Commit 9b3965f7 authored Jan 08, 2014 by David Woodhouse Committed by H. Peter Anvin Jan 22, 2014

x86, boot: Use attribute((used)) to ensure videocard structs are emitted

It looks like GCC will always emit an object that is marked with an
explicit section, although the documentation doesn't say that and we
possibly shouldn't be relying on it.

Clang does *not* do so, so add __attribute__((used)) to make sure.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Link: http://lkml.kernel.org/r/1389180083-23249-2-git-send-email-David.Woodhouse@intel.com

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

parent 1c678da3

arch/x86/boot/video.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -80,7 +80,7 @@ struct card_info {
		u16 xmode_n; /* Size of unprobed mode range */
		};

		#define __videocard struct card_info __attribute__((section(".videocards")))
		#define __videocard struct card_info __attribute__((used,section(".videocards")))
		extern struct card_info video_cards[], video_cards_end[];

		int mode_defined(u16 mode); /* video.c */