1 files changed, 30 insertions, 10 deletions

diff --git a/scripts/kconfig/expr.h b/scripts/kconfig/expr.h
index 0bdb58eda0cb..6408fefae083 100644
--- a/scripts/kconfig/expr.h
+++ b/scripts/kconfig/expr.h
@@ -111,21 +111,41 @@ struct symbol {
 #define SYMBOL_HASHSIZE         257
 #define SYMBOL_HASHMASK         0xff
 
+/* A property represent the config options that can be associated
+ * with a config "symbol".
+ * Sample:
+ * config FOO
+ *         default y
+ *         prompt "foo prompt"
+ *         select BAR
+ * config BAZ
+ *         int "BAZ Value"
+ *         range 1..255
+ */
 enum prop_type {
-        P_UNKNOWN, P_PROMPT, P_COMMENT, P_MENU, P_DEFAULT, P_CHOICE,
-        P_SELECT, P_RANGE, P_ENV
+        P_UNKNOWN,
+        P_PROMPT,   /* prompt "foo prompt" or "BAZ Value" */
+        P_COMMENT,  /* text associated with a comment */
+        P_MENU,     /* prompt associated with a menuconfig option */
+        P_DEFAULT,  /* default y */
+        P_CHOICE,   /* choice value */
+        P_SELECT,   /* select BAR */
+        P_RANGE,    /* range 7..100 (for a symbol) */
+        P_ENV,      /* value from environment variable */
 };
 
 struct property {
-        struct property *next;
-        struct symbol *sym;
-        enum prop_type type;
-        const char *text;
+        struct property *next;     /* next property - null if last */
+        struct symbol *sym;        /* the symbol for which the property is associated */
+        enum prop_type type;       /* type of property */
+        const char *text;          /* the prompt value - P_PROMPT, P_MENU, P_COMMENT */
         struct expr_value visible;
-        struct expr *expr;
-        struct menu *menu;
-        struct file *file;
-        int lineno;
+        struct expr *expr;         /* the optional conditional part of the property */
+        struct menu *menu;         /* the menu the property are associated with
+                                    * valid for: P_SELECT, P_RANGE, P_CHOICE,
+                                    * P_PROMPT, P_DEFAULT, P_MENU, P_COMMENT */
+        struct file *file;         /* what file was this property defined */
+        int lineno;                /* what lineno was this property defined */
 };
 
 #define for_all_properties(sym, st, tok) \