From: Arnd Bergmann <arnd@xxxxxxxx> fb_is_primary_device() is defined as a global function on x86, unlike the others that have an inline version. The file that defines is however needs to include the declaration to avoid a warning: arch/x86/video/fbdev.c:14:5: error: no previous prototype for 'fb_is_primary_device' [-Werror=missing-prototypes] Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> --- arch/x86/video/fbdev.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/video/fbdev.c b/arch/x86/video/fbdev.c index 9fd24846d094..9e9143085d19 100644 --- a/arch/x86/video/fbdev.c +++ b/arch/x86/video/fbdev.c @@ -10,6 +10,7 @@ #include <linux/pci.h> #include <linux/module.h> #include <linux/vgaarb.h> +#include <asm/fb.h> int fb_is_primary_device(struct fb_info *info) { -- 2.39.2