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From dce3dc28b1e34cdb37f5de5d8949cda4ac5599e0 Mon Sep 17 00:00:00 2001
From: "Leo (Sunpeng) Li" <sunpeng.li@amd.com>
Date: Tue, 20 Feb 2018 15:46:09 -0500
Subject: [PATCH 3743/4131] drm/amd/display: Fix memleaks when atomic check
fails.
While checking plane states for updates during atomic check, we create
dc_plane_states in preparation. These dc states should be freed if
something errors.
Although the input transfer function is also freed by
dc_plane_state_release(), we should free it (on error) under the same
scope as where it is created.
Signed-off-by: Leo (Sunpeng) Li <sunpeng.li@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Conflicts:
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
Change-Id: I5af43a6d41efed4369ae641e0491b17e489e9a77
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 40 ++++++++++++++++-------
1 file changed, 28 insertions(+), 12 deletions(-)
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 4652515..a56522e 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -1991,7 +1991,11 @@ static int fill_plane_attributes(struct amdgpu_device *adev,
* every time.
*/
ret = amdgpu_dm_set_degamma_lut(crtc_state, dc_plane_state);
-
+ if (ret) {
+ dc_transfer_func_release(dc_plane_state->in_transfer_func);
+ dc_plane_state->in_transfer_func = NULL;
+ }
+
return ret;
}
@@ -4850,6 +4854,7 @@ static int dm_update_planes_state(struct dc *dc,
*lock_and_validation_needed = true;
} else { /* Add new planes */
+ struct dc_plane_state *dc_new_plane_state;
if (drm_atomic_plane_disabling(plane->state, new_plane_state))
continue;
@@ -4867,35 +4872,46 @@ static int dm_update_planes_state(struct dc *dc,
continue;
WARN_ON(dm_new_plane_state->dc_state);
-
- dm_new_plane_state->dc_state = dc_create_plane_state(dc);
-
- DRM_DEBUG_DRIVER("Enabling DRM plane: %d on DRM crtc %d\n",
- plane->base.id, new_plane_crtc->base.id);
-
- if (!dm_new_plane_state->dc_state) {
+
+ dc_new_plane_state = dc_create_plane_state(dc);
+ if (!dc_new_plane_state) {
ret = -EINVAL;
return ret;
}
+
+ DRM_DEBUG_DRIVER("Enabling DRM plane: %d on DRM crtc %d\n",
+ plane->base.id, new_plane_crtc->base.id);
ret = fill_plane_attributes(
new_plane_crtc->dev->dev_private,
- dm_new_plane_state->dc_state,
+ dc_new_plane_state,
new_plane_state,
new_crtc_state);
- if (ret)
+ if (ret) {
+ dc_plane_state_release(dc_new_plane_state);
return ret;
+ }
+ /*
+ * Any atomic check errors that occur after this will
+ * not need a release. The plane state will be attached
+ * to the stream, and therefore part of the atomic
+ * state. It'll be released when the atomic state is
+ * cleaned.
+ */
if (!dc_add_plane_to_context(
dc,
dm_new_crtc_state->stream,
- dm_new_plane_state->dc_state,
+ dc_new_plane_state,
dm_state->context)) {
-
+
+ dc_plane_state_release(dc_new_plane_state);
ret = -EINVAL;
return ret;
}
+ dm_new_plane_state->dc_state = dc_new_plane_state;
+
/* Tell DC to do a full surface update every time there
* is a plane change. Inefficient, but works for now.
*/
--
2.7.4
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