checkpatch: update seq_<foo> tests

seq_vprintf, seq_printf and seq_puts are logging functions and should be
allowed to exceed the maximium line length.

Add maximum line length exceptions for these functions.

Also, suggesting seq_printf conversions to seq_puts should be tested for
arguments after the format.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 4 insertions, 3 deletions

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index c03e4278b07c..42567bcd66b2 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -323,7 +323,8 @@ our $logFunctions = qr{(?x:
         (?:[a-z0-9]+_){1,2}(?:printk|emerg|alert|crit|err|warning|warn|notice|info|debug|dbg|vdbg|devel|cont|WARN)(?:_ratelimited|_once|)|
         WARN(?:_RATELIMIT|_ONCE|)|
         panic|
-        MODULE_[A-Z_]+
+        MODULE_[A-Z_]+|
+        seq_vprintf|seq_printf|seq_puts
 )};
 
 our $signature_tags = qr{(?xi:
@@ -3909,9 +3910,9 @@ sub string_find_replace {
                 }
 
 # check for seq_printf uses that could be seq_puts
-                if ($line =~ /\bseq_printf\s*\(/) {
+                if ($sline =~ /\bseq_printf\s*\(.*"\s*\)\s*;\s*$/) {
                         my $fmt = get_quoted_string($line, $rawline);
-                        if ($fmt !~ /[^\\]\%/) {
+                        if ($fmt ne "" && $fmt !~ /[^\\]\%/) {
                                 if (WARN("PREFER_SEQ_PUTS",
                                          "Prefer seq_puts to seq_printf\n" . $herecurr) &&
                                     $fix) {