diff mbox series

hw: usb: fix break on older kernel headers that miss USBDEVFS_GET_SPEED

Message ID 20201127183840.10315-1-info@metux.net
State New
Headers show
Series hw: usb: fix break on older kernel headers that miss USBDEVFS_GET_SPEED | expand

Commit Message

Enrico Weigelt, metux IT consult Nov. 27, 2020, 6:38 p.m. UTC
Older kernel headers lack the USBDEVFS_GET_SPEED ioctl. Qemu can easily
work without it, but the api version check isn't sufficient. Instead
time consuming bisection, for finding the really correct version, just
change the ifdef to look for the symbol, instead of api version.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
---
 hw/usb/host-libusb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/hw/usb/host-libusb.c b/hw/usb/host-libusb.c
index b950501d10..c894a4b148 100644
--- a/hw/usb/host-libusb.c
+++ b/hw/usb/host-libusb.c
@@ -941,7 +941,7 @@  static int usb_host_open(USBHostDevice *s, libusb_device *dev, int hostfd)
     usb_host_ep_update(s);
 
     libusb_speed = libusb_get_device_speed(dev);
-#if LIBUSB_API_VERSION >= 0x01000107 && defined(CONFIG_LINUX)
+#ifdef USBDEVFS_GET_SPEED
     if (hostfd && libusb_speed == 0) {
         /*
          * Workaround libusb bug: libusb_get_device_speed() does not