@@ -4507,26 +4507,13 @@ static int xhci_set_usb2_hardware_lpm(struct usb_hcd *hcd,
return 0;
}
-/* check if a usb2 port supports a given extened capability protocol
- * only USB2 ports extended protocol capability values are cached.
- * Return 1 if capability is supported
- */
-static bool xhci_check_usb2_port_capability(struct xhci_hcd *xhci, int portnum,
- unsigned capability)
-{
- struct xhci_port *port;
-
- port = xhci->usb2_rhub.ports[portnum];
-
- return !!(port->port_cap->protocol_caps & capability);
-}
-
static int xhci_update_device(struct usb_hcd *hcd, struct usb_device *udev)
{
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
- int portnum = udev->portnum - 1;
+ struct xhci_port *port;
+ u32 capability;
- if (hcd->speed >= HCD_USB3 || !udev->lpm_capable)
+ if (hcd->speed >= HCD_USB3 || !udev->lpm_capable || !xhci->hw_lpm_support)
return 0;
/* we only support lpm for non-hub device connected to root hub yet */
@@ -4534,14 +4521,14 @@ static int xhci_update_device(struct usb_hcd *hcd, struct usb_device *udev)
udev->descriptor.bDeviceClass == USB_CLASS_HUB)
return 0;
- if (xhci->hw_lpm_support == 1 &&
- xhci_check_usb2_port_capability(
- xhci, portnum, XHCI_HLC)) {
+ port = xhci->usb2_rhub.ports[udev->portnum - 1];
+ capability = port->port_cap->protocol_caps;
+
+ if (capability & XHCI_HLC) {
udev->usb2_hw_lpm_capable = 1;
udev->l1_params.timeout = XHCI_L1_TIMEOUT;
udev->l1_params.besl = XHCI_DEFAULT_BESL;
- if (xhci_check_usb2_port_capability(xhci, portnum,
- XHCI_BLC))
+ if (capability & XHCI_BLC)
udev->usb2_hw_lpm_besl_capable = 1;
}
This helper was only called from one function. Removing it both reduces lines of code and made it more readable. Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> --- drivers/usb/host/xhci.c | 29 ++++++++--------------------- 1 file changed, 8 insertions(+), 21 deletions(-)