It's (almost, there's some iommu stuff without significance) 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: Jump out at the right label (Francesco)

v4: Try again, kbuild caught that I didn't build test this properly
...

v5: Use drmm_mode_config_init() for more clarity (Sam, Thomas)

Acked-by: Sam Ravnborg <[email protected]>
Cc: Sam Ravnborg <[email protected]>
Cc: Thomas Zimmermann <[email protected]>
Cc: Francesco Lavra <[email protected]>
Cc: Laurent Pinchart <[email protected]>
Signed-off-by: Daniel Vetter <[email protected]>
Cc: Sandy Huang <[email protected]>
Cc: "Heiko Stübner" <[email protected]>
Cc: [email protected]
Cc: [email protected]
---
 drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 14 +++++---------
 1 file changed, 5 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c 
b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
index 20ecb1508a22..0f3eb392fe39 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
@@ -135,14 +135,16 @@ static int rockchip_drm_bind(struct device *dev)
        if (ret)
                goto err_free;
 
-       drm_mode_config_init(drm_dev);
+       ret = drmm_mode_config_init(drm_dev);
+       if (ret)
+               goto err_iommu_cleanup;
 
        rockchip_drm_mode_config_init(drm_dev);
 
        /* Try to bind all sub drivers. */
        ret = component_bind_all(dev, drm_dev);
        if (ret)
-               goto err_mode_config_cleanup;
+               goto err_iommu_cleanup;
 
        ret = drm_vblank_init(drm_dev, drm_dev->mode_config.num_crtc);
        if (ret)
@@ -173,12 +175,9 @@ static int rockchip_drm_bind(struct device *dev)
        rockchip_drm_fbdev_fini(drm_dev);
 err_unbind_all:
        component_unbind_all(dev, drm_dev);
-err_mode_config_cleanup:
-       drm_mode_config_cleanup(drm_dev);
+err_iommu_cleanup:
        rockchip_iommu_cleanup(drm_dev);
 err_free:
-       drm_dev->dev_private = NULL;
-       dev_set_drvdata(dev, NULL);
        drm_dev_put(drm_dev);
        return ret;
 }
@@ -194,11 +193,8 @@ static void rockchip_drm_unbind(struct device *dev)
 
        drm_atomic_helper_shutdown(drm_dev);
        component_unbind_all(dev, drm_dev);
-       drm_mode_config_cleanup(drm_dev);
        rockchip_iommu_cleanup(drm_dev);
 
-       drm_dev->dev_private = NULL;
-       dev_set_drvdata(dev, NULL);
        drm_dev_put(drm_dev);
 }
 
-- 
2.25.1

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