On 30.9.2012 23:32, Yacine Belkadi wrote:
> If a function has a return value, but its kernel-doc comment doesn't contain a
> "Return" section, then emit the following warning:
>
> Warning(file.h:129): No description found for return value of 'fct'
>
> Note: This check emits a lot of warnings at the moment, because many functions
> don't have a 'Return' doc section. So until the number of warnings goes
> sufficiently down, the check is only performed in verbose mode.
>
> Signed-off-by: Yacine Belkadi <yacine.belkadi.1@xxxxxxxxx>
Randy, are you fine merging this to kbuild.git?
Thanks,
Michal
> ---
> scripts/kernel-doc | 34 ++++++++++++++++++++++++++++++++++
> 1 file changed, 34 insertions(+)
>
> diff --git a/scripts/kernel-doc b/scripts/kernel-doc
> index 8fd107a..7f82aa8 100755
> --- a/scripts/kernel-doc
> +++ b/scripts/kernel-doc
> @@ -130,6 +130,8 @@ use strict;
> # should document the "Context:" of the function, e.g. whether the functions
> # can be called form interrupts. Unlike other sections you can end it with an
> # empty line.
> +# A non-void function should have a "Return:" section describing the return
> +# value.
> # Example-sections should contain the string EXAMPLE so that they are marked
> # appropriately in DocBook.
> #
> @@ -298,6 +300,7 @@ my $section_default = "Description"; # default section
> my $section_intro = "Introduction";
> my $section = $section_default;
> my $section_context = "Context";
> +my $section_return = "Return";
>
> my $undescribed = "-- undescribed --";
>
> @@ -1767,6 +1770,28 @@ sub check_sections($$$$$$) {
> }
>
> ##
> +# Checks the section describing the return value of a function.
> +sub check_return_section {
> + my $file = shift;
> + my $declaration_name = shift;
> + my $return_type = shift;
> +
> + # Ignore an empty return type (It's a macro)
> + # Ignore functions with a "void" return type. (But don't ignore "void *")
> + if (($return_type eq "") || ($return_type =~ /void\s*\w*\s*$/)) {
> + return;
> + }
> +
> + if (!defined($sections{$section_return}) ||
> + $sections{$section_return} eq "") {
> + print STDERR "Warning(${file}:$.): " .
> + "No description found for return value of " .
> + "'$declaration_name'\n";
> + ++$warnings;
> + }
> +}
> +
> +##
> # takes a function prototype and the name of the current file being
> # processed and spits out all the details stored in the global
> # arrays/hashes.
> @@ -1837,6 +1862,15 @@ sub dump_function($$) {
> my $prms = join " ", @parameterlist;
> check_sections($file, $declaration_name, "function", $sectcheck, $prms, "");
>
> + # This check emits a lot of warnings at the moment, because many
> + # functions don't have a 'Return' doc section. So until the number
> + # of warnings goes sufficiently down, the check is only performed in
> + # verbose mode.
> + # TODO: always perform the check.
> + if ($verbose) {
> + check_return_section($file, $declaration_name, $return_type);
> + }
> +
> output_declaration($declaration_name,
> 'function',
> {'function' => $declaration_name,
>
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