From: Gerd Hoffmann <kraxel@redhat.com>

Fixes build failures with old kernels (USBDEVFS_GET_SPEED missing),
on the assumtion that distros with old kernels also have old libusb.

Reported-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20200902081445.3291-1-kraxel@redhat.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 08604f787fd..c5d38cb09c0 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 LIBUSB_API_VERSION >= 0x01000107 && defined(CONFIG_LINUX)
     if (hostfd && libusb_speed == 0) {
         /*
          * Workaround libusb bug: libusb_get_device_speed() does not
-- 
2.20.1