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-rw-r--r--lib/cmdline.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/lib/cmdline.c b/lib/cmdline.c
index b390dd03363b..f33882f1cd52 100644
--- a/lib/cmdline.c
+++ b/lib/cmdline.c
@@ -83,7 +83,7 @@ EXPORT_SYMBOL(get_option);
* get_options - Parse a string into a list of integers
* @str: String to be parsed
* @nints: size of integer array
- * @ints: integer array
+ * @ints: integer array (must have room for at least one element)
*
* This function parses a string containing a comma-separated
* list of integers, a hyphen-separated range of _positive_ integers,
@@ -91,6 +91,11 @@ EXPORT_SYMBOL(get_option);
* full, or when no more numbers can be retrieved from the
* string.
*
+ * Returns:
+ *
+ * The first element is filled by the number of collected integers
+ * in the range. The rest is what was parsed from the @str.
+ *
* Return value is the character in the string which caused
* the parse to end (typically a null terminator, if @str is
* completely parseable).