weston: fix fbdev backend.

The compilation of the program weston-launcher is currently disabled, so
the only way to launch Weston (on framebuffer) is to execute (as root):

  $ openvt -c 2 -s -- weston \
  	--backend=/usr/lib/weston/fbdev-backend.so \
	--tty=2 \
	--log=/tmp/weston.log

Unfortunately you will only end up with a black screen. The reason is
given in the log file:

  /dev/tty2 is already in graphics mode, is another display server running?

Here is the fix from upcoming version 1.4.

Signed-off-by: Eric Le Bihan <eric.le.bihan.dev@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

diff --git a/package/weston/weston-0004-fbdev-open-launcher-only-once.patch b/package/weston/weston-0004-fbdev-open-launcher-only-once.patch
new file mode 100644 (file)
index 0000000..eaf7e31
--- /dev/null
+++ b/package/weston/weston-0004-fbdev-open-launcher-only-once.patch
@@ -0,0 +1,46 @@
+From 1641d14b824df487bba23597aa128219c057df88 Mon Sep 17 00:00:00 2001
+From: David Herrmann <dh.herrmann@gmail.com>
+Date: Tue, 15 Oct 2013 14:29:57 +0200
+Subject: [PATCH] fbdev: open launcher only once
+
+We currently call launcher_connect() twice, which is redundant and
+amazingly works (ugh?). Fix this and connect only once to the launcher.
+
+Signed-off-by: Eric Le Bihan <eric.le.bihan.dev@free.fr>
+---
+ src/compositor-fbdev.c |   12 ++----------
+ 1 file changed, 2 insertions(+), 10 deletions(-)
+
+diff --git a/src/compositor-fbdev.c b/src/compositor-fbdev.c
+index 002ce0b..4376345 100644
+--- a/src/compositor-fbdev.c
++++ b/src/compositor-fbdev.c
+@@ -883,15 +883,6 @@ fbdev_compositor_create(struct wl_display *display, int *argc, char *argv[],
+                                  config) < 0)
+               goto out_free;
+
+-      /* Check if we run fbdev-backend using weston-launch */
+-      compositor->base.launcher =
+-              weston_launcher_connect(&compositor->base, param->tty);
+-      if (compositor->base.launcher == NULL && geteuid() != 0) {
+-              weston_log("fatal: fbdev backend should be run "
+-                         "using weston-launch binary or as root\n");
+-              goto out_compositor;
+-      }
+-
+       compositor->udev = udev_new();
+       if (compositor->udev == NULL) {
+               weston_log("Failed to initialize udev context.\n");
+@@ -905,7 +896,8 @@ fbdev_compositor_create(struct wl_display *display, int *argc, char *argv[],
+       compositor->base.launcher =
+               weston_launcher_connect(&compositor->base, param->tty);
+       if (!compositor->base.launcher) {
+-              weston_log("Failed to set up launcher.\n");
++              weston_log("fatal: fbdev backend should be run "
++                         "using weston-launch binary or as root\n");
+               goto out_udev;
+       }
+
+--
+1.7.9.5
+