kernel: make kprintf print to a ring buffer

The function kprintf should print to an internal ringbuffer instead of
directly to the framebuffer. This reduces dependence on the existence of
a framebuffer in the first place.

Signed-off-by: Danny Holman <dholman@gymli.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/include/kernel/io.h b/include/kernel/io.h
index 8f5fa59..cf8404a 100644
--- a/include/kernel/io.h
+++ b/include/kernel/io.h
@@ -1,5 +1,5 @@
-#ifndef IO_H
-#define IO_H
+#ifndef KERNEL_IO_H
+#define KERNEL_IO_H
 
 #include <stdarg.h>