drm/mtk: Drop explicit drm_mode_config_cleanup call

It's right above the drm_dev_put().

This is made possible by a preceeding patch which added a drmm_
cleanup action to drm_mode_config_init(), hence all we need to do to
ensure that drm_mode_config_cleanup() is run on final drm_device
cleanup is check the new error code for _init().

Aside: Another driver with a bit much devm_kzalloc, which should
probably use drmm_kzalloc instead ...

v2: Explain why this cleanup is possible (Laurent).

v3: Use drmm_mode_config_init() for more clarity (Sam, Thomas)

Acked-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200323144950.3018436-41-daniel.vetter@ffwll.ch

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
index 0563c68..2eaa908 100644 (file)
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
@@ -162,7 +162,9 @@ static int mtk_drm_kms_init(struct drm_device *drm)
        }
        private->mutex_dev = &pdev->dev;
 
-       drm_mode_config_init(drm);
+       ret = drmm_mode_config_init(drm);
+       if (ret)
+               return ret;
 
        drm->mode_config.min_width = 64;
        drm->mode_config.min_height = 64;
@@ -179,7 +181,7 @@ static int mtk_drm_kms_init(struct drm_device *drm)
 
        ret = component_bind_all(drm->dev, drm);
        if (ret)
-               goto err_config_cleanup;
+               return ret;
 
        /*
         * We currently support two fixed data streams, each optional,
@@ -255,8 +257,6 @@ err_unset_dma_parms:
                dma_dev->dma_parms = NULL;
 err_component_unbind:
        component_unbind_all(drm->dev, drm);
-err_config_cleanup:
-       drm_mode_config_cleanup(drm);
 
        return ret;
 }
@@ -272,7 +272,6 @@ static void mtk_drm_kms_deinit(struct drm_device *drm)
                private->dma_dev->dma_parms = NULL;
 
        component_unbind_all(drm->dev, drm);
-       drm_mode_config_cleanup(drm);
 }
 
 static const struct file_operations mtk_drm_fops = {