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From c0a04cc1658aea0d02c6a12cca45e67232daef1e Mon Sep 17 00:00:00 2001
From: "Leo (Sunpeng) Li" <sunpeng.li@amd.com>
Date: Wed, 22 Nov 2017 11:05:00 -0500
Subject: [PATCH 1087/4131] drm/amdgpu: Do not ref-count on validation set
The validation set is only alive for the duration of
amdgpu_dm_atomic_check. Since modifications of the set are done through
an interface, and only atomic_check calls those interfaces, we do not
need to manage ref-counting on it.
The case of another owner freeing a stream state -- and therefore freeing
a reference that the validation set has -- won't happen. The set tracks
the old stream states, which will not be released during atomic_check.
Signed-off-by: Leo (Sunpeng) Li <sunpeng.li@amd.com>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 51d06df..0d95190 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -4713,7 +4713,6 @@ int amdgpu_dm_atomic_check(struct drm_device *dev,
old_acrtc_state = to_dm_crtc_state(crtc->state);
if (old_acrtc_state->stream) {
- dc_stream_retain(old_acrtc_state->stream);
set[set_count].stream = old_acrtc_state->stream;
++set_count;
}
--
2.7.4
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