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-rw-r--r--hw/usb/host-libusb.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/hw/usb/host-libusb.c b/hw/usb/host-libusb.c
index d2d161bc6e..032a0e4414 100644
--- a/hw/usb/host-libusb.c
+++ b/hw/usb/host-libusb.c
@@ -143,6 +143,12 @@ static void usb_host_attach_kernel(USBHostDevice *s);
 
 /* ------------------------------------------------------------------------ */
 
+#ifndef LIBUSB_LOG_LEVEL_WARNING /* older libusb didn't define these */
+#define LIBUSB_LOG_LEVEL_WARNING 2
+#endif
+
+/* ------------------------------------------------------------------------ */
+
 #define CONTROL_TIMEOUT  10000        /* 10 sec    */
 #define BULK_TIMEOUT         0        /* unlimited */
 #define INTR_TIMEOUT         0        /* unlimited */