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drm/i915/wm: clear the plane ddb_y entries on plane disable

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The UV/Y plane DDB entriess are never cleared on
sk_wm_plane_disable_noatomic() and can leave stale DDB state
for NV12 planes on pre-Gen11 devices

Fixes: d34b59d5ba ("drm/i915: Add skl_wm_plane_disable_noatomic()")
Assisted-by: Copilot:claude-sonnet-4.6
Signed-off-by: Vinod Govindapillai <vinod.govindapillai@intel.com>
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Link: https://patch.msgid.link/20260615203355.218578-2-vinod.govindapillai@intel.com
(cherry picked from commit 60f68a6ba298fd1e971a2d91576304bee89a16fc)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
This commit is contained in:
Vinod Govindapillai
2026-06-15 23:33:49 +03:00
committed by Rodrigo Vivi
parent f61289af26
commit e89978c1cf
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/i915/display/skl_watermark.c
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@@ -3856,7 +3856,7 @@ void skl_wm_plane_disable_noatomic(struct intel_crtc *crtc,
return;
skl_ddb_entry_init(&crtc_state->wm.skl.plane_ddb[plane->id], 0, 0);
skl_ddb_entry_init(&crtc_state->wm.skl.plane_ddb[plane->id], 0, 0);
skl_ddb_entry_init(&crtc_state->wm.skl.plane_ddb_y[plane->id], 0, 0);
crtc_state->wm.skl.plane_min_ddb[plane->id] = 0;
crtc_state->wm.skl.plane_interim_ddb[plane->id] = 0;