checkpatch: Prefer seq_puts to seq_printf
Add a check for seq_printf use with a constant format without additional
arguments. Suggest seq_puts instead.
Signed-off-by: Joe Perches <joe@perches.com>
Suggested-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index a820249..b8b03aa 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -628,6 +628,13 @@
return $res;
}
+sub get_quoted_string {
+ my ($line, $rawline) = @_;
+
+ return "" if ($line !~ m/(\"[X]+\")/g);
+ return substr($rawline, $-[0], $+[0] - $-[0]);
+}
+
sub ctx_statement_block {
my ($linenr, $remain, $off) = @_;
my $line = $linenr - 1;
@@ -3373,6 +3380,15 @@
"struct spinlock should be spinlock_t\n" . $herecurr);
}
+# check for seq_printf uses that could be seq_puts
+ if ($line =~ /\bseq_printf\s*\(/) {
+ my $fmt = get_quoted_string($line, $rawline);
+ if ($fmt !~ /[^\\]\%/) {
+ WARN("PREFER_SEQ_PUTS",
+ "Prefer seq_puts to seq_printf\n" . $herecurr);
+ }
+ }
+
# Check for misused memsets
if ($^V && $^V ge 5.10.0 &&
defined $stat &&
