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drm: move device unregistration into drm_dev_unregister() 

Analog to drm_dev_register(), we now provide drm_dev_unregister() which
does the reverse. drm_dev_put() is still in place and combines the calls
to drm_dev_unregister() and drm_dev_free() so buses don't have to change.

*_get() and *_put() are used for reference-counting in the kernel.
However, drm_dev_put() definitely does not do any kind of ref-counting.
Hence, use the more appropriate *_register(), *_unregister(), *_alloc()
and *_free() names.

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
David Herrmann 2013-10-02 11:23:38 +02:00 committed by Dave Airlie
parent 0dc8fe5985
commit c3a49737ef
2 changed files with 37 additions and 25 deletions
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61
drivers/gpu/drm/drm_stub.c
View File

@ -363,8 +363,6 @@ static void drm_unplug_minor(struct drm_minor *minor)
*/
void drm_put_dev(struct drm_device *dev)
{
struct drm_map_list *r_list, *list_temp;
DRM_DEBUG("\n");
if (!dev) {
@ -372,29 +370,7 @@ void drm_put_dev(struct drm_device *dev)
return;
}
drm_lastclose(dev);
if (dev->driver->unload)
dev->driver->unload(dev);
if (dev->driver->bus->agp_destroy)
dev->driver->bus->agp_destroy(dev);
drm_vblank_cleanup(dev);
list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head)
drm_rmmap(dev, r_list->map);
if (drm_core_check_feature(dev, DRIVER_MODESET))
drm_put_minor(&dev->control);
if (dev->render)
drm_put_minor(&dev->render);
drm_put_minor(&dev->primary);
list_del(&dev->driver_item);
drm_dev_unregister(dev);
drm_dev_free(dev);
}
EXPORT_SYMBOL(drm_put_dev);
@ -595,3 +571,38 @@ out_unlock:
return ret;
}
EXPORT_SYMBOL(drm_dev_register);
/**
* drm_dev_unregister - Unregister DRM device
* @dev: Device to unregister
*
* Unregister the DRM device from the system. This does the reverse of
* drm_dev_register() but does not deallocate the device. The caller must call
* drm_dev_free() to free all resources.
*/
void drm_dev_unregister(struct drm_device *dev)
{
struct drm_map_list *r_list, *list_temp;
drm_lastclose(dev);
if (dev->driver->unload)
dev->driver->unload(dev);
if (dev->driver->bus->agp_destroy)
dev->driver->bus->agp_destroy(dev);
drm_vblank_cleanup(dev);
list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head)
drm_rmmap(dev, r_list->map);
if (dev->control)
drm_put_minor(&dev->control);
if (dev->render)
drm_put_minor(&dev->render);
drm_put_minor(&dev->primary);
list_del(&dev->driver_item);
}
EXPORT_SYMBOL(drm_dev_unregister);

1
include/drm/drmP.h
View File

@ -1644,6 +1644,7 @@ struct drm_device *drm_dev_alloc(struct drm_driver *driver,
struct device *parent);
void drm_dev_free(struct drm_device *dev);
int drm_dev_register(struct drm_device *dev, unsigned long flags);
void drm_dev_unregister(struct drm_device *dev);
int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type);
/*@}*/