From eb7d2b19e2829b00317991fba05352e3ba1a1902 Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Sat, 15 Feb 2014 21:00:57 +0000
Subject: [PATCH] backlight: Reject user overrides on OpenBSD

We only handle the singular wscons OpenBSD interface for backlight, so
explicitly reject any user requests for something else.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 src/backlight.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/backlight.c b/src/backlight.c
index 5011cb86..70c65591 100644
--- a/src/backlight.c
+++ b/src/backlight.c
@@ -108,6 +108,9 @@ int backlight_open(struct backlight *b, char *iface)
 {
 	struct wsdisplay_param param;
 
+	if (iface != NULL)
+		return -1;
+
 	memset(&param, 0, sizeof(param));
 	param.param = WSDISPLAYIO_PARAM_BRIGHTNESS;