Commit c27f010a authored by José Roberto de Souza's avatar José Roberto de Souza
Browse files

drm/i915: Disable DSB in Xe KMD 

Often getting DSB overflows when starting Xorg or Wayland compositors
when running Xe KMD.
Issue was reported but nothing was done, so disabling DSB as whole
until properly fixed in Xe KMD.

v2:
- move check to HAS_DSB(Jani)

v3:
- use IS_ENABLED(I915) check in intel_dsb_prepare()

Link: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/989
Link: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/1031
Link: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/1072


Cc: Animesh Manna <animesh.manna@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Francois Dugast <francois.dugast@intel.com>
Reviewed-by: default avatarJani Nikula <jani.nikula@intel.com>
Signed-off-by: default avatarJosé Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240104162411.56085-1-jose.souza@intel.com
parent 39c9f38e

drivers/gpu/drm/i915/display/intel_dsb.c

+4 −0
Original line number Diff line number Diff line
@@ -453,6 +453,10 @@ struct intel_dsb *intel_dsb_prepare(const struct intel_crtc_state *crtc_state, 
	if (!HAS_DSB(i915))

		return NULL;



	/* TODO: DSB is broken in Xe KMD, so disabling it until fixed */

	if (!IS_ENABLED(I915))

		return NULL;



	dsb = kzalloc(sizeof(*dsb), GFP_KERNEL);

	if (!dsb)

		goto out;