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