drm: make sysfs device always available for minors

For each minor we allocate a sysfs device as minor->kdev. Currently, this
is allocated and registered in drm_minor_register(). This makes it
impossible to add sysfs-attributes to the device before it is registered.
Therefore, they are not added atomically, nor can we move device_add()
*after* ->load() is called.

This patch makes minor->kdev available early, but only adds the device
during minor-registration. Note that the registration is still called
before ->load() as debugfs needs to be split, too. This will be fixed in
follow-ups.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index c480b448ce65..458385ec15f3 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -1502,9 +1502,8 @@ extern int drm_pci_set_unique(struct drm_device *dev,
 struct drm_sysfs_class;
 extern struct class *drm_sysfs_create(struct module *owner, char *name);
 extern void drm_sysfs_destroy(void);
-extern int drm_sysfs_device_add(struct drm_minor *minor);
+extern struct device *drm_sysfs_minor_alloc(struct drm_minor *minor);
 extern void drm_sysfs_hotplug_event(struct drm_device *dev);
-extern void drm_sysfs_device_remove(struct drm_minor *minor);
 extern int drm_sysfs_connector_add(struct drm_connector *connector);
 extern void drm_sysfs_connector_remove(struct drm_connector *connector);