Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux

Pull drm updates from Dave Airlie:
 "Highlights:

   - drm:

     Generic display port aux features, primary plane support, drm
     master management fixes, logging cleanups, enforced locking checks
     (instead of docs), documentation improvements, minor number
     handling cleanup, pseudofs for shared inodes.

   - ttm:

     add ability to allocate from both ends

   - i915:

     broadwell features, power domain and runtime pm, per-process
     address space infrastructure (not enabled)

   - msm:

     power management, hdmi audio support

   - nouveau:

     ongoing GPU fault recovery, initial maxwell support, random fixes

   - exynos:

     refactored driver to clean up a lot of abstraction, DP support
     moved into drm, LVDS bridge support added, parallel panel support

   - gma500:

     SGX MMU support, SGX irq handling, asle irq work fixes

   - radeon:

     video engine bringup, ring handling fixes, use dp aux helpers

   - vmwgfx:

     add rendernode support"

* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (849 commits)
  DRM: armada: fix corruption while loading cursors
  drm/dp_helper: don't return EPROTO for defers (v2)
  drm/bridge: export ptn3460_init function
  drm/exynos: remove MODULE_DEVICE_TABLE definitions
  ARM: dts: exynos4412-trats2: enable exynos/fimd node
  ARM: dts: exynos4210-trats: enable exynos/fimd node
  ARM: dts: exynos4412-trats2: add panel node
  ARM: dts: exynos4210-trats: add panel node
  ARM: dts: exynos4: add MIPI DSI Master node
  drm/panel: add S6E8AA0 driver
  ARM: dts: exynos4210-universal_c210: add proper panel node
  drm/panel: add ld9040 driver
  panel/ld9040: add DT bindings
  panel/s6e8aa0: add DT bindings
  drm/exynos: add DSIM driver
  exynos/dsim: add DT bindings
  drm/exynos: disallow fbdev initialization if no device is connected
  drm/mipi_dsi: create dsi devices only for nodes with reg property
  drm/mipi_dsi: add flags to DSI messages
  Skip intel_crt_init for Dell XPS 8700
  ...

1 files changed, 22 insertions, 1 deletions

diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
index e7c2f2d07f19..addbf7536da4 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
@@ -90,7 +90,7 @@ static int exynos_drm_fbdev_update(struct drm_fb_helper *helper,
         /* RGB formats use only one buffer */
         buffer = exynos_drm_fb_buffer(fb, 0);
         if (!buffer) {
-                DRM_LOG_KMS("buffer is null.\n");
+                DRM_DEBUG_KMS("buffer is null.\n");
                 return -EFAULT;
         }
 
@@ -237,6 +237,24 @@ static struct drm_fb_helper_funcs exynos_drm_fb_helper_funcs = {
         .fb_probe =     exynos_drm_fbdev_create,
 };
 
+bool exynos_drm_fbdev_is_anything_connected(struct drm_device *dev)
+{
+        struct drm_connector *connector;
+        bool ret = false;
+
+        mutex_lock(&dev->mode_config.mutex);
+        list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+                if (connector->status != connector_status_connected)
+                        continue;
+
+                ret = true;
+                break;
+        }
+        mutex_unlock(&dev->mode_config.mutex);
+
+        return ret;
+}
+
 int exynos_drm_fbdev_init(struct drm_device *dev)
 {
         struct exynos_drm_fbdev *fbdev;
@@ -248,6 +266,9 @@ int exynos_drm_fbdev_init(struct drm_device *dev)
         if (!dev->mode_config.num_crtc || !dev->mode_config.num_connector)
                 return 0;
 
+        if (!exynos_drm_fbdev_is_anything_connected(dev))
+                return 0;
+
         fbdev = kzalloc(sizeof(*fbdev), GFP_KERNEL);
         if (!fbdev)
                 return -ENOMEM;