[PATCH] checkpatch: enhance check for seq_printf uses that could be seq_puts

[Heba Aamer <heba93aamer@gmail.com>]

This patch enhances the check for seq_printf uses that could
be seq_puts.

It was considering the escape of % is \%, but it is %%.
This led to skipping some valid cases related to that warning.  

Signed-off-by: Heba Aamer <heba93aamer@gmail.com>
---
 scripts/checkpatch.pl |   13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index f0bb6d6..0b125ca 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -4804,11 +4804,14 @@ sub process {
 # check for seq_printf uses that could be seq_puts
 		if ($sline =~ /\bseq_printf\s*\(.*"\s*\)\s*;\s*$/) {
 			my $fmt = get_quoted_string($line, $rawline);
-			if ($fmt ne "" && $fmt !~ /[^\\]\%/) {
-				if (WARN("PREFER_SEQ_PUTS",
-					 "Prefer seq_puts to seq_printf\n" . $herecurr) &&
-				    $fix) {
-					$fixed[$fixlinenr] =~ s/\bseq_printf\b/seq_puts/;
+			if ($fmt ne "") {
+				$fmt =~ s/%%//g;
+				if ($fmt !~ /%/) {
+					if (WARN("PREFER_SEQ_PUTS",
+						 "Prefer seq_puts to seq_printf\n" . $herecurr) &&
+					    $fix) {
+						$fixed[$fixlinenr] =~ s/\bseq_printf\b/seq_puts/;
+					}
 				}
 			}
 		}
-- 
1.7.9.5