From: Helen Koike Date: Mon, 3 Jun 2019 16:56:09 +0000 (-0300) Subject: drm/vc4: fix fb references in async update X-Git-Tag: v5.2-rc4~12^2~3^2~2 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=c16b85559dcfb5a348cc085a7b4c75ed49b05e2c;p=linux.git drm/vc4: fix fb references in async update Async update callbacks are expected to set the old_fb in the new_state so prepare/cleanup framebuffers are balanced. Calling drm_atomic_set_fb_for_plane() (which gets a reference of the new fb and put the old fb) is not required, as it's taken care by drm_mode_cursor_universal() when calling drm_atomic_helper_update_plane(). Cc: # v4.19+ Fixes: 539c320bfa97 ("drm/vc4: update cursors asynchronously through atomic") Suggested-by: Boris Brezillon Signed-off-by: Helen Koike Reviewed-by: Boris Brezillon Signed-off-by: Boris Brezillon Link: https://patchwork.freedesktop.org/patch/msgid/20190603165610.24614-5-helen.koike@collabora.com --- diff --git a/drivers/gpu/drm/vc4/vc4_plane.c b/drivers/gpu/drm/vc4/vc4_plane.c index 4d918d3e4858..afc80b245ea3 100644 --- a/drivers/gpu/drm/vc4/vc4_plane.c +++ b/drivers/gpu/drm/vc4/vc4_plane.c @@ -1025,7 +1025,7 @@ static void vc4_plane_atomic_async_update(struct drm_plane *plane, { struct vc4_plane_state *vc4_state, *new_vc4_state; - drm_atomic_set_fb_for_plane(plane->state, state->fb); + swap(plane->state->fb, state->fb); plane->state->crtc_x = state->crtc_x; plane->state->crtc_y = state->crtc_y; plane->state->crtc_w = state->crtc_w;