From patchwork Tue Apr 28 18:24:55 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "gregkh@linuxfoundation.org" X-Patchwork-Id: 226912 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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 7122BC83007 for ; Tue, 28 Apr 2020 18:34:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 509BA21835 for ; Tue, 28 Apr 2020 18:34:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588098847; bh=lu+rWn0DuPCOc6t/Q8s2CXZu/8GtE0gGQvraLXW4+mk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=O1X75YR9l3HmRL48lyavbbrpihm41OfLwL4e9Q3CU1/5bNR/TTj5LKWIXx8nkPaDs LfNLBAUUqpvxTvTPkmh1bTKeifThVVuGfbHoj99AO5nz/rLvb4sFcnAI8iLDqu3Vza 9GLQ9KB7o43SAfH4gPZTZsHohX0v37VNsjBfpP1k= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730015AbgD1SeD (ORCPT ); Tue, 28 Apr 2020 14:34:03 -0400 Received: from mail.kernel.org ([198.145.29.99]:50692 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730011AbgD1SeC (ORCPT ); Tue, 28 Apr 2020 14:34:02 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 67EEC2085B; Tue, 28 Apr 2020 18:34:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588098841; bh=lu+rWn0DuPCOc6t/Q8s2CXZu/8GtE0gGQvraLXW4+mk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Eobwr+Eui/IJTbttVNwjbKWC2kjW2GpgFNNLgC7Hc9og/JIVtnsnfnEOiC70YSTlo j5bsD4/Km6bcoz1UoX9XwB0pMMcLhp9QHctv4u9//0ThJc801FqJ9wv41NNKF0nnhy Jfh4id444wrd5OjYTaalb8PY97AfwdlIQLwCD+Ss= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Mikita Lipski , Lyude Paul Subject: [PATCH 5.6 119/167] drm/dp_mst: Zero assigned PBN when releasing VCPI slots Date: Tue, 28 Apr 2020 20:24:55 +0200 Message-Id: <20200428182240.281525612@linuxfoundation.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200428182225.451225420@linuxfoundation.org> References: <20200428182225.451225420@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Mikita Lipski commit 7bfc1fec1af3e2f0194843855b0d49054fa42fd2 upstream. Zero Port's PBN together with VCPI slots when releasing allocated VCPI slots. That way when disabling the connector it will not cause issues in drm_dp_mst_atomic_check verifying branch bw limit. Signed-off-by: Mikita Lipski Signed-off-by: Lyude Paul Fixes: cd82d82cbc04 ("drm/dp_mst: Add branch bandwidth validation to MST atomic check") Cc: # v5.6+ Link: https://patchwork.freedesktop.org/patch/msgid/20200407160717.27976-1-mikita.lipski@amd.com Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/drm_dp_mst_topology.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -4290,6 +4290,7 @@ int drm_dp_atomic_release_vcpi_slots(str if (pos->vcpi) { drm_dp_mst_put_port_malloc(port); pos->vcpi = 0; + pos->pbn = 0; } return 0;