[PATCH v5] drm/vc4: fix fb references in async update

[Greg KH]

On Mon, Jun 10, 2019 at 10:18:59AM -0300, Helen Koike wrote:
> commit c16b85559dcfb5a348cc085a7b4c75ed49b05e2c upstream.
> 
> 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: <stable at vger.kernel.org> # v4.19+
> Fixes: 539c320bfa97 ("drm/vc4: update cursors asynchronously through atomic")
> Suggested-by: Boris Brezillon <boris.brezillon at collabora.com>
> Signed-off-by: Helen Koike <helen.koike at collabora.com>
> Reviewed-by: Boris Brezillon <boris.brezillon at collabora.com>
> Signed-off-by: Boris Brezillon <boris.brezillon at collabora.com>
> Link: https://patchwork.freedesktop.org/patch/msgid/20190603165610.24614-5-helen.koike@collabora.com
> ---
> 
> Hi,
> 
> This patch failed to apply on kernel stable v4.19, I'm re-sending it
> fixing the conflict.

Now applied, thanks.

greg k-h