Patch "Revert "xhci: Limit USB2 port wake support for AMD Promontory hosts"" has been added to the 4.9-stable tree

Patch "Revert "xhci: Limit USB2 port wake support for AMD Promontory hosts"" has been added to the 4.9-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    Revert "xhci: Limit USB2 port wake support for AMD Promontory hosts"

to the 4.9-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:
     revert-xhci-limit-usb2-port-wake-support-for-amd-promontory-hosts.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From bcd6a7aa13800afc1418e6b29d944d882214939a Mon Sep 17 00:00:00 2001
From: Kai-Heng Feng <kai.heng.feng@canonical.com>
Date: Mon, 18 Sep 2017 17:39:19 +0300
Subject: Revert "xhci: Limit USB2 port wake support for AMD Promontory hosts"

From: Kai-Heng Feng <kai.heng.feng@canonical.com>

commit bcd6a7aa13800afc1418e6b29d944d882214939a upstream.

This reverts commit dec08194ffeccfa1cf085906b53d301930eae18f.

Commit dec08194ffec ("xhci: Limit USB2 port wake support for AMD Promontory
hosts") makes all high speed USB ports on ASUS PRIME B350M-A cease to
function after enabling runtime PM.

All boards with this chipsets will be affected, so revert the commit.

The original patch was added to stable 4.9, 4.11 and 4.12 and needs
to reverted from there as well

Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/usb/host/xhci-hub.c |    3 ---
 drivers/usb/host/xhci-pci.c |   12 ------------
 drivers/usb/host/xhci.h     |    2 +-
 3 files changed, 1 insertion(+), 16 deletions(-)

--- a/drivers/usb/host/xhci-hub.c
+++ b/drivers/usb/host/xhci-hub.c
@@ -1360,9 +1360,6 @@ int xhci_bus_suspend(struct usb_hcd *hcd
 				t2 |= PORT_WKOC_E | PORT_WKCONN_E;
 				t2 &= ~PORT_WKDISC_E;
 			}
-			if ((xhci->quirks & XHCI_U2_DISABLE_WAKE) &&
-			    (hcd->speed < HCD_USB3))
-				t2 &= ~PORT_WAKE_BITS;
 		} else
 			t2 &= ~PORT_WAKE_BITS;
 
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -54,11 +54,6 @@
 #define PCI_DEVICE_ID_INTEL_APL_XHCI			0x5aa8
 #define PCI_DEVICE_ID_INTEL_DNV_XHCI			0x19d0
 
-#define PCI_DEVICE_ID_AMD_PROMONTORYA_4			0x43b9
-#define PCI_DEVICE_ID_AMD_PROMONTORYA_3			0x43ba
-#define PCI_DEVICE_ID_AMD_PROMONTORYA_2			0x43bb
-#define PCI_DEVICE_ID_AMD_PROMONTORYA_1			0x43bc
-
 #define PCI_DEVICE_ID_ASMEDIA_1042A_XHCI		0x1142
 
 static const char hcd_name[] = "xhci_hcd";
@@ -142,13 +137,6 @@ static void xhci_pci_quirks(struct devic
 	if (pdev->vendor == PCI_VENDOR_ID_AMD)
 		xhci->quirks |= XHCI_TRUST_TX_LENGTH;
 
-	if ((pdev->vendor == PCI_VENDOR_ID_AMD) &&
-		((pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_4) ||
-		(pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_3) ||
-		(pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_2) ||
-		(pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_1)))
-		xhci->quirks |= XHCI_U2_DISABLE_WAKE;
-
 	if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
 		xhci->quirks |= XHCI_LPM_SUPPORT;
 		xhci->quirks |= XHCI_INTEL_HOST;
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1660,7 +1660,7 @@ struct xhci_hcd {
 /* For controller with a broken Port Disable implementation */
 #define XHCI_BROKEN_PORT_PED	(1 << 25)
 #define XHCI_LIMIT_ENDPOINT_INTERVAL_7	(1 << 26)
-#define XHCI_U2_DISABLE_WAKE	(1 << 27)
+/* Reserved. It was XHCI_U2_DISABLE_WAKE */
 #define XHCI_ASMEDIA_MODIFY_FLOWCONTROL	(1 << 28)
 
 	unsigned int		num_active_eps;


Patches currently in stable-queue which might be from kai.heng.feng@canonical.com are

queue-4.9/revert-xhci-limit-usb2-port-wake-support-for-amd-promontory-hosts.patch