drm/i915: Register debugfs interface last
Currently debugfs files are created before the driver is even loads.
This gives the opportunity for userspace to open that interface and poke
around before the backing data structures are initialised - with the
possibility of oopsing or worse.
Move the creation of the debugfs files to our registration phase, where
we announce our presence to the world when we are ready, i.e the
sequence changes from
drm_dev_register()
-> drm_minor_register()
-> drm_debugfs_init()
-> i915_debugfs_init()
-> i915_driver_load()
to
drm_dev_register()
-> drm_minor_register()
-> drm_debugfs_init()
-> i915_driver_load()
-> i915_debugfs_register()
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1466773227-7994-5-git-send-email-chris@chris-wilson.co.uk
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 9989b6a..a8e0eb7 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -5508,8 +5508,9 @@
}
}
-int i915_debugfs_init(struct drm_minor *minor)
+int i915_debugfs_register(struct drm_i915_private *dev_priv)
{
+ struct drm_minor *minor = dev_priv->dev->primary;
int ret, i;
ret = i915_forcewake_create(minor->debugfs_root, minor);
@@ -5535,8 +5536,9 @@
minor->debugfs_root, minor);
}
-void i915_debugfs_cleanup(struct drm_minor *minor)
+void i915_debugfs_unregister(struct drm_i915_private *dev_priv)
{
+ struct drm_minor *minor = dev_priv->dev->primary;
int i;
drm_debugfs_remove_files(i915_debugfs_list,