-From 955fba9c62f43238b5c3687a78ed812ac95edd44 Mon Sep 17 00:00:00 2001
+From 89c0c9310876b7ae0d0ed9002e1ebe44f856f876 Mon Sep 17 00:00:00 2001
From: wm4 <wm4@nowhere>
Date: Tue, 19 Apr 2016 16:08:35 +0200
Subject: [PATCH] bcm2835: do not require substream for accessing chmap ctl