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authorMathias Nyman <mathias.nyman@linux.intel.com>2018-04-19 19:05:52 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-04-22 16:19:26 +0200
commita2d49572e11ef54f854f6b7db48846286b1676d5 (patch)
tree9d03b14a74286c01be5e1b4c39b574bd568623dc /drivers/usb/core/hcd.c
parent013eedb8c56e55549c45df19ca56a029cc804028 (diff)
usb: set root hub lane counts
Set the the rx_lane and tx_lane count to "2" for USB 3.2 hosts. For all other older hosts set the default lane counts to 1 Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/core/hcd.c')
-rw-r--r--drivers/usb/core/hcd.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 5a799f84dcc2..ac5bcf449d7d 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -2793,6 +2793,9 @@ int usb_add_hcd(struct usb_hcd *hcd,
hcd->self.root_hub = rhdev;
mutex_unlock(&usb_port_peer_mutex);
+ rhdev->rx_lanes = 1;
+ rhdev->tx_lanes = 1;
+
switch (hcd->speed) {
case HCD_USB11:
rhdev->speed = USB_SPEED_FULL;
@@ -2807,6 +2810,8 @@ int usb_add_hcd(struct usb_hcd *hcd,
rhdev->speed = USB_SPEED_SUPER;
break;
case HCD_USB32:
+ rhdev->rx_lanes = 2;
+ rhdev->tx_lanes = 2;
case HCD_USB31:
rhdev->speed = USB_SPEED_SUPER_PLUS;
break;