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drm: omapdrm: Add missing check for alloc_ordered_workqueue
As it may return NULL pointer and cause NULL pointer dereference. Add check
for the return value of alloc_ordered_workqueue.
Cc: stable@vger.kernel.org
Fixes: 2f95bc6d32
("drm: omapdrm: Perform initialization/cleanup at probe/remove time")
Signed-off-by: Ma Ke <make24@iscas.ac.cn>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240808061336.2796729-1-make24@iscas.ac.cn
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parent
6729c73103
commit
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@ -695,6 +695,10 @@ static int omapdrm_init(struct omap_drm_private *priv, struct device *dev)
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soc = soc_device_match(omapdrm_soc_devices);
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priv->omaprev = soc ? (uintptr_t)soc->data : 0;
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priv->wq = alloc_ordered_workqueue("omapdrm", 0);
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if (!priv->wq) {
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ret = -ENOMEM;
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goto err_alloc_workqueue;
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}
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mutex_init(&priv->list_lock);
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INIT_LIST_HEAD(&priv->obj_list);
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@ -753,6 +757,7 @@ err_gem_deinit:
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drm_mode_config_cleanup(ddev);
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omap_gem_deinit(ddev);
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destroy_workqueue(priv->wq);
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err_alloc_workqueue:
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omap_disconnect_pipelines(ddev);
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drm_dev_put(ddev);
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return ret;
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