From: Tomi Valkeinen Date: Tue, 15 Apr 2014 13:26:01 +0000 (+0300) Subject: drm/omap: fix the handling of fb ref counts X-Git-Tag: accepted/tizen/common/20141203.182822~168^2~8^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f2d022aa421ca903a30f63b04528064b7eceaf5e;p=platform%2Fkernel%2Flinux-arm64.git drm/omap: fix the handling of fb ref counts With the recent primary-plane changes for drm, the primary plane's framebuffer needs to be ref counted the same way as for non-primary-planes. This was not done by the omapdrm driver, which caused the ref count to drop to 0 too early, causing problems. This patch moves the fb unref and ref from omap_plane_update to omap_plane_mode_set. This way the fb refs are updated for both primary and non-primary cases, as omap_plane_update calls omap_plane_mode_set. Signed-off-by: Tomi Valkeinen --- diff --git a/drivers/gpu/drm/omapdrm/omap_plane.c b/drivers/gpu/drm/omapdrm/omap_plane.c index df17252..3cf31ee 100644 --- a/drivers/gpu/drm/omapdrm/omap_plane.c +++ b/drivers/gpu/drm/omapdrm/omap_plane.c @@ -225,6 +225,11 @@ int omap_plane_mode_set(struct drm_plane *plane, omap_plane->apply_done_cb.arg = arg; } + if (plane->fb) + drm_framebuffer_unreference(plane->fb); + + drm_framebuffer_reference(fb); + plane->fb = fb; plane->crtc = crtc; @@ -241,11 +246,6 @@ static int omap_plane_update(struct drm_plane *plane, struct omap_plane *omap_plane = to_omap_plane(plane); omap_plane->enabled = true; - if (plane->fb) - drm_framebuffer_unreference(plane->fb); - - drm_framebuffer_reference(fb); - /* omap_plane_mode_set() takes adjusted src */ switch (omap_plane->win.rotation & 0xf) { case BIT(DRM_ROTATE_90):