i915: wait for fence in prepare_plane_fb
In intel_prepare_plane_fb, if fb is backed by dma-buf, wait for exclusive
fence
v2: First commit
v3: Remove object_name_lock acquire
Move wait from intel_atomic_commit() to intel_prepare_plane_fb()
v4: Wait only on exclusive fences, interruptible with no timeout
v5: Style tweaks to more closely match rest of file
v6: Properly handle interrupted waits
v7: No change
v8: No change
Link: https://patchwork.kernel.org/patch/7704181/
Signed-off-by: Alex Goins <agoins@nvidia.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 0ad20ec..01aae08 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -13690,6 +13690,17 @@
return ret;
}
+ /* For framebuffer backed by dmabuf, wait for fence */
+ if (obj && obj->base.dma_buf) {
+ ret = reservation_object_wait_timeout_rcu(obj->base.dma_buf->resv,
+ false, true,
+ MAX_SCHEDULE_TIMEOUT);
+ if (ret == -ERESTARTSYS)
+ return ret;
+
+ WARN_ON(ret < 0);
+ }
+
if (!obj) {
ret = 0;
} else if (plane->type == DRM_PLANE_TYPE_CURSOR &&