From patchwork Mon Mar 1 16:07:29 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 389557 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 786D1C433E6 for ; Mon, 1 Mar 2021 18:54:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 38FC864DE0 for ; Mon, 1 Mar 2021 18:54:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238093AbhCASyX (ORCPT ); Mon, 1 Mar 2021 13:54:23 -0500 Received: from mail.kernel.org ([198.145.29.99]:53878 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240639AbhCASsp (ORCPT ); Mon, 1 Mar 2021 13:48:45 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 2264F6023B; Mon, 1 Mar 2021 17:46:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1614620789; bh=COfQtmskVanvlMHQLp4Xvo01CLDTaAfFlWPbsTYwp0g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=lqxEmZUJ3fWQQAGhGc3Rb/Ax4FZf7BSPtHY0UEvT6jIL4oDTReMWrxOJWdkfFWmrS jZ6W0I/Dx0FCw6mb3MoQ6c2EqE4DsNKFfPT8ojBLafbDtd6YBWZlXloGzQOGCOllHg Hm1MOAKrlle7d0ePbOFo4/b18OSJMRXQjyyxc6Kc= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Wayne Lin , Lyude Paul , Imre Deak , Maarten Lankhorst , Sasha Levin Subject: [PATCH 5.11 281/775] drm/dp_mst: Dont cache EDIDs for physical ports Date: Mon, 1 Mar 2021 17:07:29 +0100 Message-Id: <20210301161215.516904085@linuxfoundation.org> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210301161201.679371205@linuxfoundation.org> References: <20210301161201.679371205@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Imre Deak [ Upstream commit 4b8878eefa0a3b65e2e016db49014ea66fb9fd45 ] Caching EDIDs for physical ports prevents updating the EDID if a port gets reconnected via a Connection Status Notification message, fix this. Fixes: db1a07956968 ("drm/dp_mst: Handle SST-only branch device case") Cc: Wayne Lin Cc: Lyude Paul Signed-off-by: Imre Deak Reviewed-by: Lyude Paul Link: https://patchwork.freedesktop.org/patch/msgid/20210201120145.350258-2-imre.deak@intel.com (cherry picked from commit 468091531c2e5c49f55d8c6f1d036ce997d24e13) Signed-off-by: Maarten Lankhorst Signed-off-by: Sasha Levin --- drivers/gpu/drm/drm_dp_mst_topology.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index b11c0522a4410..405501c74e400 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -2302,7 +2302,8 @@ drm_dp_mst_port_add_connector(struct drm_dp_mst_branch *mstb, } if (port->pdt != DP_PEER_DEVICE_NONE && - drm_dp_mst_is_end_device(port->pdt, port->mcs)) { + drm_dp_mst_is_end_device(port->pdt, port->mcs) && + port->port_num >= DP_MST_LOGICAL_PORT_0) { port->cached_edid = drm_get_edid(port->connector, &port->aux.ddc); drm_connector_set_tile_property(port->connector);