[PATCH 30/64] drm/vc4: dsi: Switch to DRM-managed encoder initialization

[Maxime Ripard]

The current code will call drm_encoder_cleanup() when the device is
unbound. However, by then, there might still be some references held to
that encoder, including by the userspace that might still have the DRM
device open.

Let's switch to a DRM-managed initialization to clean up after ourselves
only once the DRM device has been last closed.

Signed-off-by: Maxime Ripard <max...@cerno.tech>
---
 drivers/gpu/drm/vc4/vc4_dsi.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_dsi.c b/drivers/gpu/drm/vc4/vc4_dsi.c
index dbb3f6fb39b4..bcaf87b43cbd 100644
--- a/drivers/gpu/drm/vc4/vc4_dsi.c
+++ b/drivers/gpu/drm/vc4/vc4_dsi.c
@@ -1599,7 +1599,10 @@ static int vc4_dsi_bind(struct device *dev, struct 
device *master, void *data)
        if (ret)
                return ret;
 
-       drm_simple_encoder_init(drm, encoder, DRM_MODE_ENCODER_DSI);
+       ret = drmm_simple_encoder_init(drm, encoder, DRM_MODE_ENCODER_DSI);
+       if (ret)
+               return ret;
+
        drm_encoder_helper_add(encoder, &vc4_dsi_encoder_helper_funcs);
 
        ret = drm_bridge_attach(encoder, dsi->bridge, NULL, 0);
@@ -1632,7 +1635,6 @@ static void vc4_dsi_unbind(struct device *dev, struct 
device *master,
         * normally.
         */
        list_splice_init(&dsi->bridge_chain, &encoder->bridge_chain);
-       drm_encoder_cleanup(encoder);
 }
 
 static const struct component_ops vc4_dsi_ops = {
-- 
2.36.1