4.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Cyril Bur <cyrilbur@xxxxxxxxx> commit 8d81ae05d0176da1c54aeaed697fa34be5c5575e upstream. As of perl 5, version 26, subversion 0 (v5.26.0) some new warnings have occurred when running checkpatch. Unescaped left brace in regex is deprecated here (and will be fatal in Perl 5.30), passed through in regex; marked by <-- HERE in m/^(.\s*){ <-- HERE \s*/ at scripts/checkpatch.pl line 3544. Unescaped left brace in regex is deprecated here (and will be fatal in Perl 5.30), passed through in regex; marked by <-- HERE in m/^(.\s*){ <-- HERE \s*/ at scripts/checkpatch.pl line 3885. Unescaped left brace in regex is deprecated here (and will be fatal in Perl 5.30), passed through in regex; marked by <-- HERE in m/^(\+.*(?:do|\))){ <-- HERE / at scripts/checkpatch.pl line 4374. It seems perfectly reasonable to do as the warning suggests and simply escape the left brace in these three locations. Link: http://lkml.kernel.org/r/20170607060135.17384-1-cyrilbur@xxxxxxxxx Signed-off-by: Cyril Bur <cyrilbur@xxxxxxxxx> Acked-by: Joe Perches <joe@xxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- scripts/checkpatch.pl | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -3541,7 +3541,7 @@ sub process { $fixedline =~ s/\s*=\s*$/ = {/; fix_insert_line($fixlinenr, $fixedline); $fixedline = $line; - $fixedline =~ s/^(.\s*){\s*/$1/; + $fixedline =~ s/^(.\s*)\{\s*/$1/; fix_insert_line($fixlinenr, $fixedline); } } @@ -3882,7 +3882,7 @@ sub process { my $fixedline = rtrim($prevrawline) . " {"; fix_insert_line($fixlinenr, $fixedline); $fixedline = $rawline; - $fixedline =~ s/^(.\s*){\s*/$1\t/; + $fixedline =~ s/^(.\s*)\{\s*/$1\t/; if ($fixedline !~ /^\+\s*$/) { fix_insert_line($fixlinenr, $fixedline); } @@ -4371,7 +4371,7 @@ sub process { if (ERROR("SPACING", "space required before the open brace '{'\n" . $herecurr) && $fix) { - $fixed[$fixlinenr] =~ s/^(\+.*(?:do|\))){/$1 {/; + $fixed[$fixlinenr] =~ s/^(\+.*(?:do|\)))\{/$1 {/; } }