diff --git a/repos/dde_linux/src/drivers/usb_host/lx_emul.cc b/repos/dde_linux/src/drivers/usb_host/lx_emul.cc
index 10617519e5..d3f285a7a2 100644
--- a/repos/dde_linux/src/drivers/usb_host/lx_emul.cc
+++ b/repos/dde_linux/src/drivers/usb_host/lx_emul.cc
@@ -33,6 +33,8 @@
 #include <lx_emul/impl/slab.h>
 #include <lx_emul/impl/mutex.h>
 
+unsigned long loops_per_jiffy = 1;  /* needed by 'dwc_otg_attr.c' */
+
 namespace Genode {
 	class Slab_backend_alloc;
 	class Slab_alloc;
diff --git a/repos/dde_linux/src/drivers/usb_host/lx_emul.h b/repos/dde_linux/src/drivers/usb_host/lx_emul.h
index b022091edb..3d1e61aeb4 100644
--- a/repos/dde_linux/src/drivers/usb_host/lx_emul.h
+++ b/repos/dde_linux/src/drivers/usb_host/lx_emul.h
@@ -105,6 +105,8 @@ typedef unsigned long phys_addr_t;
 typedef unsigned __poll_t;
 typedef unsigned slab_flags_t;
 
+extern unsigned long loops_per_jiffy;  /* needed by 'dwc_otg_attr.c' */
+
 
 /**********************
  ** linux/compiler.h **