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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>
This commit is contained in:
Mathias Nyman 2018-04-19 19:05:52 +03:00 committed by Greg Kroah-Hartman
parent 013eedb8c5
commit a2d49572e1
1 changed files with 5 additions and 0 deletions
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5
drivers/usb/core/hcd.c
View File

@ -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;