1 files changed, 15 insertions, 0 deletions

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 7a2f54a0bd35..de639eeeed50 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -1772,6 +1772,21 @@ sub process {
                              "line over 80 characters\n" . $herecurr);
                 }
 
+# Check for user-visible strings broken across lines, which breaks the ability
+# to grep for the string.  Limited to strings used as parameters (those
+# following an open parenthesis), which almost completely eliminates false
+# positives, as well as warning only once per parameter rather than once per
+# line of the string.  Make an exception when the previous string ends in a
+# newline (multiple lines in one string constant) or \n\t (common in inline
+# assembly to indent the instruction on the following line).
+                if ($line =~ /^\+\s*"/ &&
+                    $prevline =~ /"\s*$/ &&
+                    $prevline =~ /\(/ &&
+                    $prevrawline !~ /\\n(?:\\t)*"\s*$/) {
+                        WARN("SPLIT_STRING",
+                             "quoted string split across lines\n" . $hereprev);
+                }
+
 # check for spaces before a quoted newline
                 if ($rawline =~ /^.*\".*\s\\n/) {
                         WARN("QUOTED_WHITESPACE_BEFORE_NEWLINE",