From 92dff6c79b16cad7f197fb5cd4756cf8db9ff777 Mon Sep 17 00:00:00 2001 From: Imre Deak Date: Mon, 6 Sep 2021 21:27:12 +0300 Subject: [PATCH] drm/i915/adlp: Assert that VMAs in DPT start at 0 Atm the DPT object can accommodate only one VMA, so the VMA offset will be always 0. Add an assert for this. Cc: Juha-Pekka Heikkila Signed-off-by: Imre Deak Reviewed-by: Juha-Pekka Heikkila Link: https://patchwork.freedesktop.org/patch/msgid/20210906182715.3915100-4-imre.deak@intel.com --- drivers/gpu/drm/i915/display/skl_universal_plane.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/i915/display/skl_universal_plane.c b/drivers/gpu/drm/i915/display/skl_universal_plane.c index 724e7b04f3b6..f50282b60de4 100644 --- a/drivers/gpu/drm/i915/display/skl_universal_plane.c +++ b/drivers/gpu/drm/i915/display/skl_universal_plane.c @@ -993,6 +993,11 @@ static u32 skl_surf_address(const struct intel_plane_state *plane_state, u32 offset = plane_state->view.color_plane[color_plane].offset; if (intel_fb_uses_dpt(fb)) { + /* + * The DPT object contains only one vma, so the VMA's offset + * within the DPT is always 0. + */ + WARN_ON(plane_state->dpt_vma->node.start); WARN_ON(offset & 0x1fffff); return offset >> 9; } else { -- 2.20.1