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

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>

diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
index eb4312b..4a02c5c 100644 (file)
--- 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;
 

diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 2383344..c87ef38 100644 (file)
--- 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 device *dev, struct xhci_hcd *xhci)
        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;

diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index 5b137ec..836398a 100644 (file)
--- 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;