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Date: Tue, 10 Jan 2017 02:59:55 +0300
From: Alexey Dobriyan <adobriyan@gmail.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org, apw@canonical.com, joe@perches.com
Subject: [PATCH] checkpatch.pl: warn against using %Z
Message-ID: <20170109235955.GA6787@avx2>
References: <20170103230126.GA30170@avx2>
 <20170105160748.1f3696c51cd4e56de132243d@linux-foundation.org>
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%Z is going to be removed in favour of %z.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
---

 scripts/checkpatch.pl |    6 ++++++
 1 file changed, 6 insertions(+)

--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -5189,6 +5189,12 @@ sub process {
 				     "\%Ld/%Lu are not-standard C, use %lld/%llu\n" . $herecurr);
 				last;
 			}
+			# check for %Z
+			if ($string =~ /(?<!%)%[\*\d\.\$]*Z[diouxX]/) {
+				WARN("PRINTF_Z",
+				     "%Z is non-standard C, use %z\n" . $herecurr);
+				last;
+			}
 			if ($string =~ /0x%[\*\d\.\$\Llzth]*[udi]/) {
 				ERROR("PRINTF_0xDECIMAL",
 				      "Prefixing 0x with decimal output is defective\n" . $herecurr);