drm: Nuke drm_atomic_legacy_backoff

Finally all users are gone!

Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20170725080122.20548-9-daniel.vetter@ffwll.ch

2 files changed, 0 insertions, 34 deletions

diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index 306fdca92abf..1b755439f591 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -1588,38 +1588,6 @@ drm_atomic_add_affected_planes(struct drm_atomic_state *state,
 EXPORT_SYMBOL(drm_atomic_add_affected_planes);
 
 /**
- * drm_atomic_legacy_backoff - locking backoff for legacy ioctls
- * @state: atomic state
- *
- * This function should be used by legacy entry points which don't understand
- * -EDEADLK semantics. For simplicity this one will grab all modeset locks after
- * the slowpath completed.
- */
-void drm_atomic_legacy_backoff(struct drm_atomic_state *state)
-{
-        struct drm_device *dev = state->dev;
-        int ret;
-        bool global = false;
-
-        if (WARN_ON(dev->mode_config.acquire_ctx == state->acquire_ctx)) {
-                global = true;
-
-                dev->mode_config.acquire_ctx = NULL;
-        }
-
-retry:
-        drm_modeset_backoff(state->acquire_ctx);
-
-        ret = drm_modeset_lock_all_ctx(dev, state->acquire_ctx);
-        if (ret)
-                goto retry;
-
-        if (global)
-                dev->mode_config.acquire_ctx = state->acquire_ctx;
-}
-EXPORT_SYMBOL(drm_atomic_legacy_backoff);
-
-/**
  * drm_atomic_check_only - check whether a given config would work
  * @state: atomic configuration to check
  *
diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h
index 711617fdf032..8a5808eb5628 100644
--- a/include/drm/drm_atomic.h
+++ b/include/drm/drm_atomic.h
@@ -545,8 +545,6 @@ int __must_check
 drm_atomic_add_affected_planes(struct drm_atomic_state *state,
                                struct drm_crtc *crtc);
 
-void drm_atomic_legacy_backoff(struct drm_atomic_state *state);
-
 void
 drm_atomic_clean_old_fb(struct drm_device *dev, unsigned plane_mask, int ret);