This is a note to let you know that I've just added the patch titled
usb: pci-quirks: disable D3cold on xhci suspend for s2idle on AMD Renoir
to the 5.12-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:
usb-pci-quirks-disable-d3cold-on-xhci-suspend-for-s2idle-on-amd-renoir.patch
and it can be found in the queue-5.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From d1658268e43980c071dbffc3d894f6f6c4b6732a Mon Sep 17 00:00:00 2001
From: Mario Limonciello <mario.limonciello@xxxxxxx>
Date: Thu, 27 May 2021 10:45:34 -0500
Subject: usb: pci-quirks: disable D3cold on xhci suspend for s2idle on AMD Renoir
From: Mario Limonciello <mario.limonciello@xxxxxxx>
commit d1658268e43980c071dbffc3d894f6f6c4b6732a upstream.
The XHCI controller is required to enter D3hot rather than D3cold for AMD
s2idle on this hardware generation.
Otherwise, the 'Controller Not Ready' (CNR) bit is not being cleared by
host in resume and eventually this results in xhci resume failures during
the s2idle wakeup.
Link: https://lore.kernel.org/linux-usb/1612527609-7053-1-git-send-email-Prike.Liang@xxxxxxx/
Suggested-by: Prike Liang <Prike.Liang@xxxxxxx>
Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx>
Cc: stable <stable@xxxxxxxxxxxxxxx> # 5.11+
Link: https://lore.kernel.org/r/20210527154534.8900-1-mario.limonciello@xxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/host/xhci-pci.c | 7 ++++++-
drivers/usb/host/xhci.h | 1 +
2 files changed, 7 insertions(+), 1 deletion(-)
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -59,6 +59,7 @@
#define PCI_DEVICE_ID_INTEL_MAPLE_RIDGE_XHCI 0x1138
#define PCI_DEVICE_ID_INTEL_ALDER_LAKE_XHCI 0x461e
+#define PCI_DEVICE_ID_AMD_RENOIR_XHCI 0x1639
#define PCI_DEVICE_ID_AMD_PROMONTORYA_4 0x43b9
#define PCI_DEVICE_ID_AMD_PROMONTORYA_3 0x43ba
#define PCI_DEVICE_ID_AMD_PROMONTORYA_2 0x43bb
@@ -182,6 +183,10 @@ static void xhci_pci_quirks(struct devic
(pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_1)))
xhci->quirks |= XHCI_U2_DISABLE_WAKE;
+ if (pdev->vendor == PCI_VENDOR_ID_AMD &&
+ pdev->device == PCI_DEVICE_ID_AMD_RENOIR_XHCI)
+ xhci->quirks |= XHCI_BROKEN_D3COLD;
+
if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
xhci->quirks |= XHCI_LPM_SUPPORT;
xhci->quirks |= XHCI_INTEL_HOST;
@@ -539,7 +544,7 @@ static int xhci_pci_suspend(struct usb_h
* Systems with the TI redriver that loses port status change events
* need to have the registers polled during D3, so avoid D3cold.
*/
- if (xhci->quirks & XHCI_COMP_MODE_QUIRK)
+ if (xhci->quirks & (XHCI_COMP_MODE_QUIRK | XHCI_BROKEN_D3COLD))
pci_d3cold_disable(pdev);
if (xhci->quirks & XHCI_PME_STUCK_QUIRK)
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1892,6 +1892,7 @@ struct xhci_hcd {
#define XHCI_DISABLE_SPARSE BIT_ULL(38)
#define XHCI_SG_TRB_CACHE_SIZE_QUIRK BIT_ULL(39)
#define XHCI_NO_SOFT_RETRY BIT_ULL(40)
+#define XHCI_BROKEN_D3COLD BIT_ULL(41)
unsigned int num_active_eps;
unsigned int limit_active_eps;
Patches currently in stable-queue which might be from mario.limonciello@xxxxxxx are
queue-5.12/usb-pci-quirks-disable-d3cold-on-xhci-suspend-for-s2idle-on-amd-renoir.patch
