[PATCH] drm/todo: i915 could use device_link_add

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Noticed while reading some unrelated patches. Unfortunately Imre's
patch to add our early/late hooks predated the device_link
infrastructure by 2 years.

Cc: Imre Deak <imre.deak@xxxxxxxxx>
Cc: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
---
 Documentation/gpu/todo.rst | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst
index 1a0a413eeced..f4d0b3476d9c 100644
--- a/Documentation/gpu/todo.rst
+++ b/Documentation/gpu/todo.rst
@@ -450,5 +450,12 @@ See drivers/gpu/drm/amd/display/TODO for tasks.
 
 Contact: Harry Wentland, Alex Deucher
 
+i915
+----
+
+- Our early/late pm callbacks could be removed in favour of using
+  device_link_add to model the dependency between i915 and snd_had. See
+  https://dri.freedesktop.org/docs/drm/driver-api/device_link.html
+
 Outside DRM
 ===========
-- 
2.15.1

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