[PATCH] usb/host-libusb: Check for USBDEVFS_GET_SPEED ioctl support

[Sai Pavan Boddu]

Fixes compilation issue with older kernels, below is the error which is
fixed.

hw/usb/host-libusb.c:954:32: error: ‘USBDEVFS_GET_SPEED’ undeclared
(first use in this function)
         int rc = ioctl(hostfd, USBDEVFS_GET_SPEED, NULL);

Signed-off-by: Sai Pavan Boddu <sai.pavan.boddu@xilinx.com>
---
 hw/usb/host-libusb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/usb/host-libusb.c b/hw/usb/host-libusb.c
index 08604f7..c30d450 100644
--- a/hw/usb/host-libusb.c
+++ b/hw/usb/host-libusb.c
@@ -942,7 +942,7 @@ static int usb_host_open(USBHostDevice *s, libusb_device 
*dev, int hostfd)
     usb_host_ep_update(s);
 
     libusb_speed = libusb_get_device_speed(dev);
-#ifdef CONFIG_LINUX
+#if defined(CONFIG_LINUX) && defined(USBDEVFS_GET_SPEED)
     if (hostfd && libusb_speed == 0) {
         /*
          * Workaround libusb bug: libusb_get_device_speed() does not
-- 
2.7.4