551b50 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -1900,6 +1900,7 @@ static void quirk_ryzen_xhci_d3hot(struct pci_dev *dev)
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x15e0, quirk_ryzen_xhci_d3hot);
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x15e1, quirk_ryzen_xhci_d3hot);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x1639, quirk_ryzen_xhci_d3hot);
 #ifdef CONFIG_X86_IO_APIC
 static int dmi_disable_ioapicreroute(const struct dmi_system_id *d)

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