__FUNCTION__ is gcc specific, __func__ is C99

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 scripts/checkpatch.pl |    5 +++++
 1 file changed, 5 insertions(+)

Index: b/scripts/checkpatch.pl
===================================================================
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -1557,6 +1557,11 @@ sub process {
 		if ($line =~ /\*\s*\)\s*k[czm]alloc\b/) {
 			WARN("unnecessary cast may hide bugs, see 
http://c-faq.com/malloc/mallocnocast.html\n" . $herecurr);
 		}
+
+# check for gcc specific __FUNCTION__
+		if ($line =~ /__FUNCTION__/) {
+			WARN("__func__ should be used instead of gcc specific __FUNCTION__\n"  . $herecurr);
+		}
 	}
 
 	# In mailback mode only produce a report in the negative, for
--
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