1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c
index 00661d305143..4a6d3dd68572 100644
--- a/drivers/usb/host/pci-quirks.c
+++ b/drivers/usb/host/pci-quirks.c
@@ -847,6 +847,13 @@ void usb_enable_intel_xhci_ports(struct pci_dev *xhci_pdev)
         bool            ehci_found = false;
         struct pci_dev  *companion = NULL;
 
+        /* Sony VAIO t-series with subsystem device ID 90a8 is not capable of
+         * switching ports from EHCI to xHCI
+         */
+        if (xhci_pdev->subsystem_vendor == PCI_VENDOR_ID_SONY &&
+            xhci_pdev->subsystem_device == 0x90a8)
+                return;
+
         /* make sure an intel EHCI controller exists */
         for_each_pci_dev(companion) {
                 if (companion->class == PCI_CLASS_SERIAL_USB_EHCI &&