This is a note to let you know that I've just added the patch titled
PCI: Add AMD GPU multi-function power dependencies
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-amd-gpu-multi-function-power-dependencies.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 60b78ed088ebe1a872ee1320b6c5ad6ee2c4bd9a Mon Sep 17 00:00:00 2001
From: Evan Quan <evan.quan@xxxxxxx>
Date: Fri, 3 Sep 2021 14:33:11 +0800
Subject: PCI: Add AMD GPU multi-function power dependencies
From: Evan Quan <evan.quan@xxxxxxx>
commit 60b78ed088ebe1a872ee1320b6c5ad6ee2c4bd9a upstream.
Some AMD GPUs have built-in USB xHCI and USB Type-C UCSI controllers with
power dependencies between the GPU and the other functions as in
6d2e369f0d4c ("PCI: Add NVIDIA GPU multi-function power dependencies").
Add device link support for the AMD integrated USB xHCI and USB Type-C UCSI
controllers.
Without this, runtime power management, including GPU resume and temp and
fan sensors don't work correctly.
Reported-at: https://gitlab.freedesktop.org/drm/amd/-/issues/1704
Link: https://lore.kernel.org/r/20210903063311.3606226-1-evan.quan@xxxxxxx
Signed-off-by: Evan Quan <evan.quan@xxxxxxx>
Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/pci/quirks.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -5394,7 +5394,7 @@ DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR
PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8, quirk_gpu_hda);
/*
- * Create device link for NVIDIA GPU with integrated USB xHCI Host
+ * Create device link for GPUs with integrated USB xHCI Host
* controller to VGA.
*/
static void quirk_gpu_usb(struct pci_dev *usb)
@@ -5403,9 +5403,11 @@ static void quirk_gpu_usb(struct pci_dev
}
DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
PCI_CLASS_SERIAL_USB, 8, quirk_gpu_usb);
+DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
+ PCI_CLASS_SERIAL_USB, 8, quirk_gpu_usb);
/*
- * Create device link for NVIDIA GPU with integrated Type-C UCSI controller
+ * Create device link for GPUs with integrated Type-C UCSI controller
* to VGA. Currently there is no class code defined for UCSI device over PCI
* so using UNKNOWN class for now and it will be updated when UCSI
* over PCI gets a class code.
@@ -5418,6 +5420,9 @@ static void quirk_gpu_usb_typec_ucsi(str
DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
PCI_CLASS_SERIAL_UNKNOWN, 8,
quirk_gpu_usb_typec_ucsi);
+DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
+ PCI_CLASS_SERIAL_UNKNOWN, 8,
+ quirk_gpu_usb_typec_ucsi);
/*
* Enable the NVIDIA GPU integrated HDA controller if the BIOS left it
Patches currently in stable-queue which might be from evan.quan@xxxxxxx are
queue-5.4/pci-add-amd-gpu-multi-function-power-dependencies.patch
