Yay, we can now properly retry in case of deadlocks or whatever!
Also don't forget to remove the transitional crtc->acquire_ctx
assignment again.
Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
---
drivers/gpu/drm/drm_atomic_helper.c | 40 ++-----------------------------------
drivers/gpu/drm/drm_plane.c | 1 -
2 files changed, 2 insertions(+), 39 deletions(-)
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index 0e65ce4497b3..c0ec763ec538 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -2885,34 +2885,16 @@ int drm_atomic_helper_page_flip(struct drm_crtc *crtc,
if (!state)
return -ENOMEM;
- state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc);
+ state->acquire_ctx = ctx;
-retry:
ret = page_flip_common(state, crtc, fb, event, flags);
if (ret != 0)
goto fail;
ret = drm_atomic_nonblocking_commit(state);
-
fail:
- if (ret == -EDEADLK)
- goto backoff;
-
drm_atomic_state_put(state);
return ret;
-
-backoff:
- drm_atomic_state_clear(state);
- drm_atomic_legacy_backoff(state);
-
- /*
- * Someone might have exchanged the framebuffer while we dropped locks
- * in the backoff code. We need to fix up the fb refcount tracking the
- * core does for us.
- */
- plane->old_fb = plane->fb;
-
- goto retry;
}
EXPORT_SYMBOL(drm_atomic_helper_page_flip);
@@ -2949,9 +2931,8 @@ int drm_atomic_helper_page_flip_target(
if (!state)
return -ENOMEM;
- state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc);
+ state->acquire_ctx = ctx;
-retry:
ret = page_flip_common(state, crtc, fb, event, flags);
if (ret != 0)
goto fail;
@@ -2964,26 +2945,9 @@ int drm_atomic_helper_page_flip_target(
crtc_state->target_vblank = target;
ret = drm_atomic_nonblocking_commit(state);
-
fail:
- if (ret == -EDEADLK)
- goto backoff;
-
drm_atomic_state_put(state);
return ret;
-
-backoff:
- drm_atomic_state_clear(state);
- drm_atomic_legacy_backoff(state);
-
- /*
- * Someone might have exchanged the framebuffer while we dropped locks
- * in the backoff code. We need to fix up the fb refcount tracking the
- * core does for us.
- */
- plane->old_fb = plane->fb;
-
- goto retry;
}
EXPORT_SYMBOL(drm_atomic_helper_page_flip_target);
diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c
index 373e980d698d..ec3e2e757800 100644
--- a/drivers/gpu/drm/drm_plane.c
+++ b/drivers/gpu/drm/drm_plane.c
@@ -875,7 +875,6 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev,
ret = drm_modeset_lock(&crtc->cursor->mutex, &ctx);
if (ret)
goto out;
- crtc->acquire_ctx = &ctx;
if (crtc->primary->fb == NULL) {
/* The framebuffer is currently unbound, presumably
--
2.11.0
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