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| author | Leo (Sunpeng) Li <sunpeng.li@amd.com> | 2018-02-20 15:46:09 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-03-14 15:08:41 -0500 |
| commit | 8c45c5db842f9fdfd292b18dcad1b245dd7e1948 (patch) | |
| tree | f7be82dd78806bbb3aa1671c0b3dd045307ae0ab /drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | |
| parent | d179664a2a4f5a06edabf7171bcd65a9e33bcf15 (diff) | |
| download | lwn-8c45c5db842f9fdfd292b18dcad1b245dd7e1948.tar.gz lwn-8c45c5db842f9fdfd292b18dcad1b245dd7e1948.zip | |
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>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 34 |
1 files changed, 25 insertions, 9 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 7e5c5c9eeb4f..914cd3f8500a 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -1982,6 +1982,10 @@ 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; } @@ -4737,6 +4741,7 @@ 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; @@ -4755,34 +4760,45 @@ static int dm_update_planes_state(struct dc *dc, 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. */ |