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drm/debugfs: disallow debugfs access when device isn't registered
During device bringup it might be that we can't access the debugfs files. Return -ENODEV until the registration is completed on access. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230829110115.3442-3-christian.koenig@amd.com
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@ -150,6 +150,9 @@ static int drm_debugfs_open(struct inode *inode, struct file *file)
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{
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struct drm_info_node *node = inode->i_private;
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if (!device_is_registered(node->minor->kdev))
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return -ENODEV;
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return single_open(file, node->info_ent->show, node);
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}
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@ -157,6 +160,10 @@ static int drm_debugfs_entry_open(struct inode *inode, struct file *file)
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{
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struct drm_debugfs_entry *entry = inode->i_private;
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struct drm_debugfs_info *node = &entry->file;
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struct drm_minor *minor = entry->dev->primary ?: entry->dev->accel;
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if (!device_is_registered(minor->kdev))
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return -ENODEV;
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return single_open(file, node->show, entry);
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}
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