I always have troubles to parse checkpatch.pl output when I check
the whole patchset. It is hard to say which messages belongs to
what patch.

This patch does few small changes to make the output look better
for me:

    + delimit each patch from each other with dashes and empty line
    + remove empty line after the summary
    + print message about false positives only once

Output without this patch:
==========================

total: 0 errors, 0 warnings, 133 lines checked

0015-ring_buffer-Use-iterant-kthreads-API-in-the-ring-buf.patch has no obvious 
style problems and is ready for submission.
total: 0 errors, 0 warnings, 73 lines checked

0016-ring_buffer-Allow-to-cleanly-freeze-the-ring-buffer-.patch has no obvious 
style problems and is ready for submission.
total: 0 errors, 0 warnings, 25 lines checked

0017-ring_buffer-Allow-to-exit-the-ring-buffer-benchmark-.patch has no obvious 
style problems and is ready for submission.
ERROR: Missing Signed-off-by: line(s)

total: 1 errors, 0 warnings, 70 lines checked

0018-kthread-Add-support-for-iteruptible-sleep-with-timeo.patch has style 
problems, please review.

If any of these errors are false positives, please report
them to the maintainer, see CHECKPATCH in MAINTAINERS.
ERROR: Missing Signed-off-by: line(s)

total: 1 errors, 0 warnings, 34 lines checked

0019-kthread-Allow-to-remove-pause-between-threads-in-ite.patch has style 
problems, please review.

If any of these errors are false positives, please report
them to the maintainer, see CHECKPATCH in MAINTAINERS.
ERROR: Missing Signed-off-by: line(s)

total: 1 errors, 0 warnings, 12 lines checked

0020-ring_buffer-Use-the-new-API-for-timeouted-sleep-in-t.patch has style 
problems, please review.

If any of these errors are false positives, please report
them to the maintainer, see CHECKPATCH in MAINTAINERS.
ERROR: Missing Signed-off-by: line(s)

total: 1 errors, 0 warnings, 37 lines checked

0021-jffs2-debug-messages.patch has style problems, please review.

If any of these errors are false positives, please report
them to the maintainer, see CHECKPATCH in MAINTAINERS.
ERROR: Missing Signed-off-by: line(s)

total: 1 errors, 0 warnings, 28 lines checked

0022-test-messages-in-ring_buffer_benchmnark.patch has style problems, please 
review.

If any of these errors are false positives, please report
them to the maintainer, see CHECKPATCH in MAINTAINERS.
ERROR: Missing Signed-off-by: line(s)

total: 1 errors, 0 warnings, 7 lines checked

0023-debug-messages-in-lockd.patch has style problems, please review.

If any of these errors are false positives, please report
them to the maintainer, see CHECKPATCH in MAINTAINERS.

Output with this patch:
=======================

total: 0 errors, 0 warnings, 133 lines checked
0015-ring_buffer-Use-iterant-kthreads-API-in-the-ring-buf.patch has no obvious 
style problems and is ready for submission.
--------------------------------------------------------------------------------

total: 0 errors, 0 warnings, 73 lines checked
0016-ring_buffer-Allow-to-cleanly-freeze-the-ring-buffer-.patch has no obvious 
style problems and is ready for submission.
--------------------------------------------------------------------------------

total: 0 errors, 0 warnings, 25 lines checked
0017-ring_buffer-Allow-to-exit-the-ring-buffer-benchmark-.patch has no obvious 
style problems and is ready for submission.
--------------------------------------------------------------------------------

ERROR: Missing Signed-off-by: line(s)

total: 1 errors, 0 warnings, 70 lines checked
0018-kthread-Add-support-for-iteruptible-sleep-with-timeo.patch has style 
problems, please review.
--------------------------------------------------------------------------------

ERROR: Missing Signed-off-by: line(s)

total: 1 errors, 0 warnings, 34 lines checked
0019-kthread-Allow-to-remove-pause-between-threads-in-ite.patch has style 
problems, please review.
--------------------------------------------------------------------------------

ERROR: Missing Signed-off-by: line(s)

total: 1 errors, 0 warnings, 12 lines checked
0020-ring_buffer-Use-the-new-API-for-timeouted-sleep-in-t.patch has style 
problems, please review.
--------------------------------------------------------------------------------

ERROR: Missing Signed-off-by: line(s)

total: 1 errors, 0 warnings, 37 lines checked
0021-jffs2-debug-messages.patch has style problems, please review.
--------------------------------------------------------------------------------

ERROR: Missing Signed-off-by: line(s)

total: 1 errors, 0 warnings, 28 lines checked
0022-test-messages-in-ring_buffer_benchmnark.patch has style problems, please 
review.
--------------------------------------------------------------------------------

ERROR: Missing Signed-off-by: line(s)

total: 1 errors, 0 warnings, 7 lines checked
0023-debug-messages-in-lockd.patch has style problems, please review.

If any of the errors are false positives, please report
them to the maintainer, see CHECKPATCH in MAINTAINERS.

Signed-off-by: Petr Mladek <[email protected]>
---
 scripts/checkpatch.pl | 22 +++++++++++++++-------
 1 file changed, 15 insertions(+), 7 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index c8032a01d7cf..7022138b14cb 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -720,8 +720,14 @@ my @fixed_deleted = ();
 my $fixlinenr = -1;
 
 my $vname;
+my $filenum = 0;
 for my $filename (@ARGV) {
        my $FILE;
+
+       if ($filenum++ && $quiet == 0) {
+               print 
"--------------------------------------------------------------------------------\n";
+               print "\n";
+       }
        if ($file) {
                open($FILE, '-|', "diff -u /dev/null $filename") ||
                        die "$P: $filename: diff failed - $!\n";
@@ -755,6 +761,14 @@ for my $filename (@ARGV) {
        build_types();
 }
 
+if ($exit && $quiet == 0) {
+       print << "EOM";
+
+If any of the errors are false positives, please report
+them to the maintainer, see CHECKPATCH in MAINTAINERS.
+EOM
+}
+
 exit($exit);
 
 sub top_of_kernel_tree {
@@ -5578,7 +5592,6 @@ sub process {
                print "total: $cnt_error errors, $cnt_warn warnings, " .
                        (($check)? "$cnt_chk checks, " : "") .
                        "$cnt_lines lines checked\n";
-               print "\n" if ($quiet == 0);
        }
 
        if ($quiet == 0) {
@@ -5643,12 +5656,7 @@ EOM
                print "$vname has no obvious style problems and is ready for 
submission.\n"
        }
        if ($clean == 0 && $quiet == 0) {
-               print << "EOM";
-$vname has style problems, please review.
-
-If any of these errors are false positives, please report
-them to the maintainer, see CHECKPATCH in MAINTAINERS.
-EOM
+               print "$vname has style problems, please review.\n"
        }
 
        return $clean;
-- 
1.8.5.6

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