drm/ttm: make sure dev_mapping is set-up for the first opener of the drm
This was causing an oops in my miniglx code to try and use a TTM-only setup.main
parent
674cefd4fe
commit
72a1190f6d
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@ -154,10 +154,13 @@ int drm_open(struct inode *inode, struct file *filp)
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spin_lock(&dev->count_lock);
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if (!dev->open_count++) {
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spin_unlock(&dev->count_lock);
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return drm_setup(dev);
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retcode = drm_setup(dev);
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goto out;
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}
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spin_unlock(&dev->count_lock);
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}
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out:
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mutex_lock(&dev->struct_mutex);
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BUG_ON((dev->dev_mapping != NULL) &&
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(dev->dev_mapping != inode->i_mapping));
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