usb: xhci: check usb2 port capabilities before adding hw link PM support

Hardware link powermanagement in usb2 is a per-port capability.
Previously support for hw lpm was enabled for all ports if any usb2 port supported it.

Now instead cache the capability values and check them for each port individually

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index d62ebca1e91c..66b048a64ee0 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1532,6 +1532,9 @@ struct xhci_hcd {
         unsigned                sw_lpm_support:1;
         /* support xHCI 1.0 spec USB2 hardware LPM */
         unsigned                hw_lpm_support:1;
+        /* cached usb2 extened protocol capabilites */
+        u32                     *ext_caps;
+        unsigned int            num_ext_caps;
         /* Compliance Mode Recovery Data */
         struct timer_list       comp_mode_recovery_timer;
         u32                     port_status_u0;