[PATCH] drm/i915/dp: Fix the PSR debugfs entries wrt. MST connectors

[Imre Deak]

MST connectors don't have a static attached encoder, as their encoder
can change depending on the pipe they use; so the encoder for an MST
connector can't be retrieved using intel_dp_attached_encoder() (which
may return NULL for MST). Most of the PSR debugfs entries depend on a
static connector -> encoder mapping which is only true for eDP and SST
DP connectors and not for MST. These debugfs entries were enabled for
MST connectors as well recently to provide PR information for them, but
handling MST connectors needs more changes. Fix this by re-disabling for
now the PSR entries on MST connectors.

Fixes: ef75c25e8fed ("drm/i915/panelreplay: Debugfs support for panel replay")
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/9850
Cc: Animesh Manna <animesh.manna at intel.com>
Cc: Jouni Högander <jouni.hogander at intel.com>
Signed-off-by: Imre Deak <imre.deak at intel.com>
---
 drivers/gpu/drm/i915/display/intel_psr.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index 494d08817d71e..b5b9340e505e3 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -3310,11 +3310,8 @@ void intel_psr_connector_debugfs_add(struct intel_connector *connector)
 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
 	struct dentry *root = connector->base.debugfs_entry;
 
-	if (connector->base.connector_type != DRM_MODE_CONNECTOR_eDP) {
-		if (!(HAS_DP20(i915) &&
-		      connector->base.connector_type == DRM_MODE_CONNECTOR_DisplayPort))
-			return;
-	}
+	if (connector->base.connector_type != DRM_MODE_CONNECTOR_eDP)
+		return;
 
 	debugfs_create_file("i915_psr_sink_status", 0444, root,
 			    connector, &i915_psr_sink_status_fops);
-- 
2.39.2