[PATCH] checkpatch: Ignore SI unit CamelCase variants like "_uV"

[Joe Perches]

Many existing variable names use SI like variants that
should be otherwise obvious and acceptable.

Whitelist them from the CamelCase message.

Suggested-by: Phil Carmody <phil.carmody@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Joe Perches <joe@xxxxxxxxxxx>
---
 scripts/checkpatch.pl | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 5989415..7e8aa1b 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3195,7 +3195,10 @@ sub process {
 #CamelCase
 			if ($var !~ /^$Constant$/ &&
 			    $var =~ /[A-Z][a-z]|[a-z][A-Z]/ &&
+#Ignore Page<foo> variants
 			    $var !~ /^(?:Clear|Set|TestClear|TestSet|)Page[A-Z]/ &&
+#Ignore SI style variants like nS, mV and dB (ie: max_uV, regulator_min_uA_show)
+			    $var !~ /^(?:[a-z_]*?)_?[a-z][A-Z](?:_[a-z_]+)?$/ &&
 			    !defined $camelcase{$var}) {
 				$camelcase{$var} = 1;
 				CHK("CAMELCASE",
-- 
1.8.1.2.459.gbcd45b4.dirty

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