This is a note to let you know that I've just added the patch titled
usb: dwc3: pci: Allow Elkhart Lake to utilize DSM method for PM functionality
to the 4.19-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-dwc3-pci-allow-elkhart-lake-to-utilize-dsm-method-for-pm-functionality.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From a609ce2a13360d639b384b6ca783b38c1247f2db Mon Sep 17 00:00:00 2001
From: Raymond Tan <raymond.tan@xxxxxxxxx>
Date: Fri, 21 Aug 2020 16:11:01 +0300
Subject: usb: dwc3: pci: Allow Elkhart Lake to utilize DSM method for PM functionality
From: Raymond Tan <raymond.tan@xxxxxxxxx>
commit a609ce2a13360d639b384b6ca783b38c1247f2db upstream.
Similar to some other IA platforms, Elkhart Lake too depends on the
PMU register write to request transition of Dx power state.
Thus, we add the PCI_DEVICE_ID_INTEL_EHLLP to the list of devices that
shall execute the ACPI _DSM method during D0/D3 sequence.
[heikki.krogerus@xxxxxxxxxxxxxxx: included Fixes tag]
Fixes: dbb0569de852 ("usb: dwc3: pci: Add Support for Intel Elkhart Lake Devices")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Raymond Tan <raymond.tan@xxxxxxxxx>
Signed-off-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>
Signed-off-by: Felipe Balbi <balbi@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/dwc3/dwc3-pci.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/usb/dwc3/dwc3-pci.c
+++ b/drivers/usb/dwc3/dwc3-pci.c
@@ -149,7 +149,8 @@ static int dwc3_pci_quirks(struct dwc3_p
if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
if (pdev->device == PCI_DEVICE_ID_INTEL_BXT ||
- pdev->device == PCI_DEVICE_ID_INTEL_BXT_M) {
+ pdev->device == PCI_DEVICE_ID_INTEL_BXT_M ||
+ pdev->device == PCI_DEVICE_ID_INTEL_EHLLP) {
guid_parse(PCI_INTEL_BXT_DSM_GUID, &dwc->guid);
dwc->has_dsm_for_pm = true;
}
Patches currently in stable-queue which might be from raymond.tan@xxxxxxxxx are
queue-4.19/usb-dwc3-pci-allow-elkhart-lake-to-utilize-dsm-method-for-pm-functionality.patch
