drm/edid: improve non-desktop quirk logging

Improve non-desktop quirk logging if the EDID indicates non-desktop. If
both are set, note about redundant quirk. If there's no quirk but the
EDID indicates non-desktop, don't log non-desktop is set to 0.

Cc: Philipp Zabel <[e-mail]>
Signed-off-by: Jani Nikula <[e-mail]>
Reviewed-by: Philipp Zabel <[e-mail]>
Tested-by: Philipp Zabel <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/gpu/drm/drm_edid.c

···
 	info->width_mm = edid->width_cm * 10;
 	info->height_mm = edid->height_cm * 10;
 
-	info->non_desktop = !!(quirks & EDID_QUIRK_NON_DESKTOP);
-
 	drm_get_monitor_range(connector, edid);
 
-	DRM_DEBUG_KMS("non_desktop set to %d\n", info->non_desktop);
-
 	if (edid->revision < 3)
-		return quirks;
+		goto out;
 
 	if (!(edid->input & DRM_EDID_INPUT_DIGITAL))
-		return quirks;
+		goto out;
 
 	drm_parse_cea_ext(connector, edid);
 
···
 
 	/* Only defined for 1.4 with digital displays */
 	if (edid->revision < 4)
-		return quirks;
+		goto out;
 
 	switch (edid->input & DRM_EDID_DIGITAL_DEPTH_MASK) {
 	case DRM_EDID_DIGITAL_DEPTH_6:
···
 		info->color_formats |= DRM_COLOR_FORMAT_YCRCB422;
 
 	drm_update_mso(connector, edid);
+
+out:
+	if (quirks & EDID_QUIRK_NON_DESKTOP) {
+		drm_dbg_kms(connector->dev, "Non-desktop display%s\n",
+			    info->non_desktop ? " (redundant quirk)" : "");
+		info->non_desktop = true;
+	}
 
 	return quirks;
 }