+ checkpatch-trailing-statements-ensure-we-report-the-end-of-the-line.patch added to -mm tree

[akpm@linux-foundation.org]

The patch titled
     checkpatch: trailing statements ensure we report the end of the line
has been added to the -mm tree.  Its filename is
     checkpatch-trailing-statements-ensure-we-report-the-end-of-the-line.patch

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------------------------------------------------------
Subject: checkpatch: trailing statements ensure we report the end of the line
From: Andy Whitcroft <apw@shadowen.org>

When reporting some complex trailing statements we report only the
starting line of the error, that tends to imply the shown line is in error
and confuse the reader.  As we do know where the actual error is report
that line too with an appropriate gap marker where applicable.

    #ERROR: trailing statements should be on next line
    #1: FILE: Z202.c:1:
    +       for (pbh = page_buffers(bh->b_page); pbh != bh;
    +               pbh = pbh->b_this_page, key++);
    #ERROR: trailing statements should be on next line
    #4: FILE: Z202.c:4:
    +       for (pbh = page_buffers(bh->b_page);
    [...]
    +               pbh = pbh->b_this_page, key++);

Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 scripts/checkpatch.pl |   11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff -puN scripts/checkpatch.pl~checkpatch-trailing-statements-ensure-we-report-the-end-of-the-line scripts/checkpatch.pl
--- a/scripts/checkpatch.pl~checkpatch-trailing-statements-ensure-we-report-the-end-of-the-line
+++ a/scripts/checkpatch.pl
@@ -2001,7 +2001,16 @@ sub process {
 			if (length($c) && $s !~ /^\s*{?\s*\\*\s*$/ &&
 			    $c !~ /}\s*while\s*/)
 			{
-				ERROR("trailing statements should be on next line\n" . $herecurr);
+				# Find out how long the conditional actually is.
+				my @newlines = ($c =~ /\n/gs);
+				my $cond_lines = 1 + $#newlines;
+
+				my $stat_real = raw_line($linenr, $cond_lines);
+				if (defined($stat_real) && $cond_lines > 1) {
+					$stat_real = "[...]\n$stat_real";
+				}
+
+				ERROR("trailing statements should be on next line\n" . $herecurr . $stat_real);
 			}
 		}
 
_

Patches currently in -mm which might be from apw@shadowen.org are

mm-hugetlbc-make-functions-static-use-null-rather-than-0.patch
checkpatch-square-brackets-exemption-for-array-slices-in-braces.patch
checkpatch-values-double-ampersand-may-be-unary.patch
checkpatch-conditional-indent-labels-have-different-indent-rules.patch
checkpatch-switch-indent-allow-plain-return.patch
checkpatch-add-tests-for-the-attribute-matcher.patch
checkpatch-____cacheline_aligned-et-al-are-modifiers.patch
checkpatch-complex-macros-fix-up-extension-handling.patch
checkpatch-fix-up-comment-checks-search-to-scan-the-entire-block.patch
checkpatch-include-asm-checks-should-be-anchored.patch
checkpatch-reduce-warnings-for-include-of-asm-fooh-to-check-from-arch-barc.patch
checkpatch-report-any-absolute-references-to-kernel-source-files.patch
checkpatch-report-the-real-first-line-of-all-suspect-indents.patch
checkpatch-suspect-indent-skip-over-preprocessor-label-and-blank-lines.patch
checkpatch-%lx-tests-should-hand-%%-as-a-literal.patch
checkpatch-report-the-correct-lines-for-single-statement-blocks.patch
checkpatch-perform-indent-checks-on-perl.patch
checkpatch-version-022.patch
checkpatch-case-default-checks-should-only-check-changed-lines.patch
checkpatch-suppress-errors-triggered-by-short-patch.patch
checkpatch-handle-comment-quote-nesting-correctly.patch
checkpatch-check-line-endings-in-text-format-files.patch
checkpatch-suspect-indent-count-condition-lines-correctly.patch
checkpatch-ensure-we-only-apply-checks-to-the-lines-within-hunks.patch
checkpatch-version-023.patch
checkpatch-do-is-not-a-possible-type.patch
checkpatch-labels-are-not-possible-types.patch
checkpatch-handle-do-without-braces-if-we-have-enough-context.patch
checkpatch-macros-which-define-structure-members-are-not-complex.patch
checkpatch-accept-any-sized-le-be-type.patch
checkpatch-pull-out-known-acceptable-typedefs.patch
checkpatch-suspect-code-indent-must-stop-at-else-elif.patch
checkpatch-complex-macros-checks-miss-square-brackets.patch
checkpatch-define_-macros-are-real-definitions-for-exports.patch
checkpatch-trailing-statements-ensure-we-report-the-end-of-the-line.patch
checkpatch-suspect-indent-handle-macro-continuation.patch
checkpatch-allow-for-comments-either-side-of-a-brace-on-case.patch
checkpatch-version-024.patch
page-owner-tracking-leak-detector.patch