Re: [PATCH 07/10] drm/i915: Reject tile4 BIOS FB

Jani Nikula
2026-04-10T15:55:23Z

On Fri, 10 Apr 2026, Ville Syrjala <ville.syrjala@linux.intel.com> wrote:
> From: Ville Syrjälä <ville.syrjala@linux.intel.com>
>
> There is no such thing as tile4 fenced region, so there is no
> way to have a linear view of the tile4 framebuffer for the CPU.
> Thus we should never encounter a tile4 BIOS FB, but if we somehow
> do, then reject it.
>
> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>

Reviewed-by: Jani Nikula <jani.nikula@intel.com>

> ---
> drivers/gpu/drm/i915/display/intel_initial_plane.c | 1 -
> 1 file changed, 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_initial_plane.c b/drivers/gpu/drm/i915/display/intel_initial_plane.c
> index 4f1591b55752..5a5adf738d4a 100644
> --- a/drivers/gpu/drm/i915/display/intel_initial_plane.c
> +++ b/drivers/gpu/drm/i915/display/intel_initial_plane.c
> @@ -81,7 +81,6 @@ intel_alloc_initial_plane_obj(struct intel_display *display,
> case DRM_FORMAT_MOD_LINEAR:
> case I915_FORMAT_MOD_X_TILED:
> case I915_FORMAT_MOD_Y_TILED:
> - case I915_FORMAT_MOD_4_TILED:
> break;
> default:
> drm_dbg_kms(display->drm, "Unsupported modifier for initial FB: 0x%llx\n",

--
Jani Nikula, Intel