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Subject[PATCH] checkpatch: Add test for assignment at start of line
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Date
Kernel style seems to prefer line wrapping an assignment
with the assignment operator on the previous line like:

<leading tabs> identifier =
expression;
over
<leading tabs> identifier
= expression;

somewhere around a 50:1 ratio

$ git grep -P "[^=]=\s*$" -- "*.[ch]" | wc -l
52008
$ git grep -P "^\s+[\*\/\+\|\%\-]?=[^=>]" | wc -l
1161

So add a --strict test for that condition.

Signed-off-by: Joe Perches <joe@perches.com>
---
scripts/checkpatch.pl | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 5fe361e1ed5e..af2b73f19605 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3062,6 +3062,12 @@ sub process {
}
}

+# check for assignments on the start of a line
+ if ($sline =~ /^\+\s+($Assignment)[^=]/) {
+ CHK("ASSIGNMENT_CONTINUATIONS",
+ "Assignment operator '$1' should be on the previous line\n" . $hereprev);
+ }
+
# check for && or || at the start of a line
if ($rawline =~ /^\+\s*(&&|\|\|)/) {
CHK("LOGICAL_CONTINUATIONS",
\
 
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