fbdev: detect primary display device
Add function helper, fb_is_primary_device(). Given struct fb_info, it will
return a nonzero value if the device is the primary display.
Currently, only the i386 is supported where the function checks for the
IORESOURCE_ROM_SHADOW flag.
Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/asm-h8300/fb.h b/include/asm-h8300/fb.h
index 9f8c88d..c7df380 100644
--- a/include/asm-h8300/fb.h
+++ b/include/asm-h8300/fb.h
@@ -1,6 +1,12 @@
#ifndef _ASM_FB_H_
#define _ASM_FB_H_
+#include <linux/fb.h>
#define fb_pgprotect(...) do {} while (0)
+static inline int fb_is_primary_device(struct fb_info *info)
+{
+ return 0;
+}
+
#endif /* _ASM_FB_H_ */