diff options
Diffstat (limited to 'drivers/usb/host/xhci.c')
| -rw-r--r-- | drivers/usb/host/xhci.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index efdf4c228b8c..899c0effb5d3 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -347,8 +347,8 @@ static int xhci_disable_interrupter(struct xhci_interrupter *ir) } /* interrupt moderation interval imod_interval in nanoseconds */ -static int xhci_set_interrupter_moderation(struct xhci_interrupter *ir, - u32 imod_interval) +int xhci_set_interrupter_moderation(struct xhci_interrupter *ir, + u32 imod_interval) { u32 imod; @@ -4525,6 +4525,20 @@ static int xhci_update_device(struct usb_hcd *hcd, struct usb_device *udev) struct xhci_port *port; u32 capability; + /* Check if USB3 device at root port is tunneled over USB4 */ + if (hcd->speed >= HCD_USB3 && !udev->parent->parent) { + port = xhci->usb3_rhub.ports[udev->portnum - 1]; + + udev->tunnel_mode = xhci_port_is_tunneled(xhci, port); + if (udev->tunnel_mode == USB_LINK_UNKNOWN) + dev_dbg(&udev->dev, "link tunnel state unknown\n"); + else if (udev->tunnel_mode == USB_LINK_TUNNELED) + dev_dbg(&udev->dev, "tunneled over USB4 link\n"); + else if (udev->tunnel_mode == USB_LINK_NATIVE) + dev_dbg(&udev->dev, "native USB 3.x link\n"); + return 0; + } + if (hcd->speed >= HCD_USB3 || !udev->lpm_capable || !xhci->hw_lpm_support) return 0; |