From: YoungJun Cho yj44.cho@samsung.com

This patch is for unreferencing the (current)fb if plane->fb is existed in exynos_disable_plane(). In exynos_update_plane(), the new fb reference count can be bigger than 1. So it can't be removed for that reference count.

And this patch is based on exynos-drm-next.

Signed-off-by: YoungJun Cho yj44.cho@samsung.com Signed-off-by: Inki Dae inki.dae@samsung.com Signed-off-by: Kyungmin Park kyungmin.park@samsung.com --- drivers/gpu/drm/exynos/exynos_drm_plane.c | 12 +++++++++++- 1 files changed, 11 insertions(+), 1 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_plane.c b/drivers/gpu/drm/exynos/exynos_drm_plane.c index 083fd5f..dc7e057 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_plane.c +++ b/drivers/gpu/drm/exynos/exynos_drm_plane.c @@ -161,13 +161,15 @@ exynos_update_plane(struct drm_plane *plane, struct drm_crtc *crtc, if (plane->fb) drm_framebuffer_unreference(plane->fb);

+ plane->fb = fb; + /* * Take a reference to new fb. * * Taking a reference means that this plane's dma is going to access * memory region to the new fb. */ - drm_framebuffer_reference(fb); + drm_framebuffer_reference(plane->fb);

plane->crtc = crtc; exynos_plane_commit(plane); @@ -180,6 +182,14 @@ static int exynos_disable_plane(struct drm_plane *plane) { DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);

+ /* + * Unreference the (current)fb if plane->fb is existed. + * In exynos_update_plane(), the new fb reference count can be bigger + * than 1. So it can't be removed for that reference count. + */ + if (plane->fb) + drm_framebuffer_unreference(plane->fb); + exynos_plane_dpms(plane, DRM_MODE_DPMS_OFF);

return 0;