From 2e7ce05593b39f0a947819ca8b73f2185f372f12 Mon Sep 17 00:00:00 2001
From: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Date: Thu, 20 Jun 2019 14:23:02 -0300
Subject: [PATCH] scripts/get_abi.pl: avoid creating duplicate names
The file the Documentation/ABI/testing/sysfs-class-power has
voltage_min, voltage_max and voltage_now symbols duplicated.
They are defined first for "General Properties" and then for
"USB Properties".
This cause those warnings:
get_abi.pl rest --dir $srctree/Documentation/ABI/testing:26933: WARNING: Duplicate explicit target name: "abi_sys_class_power_supply_supply_name_voltage_max".
get_abi.pl rest --dir $srctree/Documentation/ABI/testing:26968: WARNING: Duplicate explicit target name: "abi_sys_class_power_supply_supply_name_voltage_min".
get_abi.pl rest --dir $srctree/Documentation/ABI/testing:27008: WARNING: Duplicate explicit target name: "abi_sys_class_power_supply_supply_name_voltage_now".
And, as the references are not valid, it will also generate
warnings about links to undefined references.
Fix it by storing labels into a hash table and, when a duplicated
one is found, appending random characters at the end.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
scripts/get_abi.pl | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/scripts/get_abi.pl b/scripts/get_abi.pl
index 116f0c33c16db..329ace635ac2b 100755
--- a/scripts/get_abi.pl
+++ b/scripts/get_abi.pl
@@ -194,6 +194,8 @@ sub parse_abi {
# Outputs the book on ReST format
#
+my %labels;
+
sub output_rest {
foreach my $what (sort {
($data{$a}->{type} eq "File") cmp ($data{$b}->{type} eq "File") ||
@@ -217,6 +219,13 @@ sub output_rest {
$label =~ s,_+,_,g;
$label =~ s,_$,,;
+ # Avoid duplicated labels
+ while (defined($labels{$label})) {
+ my @chars = ("A".."Z", "a".."z");
+ $label .= $chars[rand @chars];
+ }
+ $labels{$label} = 1;
+
$data{$what}->{label} .= $label;
printf ".. _%s:\n\n", $label;
--
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