This patch adds explicit check if there is a connector with
connected status before fbdev initialization. It prevents creation
of default fbdev 1024x768 which is unusable on panels with bigger resolutions.
Signed-off-by: Andrzej Hajda <a.hajda@xxxxxxxxxxx>
---
drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
index e7c2f2d..e09449a 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
@@ -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;
--
1.8.3.2
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