[PATCH 09/13] drm: rename drm_unplug/get_minor() to drm_minor_register/unregister()

[David Herrmann]

drm_get_minor() no longer allocates objects, and drm_unplug_minor() is now
the exact reverse of it. Rename it to _register/unregister() so their
name actually says what they do.

Furthermore, remove the direct minor-ptr and instead pass the minor-type.
This way we know the actualy slot of the minor and can reset it if
required.

Signed-off-by: David Herrmann <dh.herrmann at gmail.com>
---
 drivers/gpu/drm/drm_stub.c | 54 +++++++++++++++-------------------------------
 1 file changed, 17 insertions(+), 37 deletions(-)

diff --git a/drivers/gpu/drm/drm_stub.c b/drivers/gpu/drm/drm_stub.c
index 1634a09..853026a 100644
--- a/drivers/gpu/drm/drm_stub.c
+++ b/drivers/gpu/drm/drm_stub.c
@@ -302,18 +302,7 @@ static void drm_minor_free(struct drm_device *dev, 
unsigned int type)
        }
 }

-/**
- * drm_get_minor - Register DRM minor
- * @dev: DRM device
- * @type: Type of minor
- *
- * Register minor of given type.
- * Caller must hold the global DRM mutex.
- *
- * RETURNS:
- * 0 on success, negative error code on failure.
- */
-static int drm_get_minor(struct drm_device *dev, unsigned int type)
+static int drm_minor_register(struct drm_device *dev, unsigned int type)
 {
        struct drm_minor *new_minor;
        int ret;
@@ -362,18 +351,11 @@ err_mem:
        return ret;
 }

-/**
- * drm_unplug_minor - Unplug DRM minor
- * @minor: Minor to unplug
- *
- * Unplugs the given DRM minor but keeps the object. So after this returns,
- * minor->dev is still valid so existing open-files can still access it to get
- * device information from their drm_file ojects.
- * If the minor is already unplugged or if @minor is NULL, nothing is done.
- * The global DRM mutex must be held by the caller.
- */
-static void drm_unplug_minor(struct drm_minor *minor)
+static void drm_minor_unregister(struct drm_device *dev, unsigned int type)
 {
+       struct drm_minor *minor;
+
+       minor = *drm_minor_get_slot(dev, type);
        if (!minor || !minor->kdev)
                return;

@@ -448,11 +430,9 @@ EXPORT_SYMBOL(drm_put_dev);
 void drm_unplug_dev(struct drm_device *dev)
 {
        /* for a USB device */
-       if (drm_core_check_feature(dev, DRIVER_MODESET))
-               drm_unplug_minor(dev->control);
-       if (dev->render)
-               drm_unplug_minor(dev->render);
-       drm_unplug_minor(dev->primary);
+       drm_minor_unregister(dev, DRM_MINOR_LEGACY);
+       drm_minor_unregister(dev, DRM_MINOR_RENDER);
+       drm_minor_unregister(dev, DRM_MINOR_CONTROL);

        mutex_lock(&drm_global_mutex);

@@ -634,15 +614,15 @@ int drm_dev_register(struct drm_device *dev, unsigned 
long flags)

        mutex_lock(&drm_global_mutex);

-       ret = drm_get_minor(dev, DRM_MINOR_CONTROL);
+       ret = drm_minor_register(dev, DRM_MINOR_CONTROL);
        if (ret)
                goto err_minors;

-       ret = drm_get_minor(dev, DRM_MINOR_RENDER);
+       ret = drm_minor_register(dev, DRM_MINOR_RENDER);
        if (ret)
                goto err_minors;

-       ret = drm_get_minor(dev, DRM_MINOR_LEGACY);
+       ret = drm_minor_register(dev, DRM_MINOR_LEGACY);
        if (ret)
                goto err_minors;

@@ -667,9 +647,9 @@ err_unload:
        if (dev->driver->unload)
                dev->driver->unload(dev);
 err_minors:
-       drm_unplug_minor(dev->control);
-       drm_unplug_minor(dev->render);
-       drm_unplug_minor(dev->primary);
+       drm_minor_unregister(dev, DRM_MINOR_LEGACY);
+       drm_minor_unregister(dev, DRM_MINOR_RENDER);
+       drm_minor_unregister(dev, DRM_MINOR_CONTROL);
 out_unlock:
        mutex_unlock(&drm_global_mutex);
        return ret;
@@ -701,8 +681,8 @@ void drm_dev_unregister(struct drm_device *dev)
        list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head)
                drm_rmmap(dev, r_list->map);

-       drm_unplug_minor(dev->control);
-       drm_unplug_minor(dev->render);
-       drm_unplug_minor(dev->primary);
+       drm_minor_unregister(dev, DRM_MINOR_LEGACY);
+       drm_minor_unregister(dev, DRM_MINOR_RENDER);
+       drm_minor_unregister(dev, DRM_MINOR_CONTROL);
 }
 EXPORT_SYMBOL(drm_dev_unregister);
-- 
1.8.5.3