common: board_r: Drop initr_xen wrapper

Add a return value to xen_init and use it directly in the
post-relocation init sequence, rather than using a wrapper stub.

Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

common/board_r.c

@@ -428,14 +428,6 @@ static int initr_mmc(void)
 }
 #endif
 
-#ifdef CONFIG_XEN
-static int initr_xen(void)
-{
-	xen_init();
-	return 0;
-}
-#endif
-
 #ifdef CONFIG_PVBLOCK
 static int initr_pvblock(void)
 {
@@ -743,7 +735,7 @@ static init_fnc_t init_sequence_r[] = {
 	initr_mmc,
 #endif
 #ifdef CONFIG_XEN
-	initr_xen,
+	xen_init,
 #endif
 #ifdef CONFIG_PVBLOCK
 	initr_pvblock,

drivers/xen/hypervisor.c

@@ -232,7 +232,7 @@ void clear_evtchn(uint32_t port)
 	synch_clear_bit(port, &s->evtchn_pending[0]);
 }
 
-void xen_init(void)
+int xen_init(void)
 {
 	debug("%s\n", __func__);
 
@@ -240,6 +240,8 @@ void xen_init(void)
 	init_events();
 	init_xenbus();
 	init_gnttab();
+
+	return 0;
 }
 
 void xen_fini(void)

include/xen.h

@@ -11,7 +11,7 @@
  * Map Xen memory pages, initialize event handler and xenbus,
  * setup the grant table.
  */
-void xen_init(void);
+int xen_init(void);
 
 /**
  * xen_fini() - Board cleanup before Linux kernel start