drm: Fix locking cargo-cult in encoder/plane init/cleanup
Encoders&planes can't be hotplugged, we dont need locking for this
since it's all single-threaded driver setup/teardown code. CRTCs
already don't grab locks.
While at it I noticed that plane's are missing the
drm_modeset_lock_fini() call, so add it.
Reviewed-by: Frank Binns <frank.binns@imgtec.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161129094538.9650-1-daniel.vetter@ffwll.ch
diff --git a/drivers/gpu/drm/drm_encoder.c b/drivers/gpu/drm/drm_encoder.c
index 5c06771..992879f 100644
--- a/drivers/gpu/drm/drm_encoder.c
+++ b/drivers/gpu/drm/drm_encoder.c
@@ -110,11 +110,9 @@ int drm_encoder_init(struct drm_device *dev,
{
int ret;
- drm_modeset_lock_all(dev);
-
ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
if (ret)
- goto out_unlock;
+ return ret;
encoder->dev = dev;
encoder->encoder_type = encoder_type;
@@ -142,9 +140,6 @@ int drm_encoder_init(struct drm_device *dev,
if (ret)
drm_mode_object_unregister(dev, &encoder->base);
-out_unlock:
- drm_modeset_unlock_all(dev);
-
return ret;
}
EXPORT_SYMBOL(drm_encoder_init);
@@ -164,12 +159,10 @@ void drm_encoder_cleanup(struct drm_encoder *encoder)
* the indices on the drm_encoder after us in the encoder_list.
*/
- drm_modeset_lock_all(dev);
drm_mode_object_unregister(dev, &encoder->base);
kfree(encoder->name);
list_del(&encoder->head);
dev->mode_config.num_encoder--;
- drm_modeset_unlock_all(dev);
memset(encoder, 0, sizeof(*encoder));
}