From 8a5e63770119849fa63f24608097524205e630c4 Mon Sep 17 00:00:00 2001
From: Carlos <carlos.fenollosa@gmail.com>
Date: Mon, 23 Mar 2015 09:40:10 +0100
Subject: [PATCH] added comments

---
 21-shell/drivers/keyboard.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/21-shell/drivers/keyboard.c b/21-shell/drivers/keyboard.c
index 7090a8f..416243f 100644
--- a/21-shell/drivers/keyboard.c
+++ b/21-shell/drivers/keyboard.c
@@ -31,10 +31,11 @@ static void keyboard_callback(registers_t regs) {
         kprint_backspace();
     } else if (scancode == ENTER) {
         kprint("\n");
-        user_input(key_buffer);
+        user_input(key_buffer); /* kernel-controlled function */
         key_buffer[0] = '\0';
     } else {
         char letter = sc_ascii[(int)scancode];
+        /* Remember that kprint only accepts char[] */
         char str[2] = {letter, '\0'};
         append(key_buffer, letter);
         kprint(str);