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scripts: kernel-doc: use :c:union when needed 

Sphinx C domain code after 3.2.1 will start complaning if :c:struct
would be used for an union type:

	.../Documentation/gpu/drm-kms-helpers:352: ../drivers/video/hdmi.c:851: WARNING: C 'identifier' cross-reference uses wrong tag: reference name is 'union hdmi_infoframe' but found name is 'struct hdmi_infoframe'. Full reference name is 'union hdmi_infoframe'. Full found name is 'struct hdmi_infoframe'.

So, let's address this issue too in advance, in order to
avoid future issues.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/6e4ec3eec914df62389a299797a3880ae4490f35.1603791716.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Mauro Carvalho Chehab 2020-10-27 10:51:05 +01:00 committed by Jonathan Corbet
parent e051955977
commit 72b97d0b91
1 changed files with 5 additions and 1 deletions
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scripts/kernel-doc
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@ -1092,7 +1092,11 @@ sub output_struct_rst(%) {
print "\n\n.. c:type:: " . $name . "\n\n";
} else {
my $name = $args{'struct'};
print "\n\n.. c:struct:: " . $name . "\n\n";
if ($args{'type'} eq 'union') {
print "\n\n.. c:union:: " . $name . "\n\n";
} else {
print "\n\n.. c:struct:: " . $name . "\n\n";
}
}
print_lineno($declaration_start_line);
$lineprefix = " ";