xf86drm: use the correct device minor names on OpenBSD

Add defines for the device minor names and make use of them
in drmGetMinorName() so the correct paths will be used on OpenBSD.

v2: don't add new defines to xf86drm.h to keep them out of the API
    as requested by Emil.

Signed-off-by: Jonathan Gray <jsg@jsg.id.au>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>

1 files changed, 13 insertions, 3 deletions

diff --git a/xf86drm.c b/xf86drm.c
index e23a51fc..5e029694 100644
--- a/xf86drm.c
+++ b/xf86drm.c
@@ -64,6 +64,16 @@
 #include "xf86drm.h"
 #include "libdrm_macros.h"
 
+#ifdef __OpenBSD__
+#define DRM_PRIMARY_MINOR_NAME	"drm"
+#define DRM_CONTROL_MINOR_NAME	"drmC"
+#define DRM_RENDER_MINOR_NAME	"drmR"
+#else
+#define DRM_PRIMARY_MINOR_NAME	"card"
+#define DRM_CONTROL_MINOR_NAME	"controlD"
+#define DRM_RENDER_MINOR_NAME	"renderD"
+#endif
+
 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
 #define DRM_MAJOR 145
 #endif
@@ -525,11 +535,11 @@ static const char *drmGetMinorName(int type)
 {
     switch (type) {
     case DRM_NODE_PRIMARY:
-        return "card";
+        return DRM_PRIMARY_MINOR_NAME;
     case DRM_NODE_CONTROL:
-        return "controlD";
+        return DRM_CONTROL_MINOR_NAME;
     case DRM_NODE_RENDER:
-        return "renderD";
+        return DRM_RENDER_MINOR_NAME;
     default:
         return NULL;
     }