[ARM] Ensure machine information structures aren't optimised away

Since the machine information structures are now static, the
compiler might optimise them away.  Mark them with
__attribute_used__ to prevent this occuring.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/asm-arm/mach/arch.h b/include/asm-arm/mach/arch.h
index 7273c6fd95b5..eb262e078c46 100644
--- a/include/asm-arm/mach/arch.h
+++ b/include/asm-arm/mach/arch.h
@@ -50,6 +50,7 @@ struct machine_desc {
  */
 #define MACHINE_START(_type,_name)                      \
 static const struct machine_desc __mach_desc_##_type    \
+ __attribute_used__                                     \
  __attribute__((__section__(".arch.info.init"))) = {    \
         .nr             = MACH_TYPE_##_type,            \
         .name           = _name,