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@@ -62,7 +62,10 @@ my $conststructsfile = "$D/const_structs.checkpatch";
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my $typedefsfile = "";
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my $u_boot = 0;
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my $color = "auto";
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-my $allow_c99_comments = 1;
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+my $allow_c99_comments = 1; # Can be overridden by --ignore C99_COMMENT_TOLERANCE
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+# git output parsing needs US English output, so first set backtick child process LANGUAGE
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+my $git_command ='export LANGUAGE=en_US.UTF-8; git';
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+my $tabsize = 8;
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sub help {
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my ($exitcode) = @_;
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@@ -99,6 +102,7 @@ Options:
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if exceeded, warn on patches
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requires --strict for use with --file
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--min-conf-desc-length=n set the min description length, if shorter, warn
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+ --tab-size=n set the number of spaces for tab (default $tabsize)
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--root=PATH PATH to the kernel tree root
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--no-summary suppress the per-file summary
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--mailback only produce a report in case of warnings/errors
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@@ -217,6 +221,7 @@ GetOptions(
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'list-types!' => \$list_types,
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'max-line-length=i' => \$max_line_length,
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'min-conf-desc-length=i' => \$min_conf_desc_length,
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+ 'tab-size=i' => \$tabsize,
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'root=s' => \$root,
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'summary!' => \$summary,
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'mailback!' => \$mailback,
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@@ -270,6 +275,9 @@ if ($color =~ /^[01]$/) {
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die "Invalid color mode: $color\n";
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}
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+# skip TAB size 1 to avoid additional checks on $tabsize - 1
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+die "Invalid TAB size: $tabsize\n" if ($tabsize < 2);
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+
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sub hash_save_array_words {
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my ($hashRef, $arrayRef) = @_;
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@@ -473,8 +481,19 @@ our $logFunctions = qr{(?x:
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seq_vprintf|seq_printf|seq_puts
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)};
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+our $allocFunctions = qr{(?x:
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+ (?:(?:devm_)?
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+ (?:kv|k|v)[czm]alloc(?:_node|_array)? |
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+ kstrdup(?:_const)? |
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+ kmemdup(?:_nul)?) |
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+ (?:\w+)?alloc_skb(?:_ip_align)? |
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+ # dev_alloc_skb/netdev_alloc_skb, et al
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+ dma_alloc_coherent
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+)};
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+
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our $signature_tags = qr{(?xi:
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Signed-off-by:|
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+ Co-developed-by:|
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Acked-by:|
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Tested-by:|
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Reviewed-by:|
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@@ -580,6 +599,27 @@ foreach my $entry (@mode_permission_funcs) {
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}
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$mode_perms_search = "(?:${mode_perms_search})";
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+our %deprecated_apis = (
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+ "synchronize_rcu_bh" => "synchronize_rcu",
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+ "synchronize_rcu_bh_expedited" => "synchronize_rcu_expedited",
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+ "call_rcu_bh" => "call_rcu",
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+ "rcu_barrier_bh" => "rcu_barrier",
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+ "synchronize_sched" => "synchronize_rcu",
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+ "synchronize_sched_expedited" => "synchronize_rcu_expedited",
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+ "call_rcu_sched" => "call_rcu",
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+ "rcu_barrier_sched" => "rcu_barrier",
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+ "get_state_synchronize_sched" => "get_state_synchronize_rcu",
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+ "cond_synchronize_sched" => "cond_synchronize_rcu",
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+);
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+
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+#Create a search pattern for all these strings to speed up a loop below
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+our $deprecated_apis_search = "";
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+foreach my $entry (keys %deprecated_apis) {
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+ $deprecated_apis_search .= '|' if ($deprecated_apis_search ne "");
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+ $deprecated_apis_search .= $entry;
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+}
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+$deprecated_apis_search = "(?:${deprecated_apis_search})";
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+
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our $mode_perms_world_writable = qr{
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S_IWUGO |
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S_IWOTH |
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@@ -777,12 +817,12 @@ sub build_types {
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}x;
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$Type = qr{
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$NonptrType
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- (?:(?:\s|\*|\[\])+\s*const|(?:\s|\*\s*(?:const\s*)?|\[\])+|(?:\s*\[\s*\])+)?
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+ (?:(?:\s|\*|\[\])+\s*const|(?:\s|\*\s*(?:const\s*)?|\[\])+|(?:\s*\[\s*\])+){0,4}
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(?:\s+$Inline|\s+$Modifier)*
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}x;
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$TypeMisordered = qr{
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$NonptrTypeMisordered
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- (?:(?:\s|\*|\[\])+\s*const|(?:\s|\*\s*(?:const\s*)?|\[\])+|(?:\s*\[\s*\])+)?
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+ (?:(?:\s|\*|\[\])+\s*const|(?:\s|\*\s*(?:const\s*)?|\[\])+|(?:\s*\[\s*\])+){0,4}
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(?:\s+$Inline|\s+$Modifier)*
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}x;
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$Declare = qr{(?:$Storage\s+(?:$Inline\s+)?)?$Type};
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@@ -847,14 +887,18 @@ sub seed_camelcase_file {
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}
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}
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+our %maintained_status = ();
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+
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sub is_maintained_obsolete {
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my ($filename) = @_;
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return 0 if (!$tree || !(-e "$root/scripts/get_maintainer.pl"));
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- my $status = `perl $root/scripts/get_maintainer.pl --status --nom --nol --nogit --nogit-fallback -f $filename 2>&1`;
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+ if (!exists($maintained_status{$filename})) {
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+ $maintained_status{$filename} = `perl $root/scripts/get_maintainer.pl --status --nom --nol --nogit --nogit-fallback -f $filename 2>&1`;
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+ }
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- return $status =~ /obsolete/i;
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+ return $maintained_status{$filename} =~ /obsolete/i;
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}
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sub is_SPDX_License_valid {
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@@ -879,7 +923,7 @@ sub seed_camelcase_includes {
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$camelcase_seeded = 1;
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if (-e ".git") {
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- my $git_last_include_commit = `git log --no-merges --pretty=format:"%h%n" -1 -- include`;
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+ my $git_last_include_commit = `${git_command} log --no-merges --pretty=format:"%h%n" -1 -- include`;
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chomp $git_last_include_commit;
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$camelcase_cache = ".checkpatch-camelcase.git.$git_last_include_commit";
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} else {
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@@ -907,7 +951,7 @@ sub seed_camelcase_includes {
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}
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if (-e ".git") {
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- $files = `git ls-files "include/*.h"`;
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+ $files = `${git_command} ls-files "include/*.h"`;
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@include_files = split('\n', $files);
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}
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@@ -931,13 +975,13 @@ sub git_commit_info {
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return ($id, $desc) if ((which("git") eq "") || !(-e ".git"));
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- my $output = `git log --no-color --format='%H %s' -1 $commit 2>&1`;
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+ my $output = `${git_command} log --no-color --format='%H %s' -1 $commit 2>&1`;
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$output =~ s/^\s*//gm;
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my @lines = split("\n", $output);
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return ($id, $desc) if ($#lines < 0);
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- if ($lines[0] =~ /^error: short SHA1 $commit is ambiguous\./) {
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+ if ($lines[0] =~ /^error: short SHA1 $commit is ambiguous/) {
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# Maybe one day convert this block of bash into something that returns
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# all matching commit ids, but it's very slow...
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#
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@@ -981,7 +1025,7 @@ if ($git) {
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} else {
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$git_range = "-1 $commit_expr";
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}
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- my $lines = `git log --no-color --no-merges --pretty=format:'%H %s' $git_range`;
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+ my $lines = `${git_command} log --no-color --no-merges --pretty=format:'%H %s' $git_range`;
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foreach my $line (split(/\n/, $lines)) {
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$line =~ /^([0-9a-fA-F]{40,40}) (.*)$/;
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next if (!defined($1) || !defined($2));
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@@ -996,6 +1040,7 @@ if ($git) {
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}
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my $vname;
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+$allow_c99_comments = !defined $ignore_type{"C99_COMMENT_TOLERANCE"};
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for my $filename (@ARGV) {
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my $FILE;
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if ($git) {
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@@ -1086,6 +1131,7 @@ sub parse_email {
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my ($formatted_email) = @_;
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my $name = "";
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+ my $name_comment = "";
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my $address = "";
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my $comment = "";
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@@ -1118,6 +1164,10 @@ sub parse_email {
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$name = trim($name);
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$name =~ s/^\"|\"$//g;
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+ $name =~ s/(\s*\([^\)]+\))\s*//;
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+ if (defined($1)) {
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+ $name_comment = trim($1);
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+ }
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$address = trim($address);
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$address =~ s/^\<|\>$//g;
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@@ -1126,7 +1176,7 @@ sub parse_email {
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$name = "\"$name\"";
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}
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- return ($name, $address, $comment);
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+ return ($name, $name_comment, $address, $comment);
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}
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sub format_email {
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@@ -1152,6 +1202,23 @@ sub format_email {
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return $formatted_email;
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}
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+sub reformat_email {
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+ my ($email) = @_;
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+
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+ my ($email_name, $name_comment, $email_address, $comment) = parse_email($email);
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+ return format_email($email_name, $email_address);
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+}
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+
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+sub same_email_addresses {
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+ my ($email1, $email2) = @_;
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+
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+ my ($email1_name, $name1_comment, $email1_address, $comment1) = parse_email($email1);
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+ my ($email2_name, $name2_comment, $email2_address, $comment2) = parse_email($email2);
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+
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+ return $email1_name eq $email2_name &&
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+ $email1_address eq $email2_address;
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+}
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+
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sub which {
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my ($bin) = @_;
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@@ -1185,7 +1252,7 @@ sub expand_tabs {
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if ($c eq "\t") {
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$res .= ' ';
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$n++;
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- for (; ($n % 8) != 0; $n++) {
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+ for (; ($n % $tabsize) != 0; $n++) {
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$res .= ' ';
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}
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next;
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@@ -2198,7 +2265,7 @@ sub string_find_replace {
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sub tabify {
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my ($leading) = @_;
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- my $source_indent = 8;
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+ my $source_indent = $tabsize;
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my $max_spaces_before_tab = $source_indent - 1;
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my $spaces_to_tab = " " x $source_indent;
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@@ -2240,6 +2307,19 @@ sub pos_last_openparen {
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return length(expand_tabs(substr($line, 0, $last_openparen))) + 1;
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}
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+sub get_raw_comment {
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+ my ($line, $rawline) = @_;
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+ my $comment = '';
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+
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+ for my $i (0 .. (length($line) - 1)) {
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+ if (substr($line, $i, 1) eq "$;") {
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+ $comment .= substr($rawline, $i, 1);
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+ }
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+ }
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+
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+ return $comment;
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+}
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+
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# Checks specific to U-Boot
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sub u_boot_line {
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my ($realfile, $line, $herecurr) = @_;
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@@ -2297,6 +2377,7 @@ sub process {
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my $is_binding_patch = -1;
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my $in_header_lines = $file ? 0 : 1;
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my $in_commit_log = 0; #Scanning lines before patch
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+ my $has_patch_separator = 0; #Found a --- line
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my $has_commit_log = 0; #Encountered lines before patch
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my $commit_log_lines = 0; #Number of commit log lines
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my $commit_log_possible_stack_dump = 0;
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@@ -2436,6 +2517,7 @@ sub process {
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$sline =~ s/$;/ /g; #with comments as spaces
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my $rawline = $rawlines[$linenr - 1];
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+ my $raw_comment = get_raw_comment($line, $rawline);
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# check if it's a mode change, rename or start of a patch
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if (!$in_commit_log &&
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@@ -2607,21 +2689,26 @@ sub process {
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$author = $1;
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$author = encode("utf8", $author) if ($line =~ /=\?utf-8\?/i);
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$author =~ s/"//g;
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+ $author = reformat_email($author);
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}
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# Check the patch for a signoff:
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- if ($line =~ /^\s*signed-off-by:/i) {
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+ if ($line =~ /^\s*signed-off-by:\s*(.*)/i) {
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$signoff++;
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$in_commit_log = 0;
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if ($author ne '') {
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- my $l = $line;
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- $l =~ s/"//g;
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- if ($l =~ /^\s*signed-off-by:\s*\Q$author\E/i) {
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- $authorsignoff = 1;
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+ if (same_email_addresses($1, $author)) {
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+ $authorsignoff = 1;
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}
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}
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}
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+# Check for patch separator
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+ if ($line =~ /^---$/) {
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+ $has_patch_separator = 1;
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+ $in_commit_log = 0;
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+ }
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+
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# Check if MAINTAINERS is being updated. If so, there's probably no need to
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# emit the "does MAINTAINERS need updating?" message on file add/move/delete
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if ($line =~ /^\s*MAINTAINERS\s*\|/) {
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@@ -2667,7 +2754,7 @@ sub process {
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}
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}
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- my ($email_name, $email_address, $comment) = parse_email($email);
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+ my ($email_name, $name_comment, $email_address, $comment) = parse_email($email);
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my $suggested_email = format_email(($email_name, $email_address));
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if ($suggested_email eq "") {
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ERROR("BAD_SIGN_OFF",
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@@ -2678,9 +2765,7 @@ sub process {
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$dequoted =~ s/" </ </;
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# Don't force email to have quotes
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# Allow just an angle bracketed address
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- if ("$dequoted$comment" ne $email &&
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- "<$email_address>$comment" ne $email &&
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- "$suggested_email$comment" ne $email) {
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+ if (!same_email_addresses($email, $suggested_email)) {
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WARN("BAD_SIGN_OFF",
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"email address '$email' might be better as '$suggested_email$comment'\n" . $herecurr);
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}
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@@ -2696,6 +2781,24 @@ sub process {
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} else {
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$signatures{$sig_nospace} = 1;
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}
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+
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+# Check Co-developed-by: immediately followed by Signed-off-by: with same name and email
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+ if ($sign_off =~ /^co-developed-by:$/i) {
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+ if ($email eq $author) {
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+ WARN("BAD_SIGN_OFF",
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+ "Co-developed-by: should not be used to attribute nominal patch author '$author'\n" . "$here\n" . $rawline);
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+ }
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+ if (!defined $lines[$linenr]) {
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+ WARN("BAD_SIGN_OFF",
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+ "Co-developed-by: must be immediately followed by Signed-off-by:\n" . "$here\n" . $rawline);
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+ } elsif ($rawlines[$linenr] !~ /^\s*signed-off-by:\s*(.*)/i) {
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+ WARN("BAD_SIGN_OFF",
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+ "Co-developed-by: must be immediately followed by Signed-off-by:\n" . "$here\n" . $rawline . "\n" .$rawlines[$linenr]);
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+ } elsif ($1 ne $email) {
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+ WARN("BAD_SIGN_OFF",
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+ "Co-developed-by and Signed-off-by: name/email do not match \n" . "$here\n" . $rawline . "\n" .$rawlines[$linenr]);
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+ }
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+ }
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}
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# Check email subject for common tools that don't need to be mentioned
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@@ -2705,10 +2808,10 @@ sub process {
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"A patch subject line should describe the change not the tool that found it\n" . $herecurr);
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}
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-# Check for unwanted Gerrit info
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- if ($in_commit_log && $line =~ /^\s*change-id:/i) {
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+# Check for Gerrit Change-Ids not in any patch context
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+ if ($realfile eq '' && !$has_patch_separator && $line =~ /^\s*change-id:/i) {
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ERROR("GERRIT_CHANGE_ID",
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- "Remove Gerrit Change-Id's before submitting upstream.\n" . $herecurr);
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+ "Remove Gerrit Change-Id's before submitting upstream\n" . $herecurr);
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}
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# Check if the commit log is in a possible stack dump
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@@ -2716,8 +2819,10 @@ sub process {
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|
|
($line =~ /^\s*(?:WARNING:|BUG:)/ ||
|
|
|
$line =~ /^\s*\[\s*\d+\.\d{6,6}\s*\]/ ||
|
|
|
# timestamp
|
|
|
- $line =~ /^\s*\[\<[0-9a-fA-F]{8,}\>\]/)) {
|
|
|
- # stack dump address
|
|
|
+ $line =~ /^\s*\[\<[0-9a-fA-F]{8,}\>\]/) ||
|
|
|
+ $line =~ /^(?:\s+\w+:\s+[0-9a-fA-F]+){3,3}/ ||
|
|
|
+ $line =~ /^\s*\#\d+\s*\[[0-9a-fA-F]+\]\s*\w+ at [0-9a-fA-F]+/) {
|
|
|
+ # stack dump address styles
|
|
|
$commit_log_possible_stack_dump = 1;
|
|
|
}
|
|
|
|
|
@@ -2744,7 +2849,7 @@ sub process {
|
|
|
|
|
|
# Check for git id commit length and improperly formed commit descriptions
|
|
|
if ($in_commit_log && !$commit_log_possible_stack_dump &&
|
|
|
- $line !~ /^\s*(?:Link|Patchwork|http|https|BugLink):/i &&
|
|
|
+ $line !~ /^\s*(?:Link|Patchwork|http|https|BugLink|base-commit):/i &&
|
|
|
$line !~ /^This reverts commit [0-9a-f]{7,40}/ &&
|
|
|
($line =~ /\bcommit\s+[0-9a-f]{5,}\b/i ||
|
|
|
($line =~ /(?:\s|^)[0-9a-f]{12,40}(?:[\s"'\(\[]|$)/i &&
|
|
@@ -2813,6 +2918,14 @@ sub process {
|
|
|
"added, moved or deleted file(s), does MAINTAINERS need updating?\n" . $herecurr);
|
|
|
}
|
|
|
|
|
|
+# Check for adding new DT bindings not in schema format
|
|
|
+ if (!$in_commit_log &&
|
|
|
+ ($line =~ /^new file mode\s*\d+\s*$/) &&
|
|
|
+ ($realfile =~ m@^Documentation/devicetree/bindings/.*\.txt$@)) {
|
|
|
+ WARN("DT_SCHEMA_BINDING_PATCH",
|
|
|
+ "DT bindings should be in DT schema format. See: Documentation/devicetree/writing-schema.rst\n");
|
|
|
+ }
|
|
|
+
|
|
|
# Check for wrappage within a valid hunk of the file
|
|
|
if ($realcnt != 0 && $line !~ m{^(?:\+|-| |\\ No newline|$)}) {
|
|
|
ERROR("CORRUPTED_PATCH",
|
|
@@ -2889,6 +3002,17 @@ sub process {
|
|
|
}
|
|
|
}
|
|
|
|
|
|
+# check for invalid commit id
|
|
|
+ if ($in_commit_log && $line =~ /(^fixes:|\bcommit)\s+([0-9a-f]{6,40})\b/i) {
|
|
|
+ my $id;
|
|
|
+ my $description;
|
|
|
+ ($id, $description) = git_commit_info($2, undef, undef);
|
|
|
+ if (!defined($id)) {
|
|
|
+ WARN("UNKNOWN_COMMIT_ID",
|
|
|
+ "Unknown commit id '$2', maybe rebased or not pulled?\n" . $herecurr);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
# ignore non-hunk lines and lines being removed
|
|
|
next if (!$hunk_line || $line =~ /^-/);
|
|
|
|
|
@@ -3018,7 +3142,7 @@ sub process {
|
|
|
my @compats = $rawline =~ /\"([a-zA-Z0-9\-\,\.\+_]+)\"/g;
|
|
|
|
|
|
my $dt_path = $root . "/Documentation/devicetree/bindings/";
|
|
|
- my $vp_file = $dt_path . "vendor-prefixes.txt";
|
|
|
+ my $vp_file = $dt_path . "vendor-prefixes.yaml";
|
|
|
|
|
|
foreach my $compat (@compats) {
|
|
|
my $compat2 = $compat;
|
|
@@ -3033,7 +3157,7 @@ sub process {
|
|
|
|
|
|
next if $compat !~ /^([a-zA-Z0-9\-]+)\,/;
|
|
|
my $vendor = $1;
|
|
|
- `grep -Eq "^$vendor\\b" $vp_file`;
|
|
|
+ `grep -Eq "\\"\\^\Q$vendor\E,\\.\\*\\":" $vp_file`;
|
|
|
if ( $? >> 8 ) {
|
|
|
WARN("UNDOCUMENTED_DT_STRING",
|
|
|
"DT compatible string vendor \"$vendor\" appears un-documented -- check $vp_file\n" . $herecurr);
|
|
@@ -3051,22 +3175,41 @@ sub process {
|
|
|
$comment = '/*';
|
|
|
} elsif ($realfile =~ /\.(c|dts|dtsi)$/) {
|
|
|
$comment = '//';
|
|
|
- } elsif (($checklicenseline == 2) || $realfile =~ /\.(sh|pl|py|awk|tc)$/) {
|
|
|
+ } elsif (($checklicenseline == 2) || $realfile =~ /\.(sh|pl|py|awk|tc|yaml)$/) {
|
|
|
$comment = '#';
|
|
|
} elsif ($realfile =~ /\.rst$/) {
|
|
|
$comment = '..';
|
|
|
}
|
|
|
|
|
|
+# check SPDX comment style for .[chsS] files
|
|
|
+ if ($realfile =~ /\.[chsS]$/ &&
|
|
|
+ $rawline =~ /SPDX-License-Identifier:/ &&
|
|
|
+ $rawline !~ m@^\+\s*\Q$comment\E\s*@) {
|
|
|
+ WARN("SPDX_LICENSE_TAG",
|
|
|
+ "Improper SPDX comment style for '$realfile', please use '$comment' instead\n" . $herecurr);
|
|
|
+ }
|
|
|
+
|
|
|
if ($comment !~ /^$/ &&
|
|
|
- $rawline !~ /^\+\Q$comment\E SPDX-License-Identifier: /) {
|
|
|
- WARN("SPDX_LICENSE_TAG",
|
|
|
- "Missing or malformed SPDX-License-Identifier tag in line $checklicenseline\n" . $herecurr);
|
|
|
+ $rawline !~ m@^\+\Q$comment\E SPDX-License-Identifier: @) {
|
|
|
+ WARN("SPDX_LICENSE_TAG",
|
|
|
+ "Missing or malformed SPDX-License-Identifier tag in line $checklicenseline\n" . $herecurr);
|
|
|
} elsif ($rawline =~ /(SPDX-License-Identifier: .*)/) {
|
|
|
- my $spdx_license = $1;
|
|
|
- if (!is_SPDX_License_valid($spdx_license)) {
|
|
|
- WARN("SPDX_LICENSE_TAG",
|
|
|
- "'$spdx_license' is not supported in LICENSES/...\n" . $herecurr);
|
|
|
- }
|
|
|
+ my $spdx_license = $1;
|
|
|
+ if (!is_SPDX_License_valid($spdx_license)) {
|
|
|
+ WARN("SPDX_LICENSE_TAG",
|
|
|
+ "'$spdx_license' is not supported in LICENSES/...\n" . $herecurr);
|
|
|
+ }
|
|
|
+ if ($realfile =~ m@^Documentation/devicetree/bindings/@ &&
|
|
|
+ not $spdx_license =~ /GPL-2\.0.*BSD-2-Clause/) {
|
|
|
+ my $msg_level = \&WARN;
|
|
|
+ $msg_level = \&CHK if ($file);
|
|
|
+ if (&{$msg_level}("SPDX_LICENSE_TAG",
|
|
|
+
|
|
|
+ "DT binding documents should be licensed (GPL-2.0-only OR BSD-2-Clause)\n" . $herecurr) &&
|
|
|
+ $fix) {
|
|
|
+ $fixed[$fixlinenr] =~ s/SPDX-License-Identifier: .*/SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)/;
|
|
|
+ }
|
|
|
+ }
|
|
|
}
|
|
|
}
|
|
|
}
|
|
@@ -3074,6 +3217,14 @@ sub process {
|
|
|
# check we are in a valid source file if not then ignore this hunk
|
|
|
next if ($realfile !~ /\.(h|c|s|S|sh|dtsi|dts)$/);
|
|
|
|
|
|
+# check for using SPDX-License-Identifier on the wrong line number
|
|
|
+ if ($realline != $checklicenseline &&
|
|
|
+ $rawline =~ /\bSPDX-License-Identifier:/ &&
|
|
|
+ substr($line, @-, @+ - @-) eq "$;" x (@+ - @-)) {
|
|
|
+ WARN("SPDX_LICENSE_TAG",
|
|
|
+ "Misplaced SPDX-License-Identifier tag - use line $checklicenseline instead\n" . $herecurr);
|
|
|
+ }
|
|
|
+
|
|
|
# line length limit (with some exclusions)
|
|
|
#
|
|
|
# There are a few types of lines that may extend beyond $max_line_length:
|
|
@@ -3152,7 +3303,7 @@ sub process {
|
|
|
next if ($realfile !~ /\.(h|c|pl|dtsi|dts)$/);
|
|
|
|
|
|
# at the beginning of a line any tabs must come first and anything
|
|
|
-# more than 8 must use tabs.
|
|
|
+# more than $tabsize must use tabs.
|
|
|
if ($rawline =~ /^\+\s* \t\s*\S/ ||
|
|
|
$rawline =~ /^\+\s* \s*/) {
|
|
|
my $herevet = "$here\n" . cat_vet($rawline) . "\n";
|
|
@@ -3171,7 +3322,7 @@ sub process {
|
|
|
"please, no space before tabs\n" . $herevet) &&
|
|
|
$fix) {
|
|
|
while ($fixed[$fixlinenr] =~
|
|
|
- s/(^\+.*) {8,8}\t/$1\t\t/) {}
|
|
|
+ s/(^\+.*) {$tabsize,$tabsize}\t/$1\t\t/) {}
|
|
|
while ($fixed[$fixlinenr] =~
|
|
|
s/(^\+.*) +\t/$1\t/) {}
|
|
|
}
|
|
@@ -3193,11 +3344,11 @@ sub process {
|
|
|
if ($perl_version_ok &&
|
|
|
$sline =~ /^\+\t+( +)(?:$c90_Keywords\b|\{\s*$|\}\s*(?:else\b|while\b|\s*$)|$Declare\s*$Ident\s*[;=])/) {
|
|
|
my $indent = length($1);
|
|
|
- if ($indent % 8) {
|
|
|
+ if ($indent % $tabsize) {
|
|
|
if (WARN("TABSTOP",
|
|
|
"Statements should start on a tabstop\n" . $herecurr) &&
|
|
|
$fix) {
|
|
|
- $fixed[$fixlinenr] =~ s@(^\+\t+) +@$1 . "\t" x ($indent/8)@e;
|
|
|
+ $fixed[$fixlinenr] =~ s@(^\+\t+) +@$1 . "\t" x ($indent/$tabsize)@e;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
@@ -3215,8 +3366,8 @@ sub process {
|
|
|
my $newindent = $2;
|
|
|
|
|
|
my $goodtabindent = $oldindent .
|
|
|
- "\t" x ($pos / 8) .
|
|
|
- " " x ($pos % 8);
|
|
|
+ "\t" x ($pos / $tabsize) .
|
|
|
+ " " x ($pos % $tabsize);
|
|
|
my $goodspaceindent = $oldindent . " " x $pos;
|
|
|
|
|
|
if ($newindent ne $goodtabindent &&
|
|
@@ -3687,11 +3838,11 @@ sub process {
|
|
|
#print "line<$line> prevline<$prevline> indent<$indent> sindent<$sindent> check<$check> continuation<$continuation> s<$s> cond_lines<$cond_lines> stat_real<$stat_real> stat<$stat>\n";
|
|
|
|
|
|
if ($check && $s ne '' &&
|
|
|
- (($sindent % 8) != 0 ||
|
|
|
+ (($sindent % $tabsize) != 0 ||
|
|
|
($sindent < $indent) ||
|
|
|
($sindent == $indent &&
|
|
|
($s !~ /^\s*(?:\}|\{|else\b)/)) ||
|
|
|
- ($sindent > $indent + 8))) {
|
|
|
+ ($sindent > $indent + $tabsize))) {
|
|
|
WARN("SUSPECT_CODE_INDENT",
|
|
|
"suspect code indent for conditional statements ($indent, $sindent)\n" . $herecurr . "$stat_real\n");
|
|
|
}
|
|
@@ -3917,14 +4068,23 @@ sub process {
|
|
|
WARN("STATIC_CONST_CHAR_ARRAY",
|
|
|
"static const char * array should probably be static const char * const\n" .
|
|
|
$herecurr);
|
|
|
- }
|
|
|
+ }
|
|
|
+
|
|
|
+# check for initialized const char arrays that should be static const
|
|
|
+ if ($line =~ /^\+\s*const\s+(char|unsigned\s+char|_*u8|(?:[us]_)?int8_t)\s+\w+\s*\[\s*(?:\w+\s*)?\]\s*=\s*"/) {
|
|
|
+ if (WARN("STATIC_CONST_CHAR_ARRAY",
|
|
|
+ "const array should probably be static const\n" . $herecurr) &&
|
|
|
+ $fix) {
|
|
|
+ $fixed[$fixlinenr] =~ s/(^.\s*)const\b/${1}static const/;
|
|
|
+ }
|
|
|
+ }
|
|
|
|
|
|
# check for static char foo[] = "bar" declarations.
|
|
|
if ($line =~ /\bstatic\s+char\s+(\w+)\s*\[\s*\]\s*=\s*"/) {
|
|
|
WARN("STATIC_CONST_CHAR_ARRAY",
|
|
|
"static char array declaration should probably be static const char\n" .
|
|
|
$herecurr);
|
|
|
- }
|
|
|
+ }
|
|
|
|
|
|
# check for const <foo> const where <foo> is not a pointer or array type
|
|
|
if ($sline =~ /\bconst\s+($BasicType)\s+const\b/) {
|
|
@@ -3959,7 +4119,7 @@ sub process {
|
|
|
}
|
|
|
|
|
|
# check for function declarations without arguments like "int foo()"
|
|
|
- if ($line =~ /(\b$Type\s+$Ident)\s*\(\s*\)/) {
|
|
|
+ if ($line =~ /(\b$Type\s*$Ident)\s*\(\s*\)/) {
|
|
|
if (ERROR("FUNCTION_WITHOUT_ARGS",
|
|
|
"Bad function definition - $1() should probably be $1(void)\n" . $herecurr) &&
|
|
|
$fix) {
|
|
@@ -4070,15 +4230,6 @@ sub process {
|
|
|
"Prefer [subsystem eg: netdev]_$level2([subsystem]dev, ... then dev_$level2(dev, ... then pr_$level(... to printk(KERN_$orig ...\n" . $herecurr);
|
|
|
}
|
|
|
|
|
|
- if ($line =~ /\bpr_warning\s*\(/) {
|
|
|
- if (WARN("PREFER_PR_LEVEL",
|
|
|
- "Prefer pr_warn(... to pr_warning(...\n" . $herecurr) &&
|
|
|
- $fix) {
|
|
|
- $fixed[$fixlinenr] =~
|
|
|
- s/\bpr_warning\b/pr_warn/;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
if ($line =~ /\bdev_printk\s*\(\s*KERN_([A-Z]+)/) {
|
|
|
my $orig = $1;
|
|
|
my $level = lc($orig);
|
|
@@ -4536,7 +4687,7 @@ sub process {
|
|
|
($op eq '>' &&
|
|
|
$ca =~ /<\S+\@\S+$/))
|
|
|
{
|
|
|
- $ok = 1;
|
|
|
+ $ok = 1;
|
|
|
}
|
|
|
|
|
|
# for asm volatile statements
|
|
@@ -4632,7 +4783,7 @@ sub process {
|
|
|
|
|
|
# closing brace should have a space following it when it has anything
|
|
|
# on the line
|
|
|
- if ($line =~ /}(?!(?:,|;|\)))\S/) {
|
|
|
+ if ($line =~ /}(?!(?:,|;|\)|\}))\S/) {
|
|
|
if (ERROR("SPACING",
|
|
|
"space required after that close brace '}'\n" . $herecurr) &&
|
|
|
$fix) {
|
|
@@ -4871,7 +5022,7 @@ sub process {
|
|
|
# conditional.
|
|
|
substr($s, 0, length($c), '');
|
|
|
$s =~ s/\n.*//g;
|
|
|
- $s =~ s/$;//g; # Remove any comments
|
|
|
+ $s =~ s/$;//g; # Remove any comments
|
|
|
if (length($c) && $s !~ /^\s*{?\s*\\*\s*$/ &&
|
|
|
$c !~ /}\s*while\s*/)
|
|
|
{
|
|
@@ -4910,7 +5061,7 @@ sub process {
|
|
|
# if and else should not have general statements after it
|
|
|
if ($line =~ /^.\s*(?:}\s*)?else\b(.*)/) {
|
|
|
my $s = $1;
|
|
|
- $s =~ s/$;//g; # Remove any comments
|
|
|
+ $s =~ s/$;//g; # Remove any comments
|
|
|
if ($s !~ /^\s*(?:\sif|(?:{|)\s*\\?\s*$)/) {
|
|
|
ERROR("TRAILING_STATEMENTS",
|
|
|
"trailing statements should be on next line\n" . $herecurr);
|
|
@@ -4982,24 +5133,14 @@ sub process {
|
|
|
while ($line =~ m{($Constant|$Lval)}g) {
|
|
|
my $var = $1;
|
|
|
|
|
|
-#gcc binary extension
|
|
|
- if ($var =~ /^$Binary$/) {
|
|
|
- if (WARN("GCC_BINARY_CONSTANT",
|
|
|
- "Avoid gcc v4.3+ binary constant extension: <$var>\n" . $herecurr) &&
|
|
|
- $fix) {
|
|
|
- my $hexval = sprintf("0x%x", oct($var));
|
|
|
- $fixed[$fixlinenr] =~
|
|
|
- s/\b$var\b/$hexval/;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
#CamelCase
|
|
|
if ($var !~ /^$Constant$/ &&
|
|
|
$var =~ /[A-Z][a-z]|[a-z][A-Z]/ &&
|
|
|
#Ignore Page<foo> variants
|
|
|
$var !~ /^(?:Clear|Set|TestClear|TestSet|)Page[A-Z]/ &&
|
|
|
-#Ignore SI style variants like nS, mV and dB (ie: max_uV, regulator_min_uA_show)
|
|
|
- $var !~ /^(?:[a-z_]*?)_?[a-z][A-Z](?:_[a-z_]+)?$/ &&
|
|
|
+#Ignore SI style variants like nS, mV and dB
|
|
|
+#(ie: max_uV, regulator_min_uA_show, RANGE_mA_VALUE)
|
|
|
+ $var !~ /^(?:[a-z0-9_]*|[A-Z0-9_]*)?_?[a-z][A-Z](?:_[a-z0-9_]+|_[A-Z0-9_]+)?$/ &&
|
|
|
#Ignore some three character SI units explicitly, like MiB and KHz
|
|
|
$var !~ /^(?:[a-z_]*?)_?(?:[KMGT]iB|[KMGT]?Hz)(?:_[a-z_]+)?$/) {
|
|
|
while ($var =~ m{($Ident)}g) {
|
|
@@ -5096,7 +5237,7 @@ sub process {
|
|
|
{
|
|
|
}
|
|
|
|
|
|
- # Flatten any obvious string concatentation.
|
|
|
+ # Flatten any obvious string concatenation.
|
|
|
while ($dstat =~ s/($String)\s*$Ident/$1/ ||
|
|
|
$dstat =~ s/$Ident\s*($String)/$1/)
|
|
|
{
|
|
@@ -5174,7 +5315,7 @@ sub process {
|
|
|
next if ($arg =~ /\.\.\./);
|
|
|
next if ($arg =~ /^type$/i);
|
|
|
my $tmp_stmt = $define_stmt;
|
|
|
- $tmp_stmt =~ s/\b(typeof|__typeof__|__builtin\w+|typecheck\s*\(\s*$Type\s*,|\#+)\s*\(*\s*$arg\s*\)*\b//g;
|
|
|
+ $tmp_stmt =~ s/\b(sizeof|typeof|__typeof__|__builtin\w+|typecheck\s*\(\s*$Type\s*,|\#+)\s*\(*\s*$arg\s*\)*\b//g;
|
|
|
$tmp_stmt =~ s/\#+\s*$arg\b//g;
|
|
|
$tmp_stmt =~ s/\b$arg\s*\#\#//g;
|
|
|
my $use_cnt = () = $tmp_stmt =~ /\b$arg\b/g;
|
|
@@ -5573,7 +5714,8 @@ sub process {
|
|
|
my ($s, $c) = ctx_statement_block($linenr - 3, $realcnt, 0);
|
|
|
# print("line: <$line>\nprevline: <$prevline>\ns: <$s>\nc: <$c>\n\n\n");
|
|
|
|
|
|
- if ($s =~ /(?:^|\n)[ \+]\s*(?:$Type\s*)?\Q$testval\E\s*=\s*(?:\([^\)]*\)\s*)?\s*(?:devm_)?(?:[kv][czm]alloc(?:_node|_array)?\b|kstrdup|kmemdup|(?:dev_)?alloc_skb)/) {
|
|
|
+ if ($s =~ /(?:^|\n)[ \+]\s*(?:$Type\s*)?\Q$testval\E\s*=\s*(?:\([^\)]*\)\s*)?\s*$allocFunctions\s*\(/ &&
|
|
|
+ $s !~ /\b__GFP_NOWARN\b/ ) {
|
|
|
WARN("OOM_MESSAGE",
|
|
|
"Possible unnecessary 'out of memory' message\n" . $hereprev);
|
|
|
}
|
|
@@ -5694,7 +5836,7 @@ sub process {
|
|
|
# ignore udelay's < 10, however
|
|
|
if (! ($delay < 10) ) {
|
|
|
CHK("USLEEP_RANGE",
|
|
|
- "usleep_range is preferred over udelay; see Documentation/timers/timers-howto.txt\n" . $herecurr);
|
|
|
+ "usleep_range is preferred over udelay; see Documentation/timers/timers-howto.rst\n" . $herecurr);
|
|
|
}
|
|
|
if ($delay > 2000) {
|
|
|
WARN("LONG_UDELAY",
|
|
@@ -5706,7 +5848,7 @@ sub process {
|
|
|
if ($line =~ /\bmsleep\s*\((\d+)\);/) {
|
|
|
if ($1 < 20) {
|
|
|
WARN("MSLEEP",
|
|
|
- "msleep < 20ms can sleep for up to 20ms; see Documentation/timers/timers-howto.txt\n" . $herecurr);
|
|
|
+ "msleep < 20ms can sleep for up to 20ms; see Documentation/timers/timers-howto.rst\n" . $herecurr);
|
|
|
}
|
|
|
}
|
|
|
|
|
@@ -5855,6 +5997,18 @@ sub process {
|
|
|
"__aligned(size) is preferred over __attribute__((aligned(size)))\n" . $herecurr);
|
|
|
}
|
|
|
|
|
|
+# Check for __attribute__ section, prefer __section
|
|
|
+ if ($realfile !~ m@\binclude/uapi/@ &&
|
|
|
+ $line =~ /\b__attribute__\s*\(\s*\(.*_*section_*\s*\(\s*("[^"]*")/) {
|
|
|
+ my $old = substr($rawline, $-[1], $+[1] - $-[1]);
|
|
|
+ my $new = substr($old, 1, -1);
|
|
|
+ if (WARN("PREFER_SECTION",
|
|
|
+ "__section($new) is preferred over __attribute__((section($old)))\n" . $herecurr) &&
|
|
|
+ $fix) {
|
|
|
+ $fixed[$fixlinenr] =~ s/\b__attribute__\s*\(\s*\(\s*_*section_*\s*\(\s*\Q$old\E\s*\)\s*\)\s*\)/__section($new)/;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
# Check for __attribute__ format(printf, prefer __printf
|
|
|
if ($realfile !~ m@\binclude/uapi/@ &&
|
|
|
$line =~ /\b__attribute__\s*\(\s*\(\s*format\s*\(\s*printf/) {
|
|
@@ -5970,14 +6124,18 @@ sub process {
|
|
|
for (my $count = $linenr; $count <= $lc; $count++) {
|
|
|
my $specifier;
|
|
|
my $extension;
|
|
|
+ my $qualifier;
|
|
|
my $bad_specifier = "";
|
|
|
my $fmt = get_quoted_string($lines[$count - 1], raw_line($count, 0));
|
|
|
$fmt =~ s/%%//g;
|
|
|
|
|
|
- while ($fmt =~ /(\%[\*\d\.]*p(\w))/g) {
|
|
|
+ while ($fmt =~ /(\%[\*\d\.]*p(\w)(\w*))/g) {
|
|
|
$specifier = $1;
|
|
|
$extension = $2;
|
|
|
- if ($extension !~ /[SsBKRraEhMmIiUDdgVCbGNOx]/) {
|
|
|
+ $qualifier = $3;
|
|
|
+ if ($extension !~ /[SsBKRraEehMmIiUDdgVCbGNOxtf]/ ||
|
|
|
+ ($extension eq "f" &&
|
|
|
+ defined $qualifier && $qualifier !~ /^w/)) {
|
|
|
$bad_specifier = $specifier;
|
|
|
last;
|
|
|
}
|
|
@@ -5994,7 +6152,6 @@ sub process {
|
|
|
my $ext_type = "Invalid";
|
|
|
my $use = "";
|
|
|
if ($bad_specifier =~ /p[Ff]/) {
|
|
|
- $ext_type = "Deprecated";
|
|
|
$use = " - use %pS instead";
|
|
|
$use =~ s/pS/ps/ if ($bad_specifier =~ /pf/);
|
|
|
}
|
|
@@ -6097,11 +6254,11 @@ sub process {
|
|
|
my $max = $7;
|
|
|
if ($min eq $max) {
|
|
|
WARN("USLEEP_RANGE",
|
|
|
- "usleep_range should not use min == max args; see Documentation/timers/timers-howto.txt\n" . "$here\n$stat\n");
|
|
|
+ "usleep_range should not use min == max args; see Documentation/timers/timers-howto.rst\n" . "$here\n$stat\n");
|
|
|
} elsif ($min =~ /^\d+$/ && $max =~ /^\d+$/ &&
|
|
|
$min > $max) {
|
|
|
WARN("USLEEP_RANGE",
|
|
|
- "usleep_range args reversed, use min then max; see Documentation/timers/timers-howto.txt\n" . "$here\n$stat\n");
|
|
|
+ "usleep_range args reversed, use min then max; see Documentation/timers/timers-howto.rst\n" . "$here\n$stat\n");
|
|
|
}
|
|
|
}
|
|
|
|
|
@@ -6178,13 +6335,17 @@ sub process {
|
|
|
}
|
|
|
|
|
|
# check for function declarations that have arguments without identifier names
|
|
|
+# while avoiding uninitialized_var(x)
|
|
|
if (defined $stat &&
|
|
|
- $stat =~ /^.\s*(?:extern\s+)?$Type\s*(?:$Ident|\(\s*\*\s*$Ident\s*\))\s*\(\s*([^{]+)\s*\)\s*;/s &&
|
|
|
- $1 ne "void") {
|
|
|
- my $args = trim($1);
|
|
|
+ $stat =~ /^.\s*(?:extern\s+)?$Type\s*(?:($Ident)|\(\s*\*\s*$Ident\s*\))\s*\(\s*([^{]+)\s*\)\s*;/s &&
|
|
|
+ (!defined($1) ||
|
|
|
+ (defined($1) && $1 ne "uninitialized_var")) &&
|
|
|
+ $2 ne "void") {
|
|
|
+ my $args = trim($2);
|
|
|
while ($args =~ m/\s*($Type\s*(?:$Ident|\(\s*\*\s*$Ident?\s*\)\s*$balanced_parens)?)/g) {
|
|
|
my $arg = trim($1);
|
|
|
- if ($arg =~ /^$Type$/ && $arg !~ /enum\s+$Ident$/) {
|
|
|
+ if ($arg =~ /^$Type$/ &&
|
|
|
+ $arg !~ /enum\s+$Ident$/) {
|
|
|
WARN("FUNCTION_ARGUMENTS",
|
|
|
"function definition argument '$arg' should also have an identifier name\n" . $herecurr);
|
|
|
}
|
|
@@ -6224,8 +6385,8 @@ sub process {
|
|
|
}
|
|
|
}
|
|
|
|
|
|
-# check for pointless casting of kmalloc return
|
|
|
- if ($line =~ /\*\s*\)\s*[kv][czm]alloc(_node){0,1}\b/) {
|
|
|
+# check for pointless casting of alloc functions
|
|
|
+ if ($line =~ /\*\s*\)\s*$allocFunctions\b/) {
|
|
|
WARN("UNNECESSARY_CASTS",
|
|
|
"unnecessary cast may hide bugs, see http://c-faq.com/malloc/mallocnocast.html\n" . $herecurr);
|
|
|
}
|
|
@@ -6233,7 +6394,7 @@ sub process {
|
|
|
# alloc style
|
|
|
# p = alloc(sizeof(struct foo), ...) should be p = alloc(sizeof(*p), ...)
|
|
|
if ($perl_version_ok &&
|
|
|
- $line =~ /\b($Lval)\s*\=\s*(?:$balanced_parens)?\s*([kv][mz]alloc(?:_node)?)\s*\(\s*(sizeof\s*\(\s*struct\s+$Lval\s*\))/) {
|
|
|
+ $line =~ /\b($Lval)\s*\=\s*(?:$balanced_parens)?\s*((?:kv|k|v)[mz]alloc(?:_node)?)\s*\(\s*(sizeof\s*\(\s*struct\s+$Lval\s*\))/) {
|
|
|
CHK("ALLOC_SIZEOF_STRUCT",
|
|
|
"Prefer $3(sizeof(*$1)...) over $3($4...)\n" . $herecurr);
|
|
|
}
|
|
@@ -6337,6 +6498,28 @@ sub process {
|
|
|
}
|
|
|
}
|
|
|
|
|
|
+# check for /* fallthrough */ like comment, prefer fallthrough;
|
|
|
+ my @fallthroughs = (
|
|
|
+ 'fallthrough',
|
|
|
+ '@fallthrough@',
|
|
|
+ 'lint -fallthrough[ \t]*',
|
|
|
+ 'intentional(?:ly)?[ \t]*fall(?:(?:s | |-)[Tt]|t)hr(?:ough|u|ew)',
|
|
|
+ '(?:else,?\s*)?FALL(?:S | |-)?THR(?:OUGH|U|EW)[ \t.!]*(?:-[^\n\r]*)?',
|
|
|
+ 'Fall(?:(?:s | |-)[Tt]|t)hr(?:ough|u|ew)[ \t.!]*(?:-[^\n\r]*)?',
|
|
|
+ 'fall(?:s | |-)?thr(?:ough|u|ew)[ \t.!]*(?:-[^\n\r]*)?',
|
|
|
+ );
|
|
|
+ if ($raw_comment ne '') {
|
|
|
+ foreach my $ft (@fallthroughs) {
|
|
|
+ if ($raw_comment =~ /$ft/) {
|
|
|
+ my $msg_level = \&WARN;
|
|
|
+ $msg_level = \&CHK if ($file);
|
|
|
+ &{$msg_level}("PREFER_FALLTHROUGH",
|
|
|
+ "Prefer 'fallthrough;' over fallthrough comment\n" . $herecurr);
|
|
|
+ last;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
# check for switch/default statements without a break;
|
|
|
if ($perl_version_ok &&
|
|
|
defined $stat &&
|
|
@@ -6396,19 +6579,6 @@ sub process {
|
|
|
}
|
|
|
}
|
|
|
|
|
|
-# check for bool bitfields
|
|
|
- if ($sline =~ /^.\s+bool\s*$Ident\s*:\s*\d+\s*;/) {
|
|
|
- WARN("BOOL_BITFIELD",
|
|
|
- "Avoid using bool as bitfield. Prefer bool bitfields as unsigned int or u<8|16|32>\n" . $herecurr);
|
|
|
- }
|
|
|
-
|
|
|
-# check for bool use in .h files
|
|
|
- if ($realfile =~ /\.h$/ &&
|
|
|
- $sline =~ /^.\s+bool\s*$Ident\s*(?::\s*d+\s*)?;/) {
|
|
|
- CHK("BOOL_MEMBER",
|
|
|
- "Avoid using bool structure members because of possible alignment issues - see: https://lkml.org/lkml/2017/11/21/384\n" . $herecurr);
|
|
|
- }
|
|
|
-
|
|
|
# check for semaphores initialized locked
|
|
|
if ($line =~ /^.\s*sema_init.+,\W?0\W?\)/) {
|
|
|
WARN("CONSIDER_COMPLETION",
|
|
@@ -6427,6 +6597,20 @@ sub process {
|
|
|
"please use device_initcall() or more appropriate function instead of __initcall() (see include/linux/init.h)\n" . $herecurr);
|
|
|
}
|
|
|
|
|
|
+# check for spin_is_locked(), suggest lockdep instead
|
|
|
+ if ($line =~ /\bspin_is_locked\(/) {
|
|
|
+ WARN("USE_LOCKDEP",
|
|
|
+ "Where possible, use lockdep_assert_held instead of assertions based on spin_is_locked\n" . $herecurr);
|
|
|
+ }
|
|
|
+
|
|
|
+# check for deprecated apis
|
|
|
+ if ($line =~ /\b($deprecated_apis_search)\b\s*\(/) {
|
|
|
+ my $deprecated_api = $1;
|
|
|
+ my $new_api = $deprecated_apis{$deprecated_api};
|
|
|
+ WARN("DEPRECATED_API",
|
|
|
+ "Deprecated use of '$deprecated_api', prefer '$new_api' instead\n" . $herecurr);
|
|
|
+ }
|
|
|
+
|
|
|
# check for various structs that are normally const (ops, kgdb, device_tree)
|
|
|
# and avoid what seem like struct definitions 'struct foo {'
|
|
|
if ($line !~ /\bconst\b/ &&
|
|
@@ -6461,6 +6645,12 @@ sub process {
|
|
|
"Using $1 should generally have parentheses around the comparison\n" . $herecurr);
|
|
|
}
|
|
|
|
|
|
+# nested likely/unlikely calls
|
|
|
+ if ($line =~ /\b(?:(?:un)?likely)\s*\(\s*!?\s*(IS_ERR(?:_OR_NULL|_VALUE)?|WARN)/) {
|
|
|
+ WARN("LIKELY_MISUSE",
|
|
|
+ "nested (un)?likely() calls, $1 already uses unlikely() internally\n" . $herecurr);
|
|
|
+ }
|
|
|
+
|
|
|
# whine mightly about in_atomic
|
|
|
if ($line =~ /\bin_atomic\s*\(/) {
|
|
|
if ($realfile =~ m@^drivers/@) {
|
|
@@ -6620,6 +6810,12 @@ sub process {
|
|
|
"unknown module license " . $extracted_string . "\n" . $herecurr);
|
|
|
}
|
|
|
}
|
|
|
+
|
|
|
+# check for sysctl duplicate constants
|
|
|
+ if ($line =~ /\.extra[12]\s*=\s*&(zero|one|int_max)\b/) {
|
|
|
+ WARN("DUPLICATED_SYSCTL_CONST",
|
|
|
+ "duplicated sysctl range checking value '$1', consider using the shared one in include/linux/sysctl.h\n" . $herecurr);
|
|
|
+ }
|
|
|
}
|
|
|
|
|
|
# If we have no input at all, then there is nothing to report on
|