[PATCH 08/13] arm/arm64: xen: avoid gcc-4.4 warning

Arnd Bergmann
2016-12-16T10:55:40Z

Ancient gcc doesn't know about __builtin_unreachable(), causing
lots of instances of a harmless warning:

include/xen/arm/page.h: In function 'arbitrary_virt_to_machine':
include/xen/arm/page.h:85: warning: no return statement in function returning non-void

Adding a return statement doesn't change the behavior here, but
shuts up that warning.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
include/xen/arm/page.h | 1 +
1 file changed, 1 insertion(+)

diff --git a/include/xen/arm/page.h b/include/xen/arm/page.h
index 415dbc6e43fd..2485013e3c6f 100644
--- a/include/xen/arm/page.h
+++ b/include/xen/arm/page.h
@@ -82,6 +82,7 @@ static inline unsigned long bfn_to_pfn(unsigned long bfn)
static inline xmaddr_t arbitrary_virt_to_machine(void *vaddr)
{
BUG();
+ return XMADDR(0);
}

/* TODO: this shouldn't be here but it is because the frontend drivers
--
2.9.0