1 files changed, 14 insertions, 4 deletions

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index d8670810db65..b0aa2c680593 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -210,10 +210,10 @@ our $typeTypedefs = qr{(?x:
 
 our $logFunctions = qr{(?x:
         printk|
-        pr_(debug|dbg|vdbg|devel|info|warning|err|notice|alert|crit|emerg|cont)|
-        (dev|netdev|netif)_(printk|dbg|vdbg|info|warn|err|notice|alert|crit|emerg|WARN)|
+        [a-z]+_(emerg|alert|crit|err|warning|warn|notice|info|debug|dbg|vdbg|devel|cont|WARN)|
         WARN|
-        panic
+        panic|
+        MODULE_[A-Z_]+
 )};
 
 our @typeList = (
@@ -1462,7 +1462,7 @@ sub process {
 #80 column limit
                 if ($line =~ /^\+/ && $prevrawline !~ /\/\*\*/ &&
                     $rawline !~ /^.\s*\*\s*\@$Ident\s/ &&
-                    !($line =~ /^\+\s*$logFunctions\s*\(\s*(?:(KERN_\S+\s*|[^"]*))?"[X\t]*"\s*(?:,|\)\s*;)\s*$/ ||
+                    !($line =~ /^\+\s*$logFunctions\s*\(\s*(?:(KERN_\S+\s*|[^"]*))?"[X\t]*"\s*(?:|,|\)\s*;)\s*$/ ||
                     $line =~ /^\+\s*"[^"]*"\s*(?:\s*|,|\)\s*;)\s*$/) &&
                     $length > 80)
                 {
@@ -1943,6 +1943,11 @@ sub process {
                         WARN("LINUX_VERSION_CODE should be avoided, code should be for the version to which it is merged\n" . $herecurr);
                 }
 
+# check for uses of printk_ratelimit
+                if ($line =~ /\bprintk_ratelimit\s*\(/) {
+                        WARN("Prefer printk_ratelimited or pr_<level>_ratelimited to printk_ratelimit\n" . $herecurr);
+                }
+
 # printk should use KERN_* levels.  Note that follow on printk's on the
 # same line do not need a level, so we use the current block context
 # to try and find and validate the current printk.  In summary the current
@@ -2748,6 +2753,11 @@ sub process {
                         WARN("sizeof(& should be avoided\n" . $herecurr);
                 }
 
+# check for line continuations in quoted strings with odd counts of "
+                if ($rawline =~ /\\$/ && $rawline =~ tr/"/"/ % 2) {
+                        WARN("Avoid line continuations in quoted strings\n" . $herecurr);
+                }
+
 # check for new externs in .c files.
                 if ($realfile =~ /\.c$/ && defined $stat &&
                     $stat =~ /^.\s*(?:extern\s+)?$Type\s+($Ident)(\s*)\(/s)