checkpatch: add a fixer for missing newline at eof

Remove the trailing error message from the fixed lines.

Link: https://lkml.kernel.org/r/20201017142546.28988-1-trix@redhat.com
Signed-off-by: Tom Rix <trix@redhat.com>
Acked-by: Joe Perches <joe@perches.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 92949b8c5c7607e1a5a774566fcca91b157051c1..7800a090e8fe004b71541beb493a0e794d2f4eed 100755 (executable)
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3418,8 +3418,11 @@ sub process {
 
 # check for adding lines without a newline.
                if ($line =~ /^\+/ && defined $lines[$linenr] && $lines[$linenr] =~ /^\\ No newline at end of file/) {
-                       WARN("MISSING_EOF_NEWLINE",
-                            "adding a line without newline at end of file\n" . $herecurr);
+                       if (WARN("MISSING_EOF_NEWLINE",
+                                "adding a line without newline at end of file\n" . $herecurr) &&
+                           $fix) {
+                               fix_delete_line($fixlinenr+1, "No newline at end of file");
+                       }
                }
 
 # check we are in a valid source file C or perl if not then ignore this hunk