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checkpatch: avoid warning about uninitialized_var()

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WARNING: function definition argument 'flags' should also have an identifier name
#26: FILE: drivers/tty/serial/sh-sci.c:1348:
+       unsigned long uninitialized_var(flags);

Special-case uninitialized_var() to prevent this.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/7db7944761b0bd88c70eb17d4b7f40fe589e14ed.camel@perches.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Joe Perches 2020-04-06 20:11:17 -07:00 committed by Linus Torvalds
parent 50c9290021
commit 16b7f3c899
1 changed files with 9 additions and 5 deletions
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14
scripts/checkpatch.pl
View file

@ -4071,7 +4071,7 @@ 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) {
@ -6287,13 +6287,17 @@ 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);
}