linux-kernel - [PATCH 09/10] drm/msm: use drmm_mode_config

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Date:   Mon,  6 Mar 2023 11:07:21 +0100
From:   Johan Hovold <johan+linaro@...nel.org>
To:     Rob Clark <robdclark@...il.com>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc:     Sean Paul <sean@...rly.run>, David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>, linux-arm-msm@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org,
        Johan Hovold <johan+linaro@...nel.org>
Subject: [PATCH 09/10] drm/msm: use drmm_mode_config_init()

Switch to using drmm_mode_config_init() so that the mode config is
released when the last reference to the DRM device is dropped rather
than unconditionally at unbind() (which may be too soon).

Signed-off-by: Johan Hovold <johan+linaro@...nel.org>
---
 drivers/gpu/drm/msm/msm_drv.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index 73c597565f99..ade17947d1e5 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -247,8 +247,6 @@ static int msm_drm_uninit(struct device *dev)
 	if (kms)
 		msm_disp_snapshot_destroy(ddev);
 
-	drm_mode_config_cleanup(ddev);
-
 	for (i = 0; i < priv->num_bridges; i++)
 		drm_bridge_remove(priv->bridges[i]);
 	priv->num_bridges = 0;
@@ -454,11 +452,13 @@ static int msm_drm_init(struct device *dev, const struct drm_driver *drv)
 	might_lock(&priv->lru.lock);
 	fs_reclaim_release(GFP_KERNEL);
 
-	drm_mode_config_init(ddev);
+	ret = drmm_mode_config_init(ddev);
+	if (ret)
+		goto err_destroy_wq;
 
 	ret = msm_init_vram(ddev);
 	if (ret)
-		goto err_cleanup_mode_config;
+		goto err_destroy_wq;
 
 	/* Bind all our sub-components: */
 	ret = component_bind_all(dev, ddev);
@@ -563,8 +563,7 @@ static int msm_drm_init(struct device *dev, const struct drm_driver *drv)
 
 err_deinit_vram:
 	msm_deinit_vram(ddev);
-err_cleanup_mode_config:
-	drm_mode_config_cleanup(ddev);
+err_destroy_wq:
 	destroy_workqueue(priv->wq);
 err_put_dev:
 	drm_dev_put(ddev);
-- 
2.39.2