From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A2BDAC5AC7A for ; Fri, 7 Aug 2026 12:34:17 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 0CD0410E413; Fri, 7 Aug 2026 12:34:17 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="G68n7AsC"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.15]) by gabe.freedesktop.org (Postfix) with ESMTPS id E02C710E413; Fri, 7 Aug 2026 12:34:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1786106056; x=1817642056; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=+dzOSffzL9jnTe1JSZ7J5cPyJoxa9GuOzbTf7kqI9kM=; b=G68n7AsCSnu9yyeENSYs+olE51y/Be8AWh3YU6rMRdDGH8Nq96TVC5Vt I+8y8NnhKXunw8tH86m9oVuagbMaLkT0FhsJwVI33H/9blEj3RmHnqyQz zxdwwG9vWrBL8IYtTolgGvs3bVBeM0PQOoPTJwCSCAf+jVcYdJ311WwmK ICTthUx1+TGlg2zMGMfX5Zbak4VKjFndsLO1icC07dsALGxF4bWMri0Qf jDOjokwFH6Zuzt7aZyHPWTbPpUqbYgCTm2TQANEd2XDavTY5pQ/r5wPdM olK/5lAB5ZQKuAEPrnLj69gGFZJHKvMUC8VNrnre2vzKEjvbDdREXueRi g==; X-CSE-ConnectionGUID: gPk/TzrQQC6QfkVC1iqQlQ== X-CSE-MsgGUID: LOw3Nx/7S2Sqk0jgipyvWQ== X-IronPort-AV: E=McAfee;i="6800,10657,11867"; a="86824028" X-IronPort-AV: E=Sophos;i="6.25,210,1779174000"; d="scan'208";a="86824028" Received: from fmviesa003.fm.intel.com ([10.60.135.143]) by fmvoesa109.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Aug 2026 05:34:15 -0700 X-CSE-ConnectionGUID: DtKbQWpNQxGd+ov00UMFKQ== X-CSE-MsgGUID: W2dQjf7kTQetcCbrgUtX/w== X-ExtLoop1: 1 Received: from ijarvine-mobl1.ger.corp.intel.com (HELO localhost) ([10.245.245.152]) by fmviesa003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Aug 2026 05:34:13 -0700 From: Jani Nikula To: intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org Cc: ankit.k.nautiyal@intel.com, jani.nikula@intel.com Subject: [PATCH 0/4] drm/i915/display: Limit invalid joiner combinations harder Date: Fri, 7 Aug 2026 15:34:03 +0300 Message-ID: X-Mailer: git-send-email 2.47.3 MIME-Version: 1.0 Organization: Intel Finland Oy - BIC 0357606-4 - c/o Alberga Business Park, 6 krs Bertel Jungin Aukio 5, 02600 Espoo, Finland Content-Transfer-Encoding: 8bit X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" A bunch of fixes to limit invalid joiner combinations earlier, during mode enumeration and compute config. Patch 1 is v2 of [1], the rest are new. I decided to drop Fixes: and Cc: stable for now, just to thread carefully. There are no bug reports about this that I know of, and we can trivially ask for backports as needed. BR, Jani. [1] https://lore.kernel.org/r/20260806143738.2710312-1-jani.nikula@intel.com Jani Nikula (4): drm/i915/display: Limit max joined dotclock on joiner pipes available drm/i915/dp: Limit for_each_joiner_candidate() on joiner pipes available drm/i915/dp: Limit compute config joining to pipes that can actually join drm/i915/debugfs: Reject invalid force_joined_pipes harder drivers/gpu/drm/i915/display/intel_display.c | 51 ++++++++++++++++++- drivers/gpu/drm/i915/display/intel_display.h | 1 + .../drm/i915/display/intel_display_debugfs.c | 19 ++----- drivers/gpu/drm/i915/display/intel_dp.c | 17 +++---- drivers/gpu/drm/i915/display/intel_dp_mst.c | 4 ++ 5 files changed, 64 insertions(+), 28 deletions(-) -- 2.47.3