From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754914AbcA2CDu (ORCPT ); Thu, 28 Jan 2016 21:03:50 -0500 Received: from youngberry.canonical.com ([91.189.89.112]:32880 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753304AbcA2BVi (ORCPT ); Thu, 28 Jan 2016 20:21:38 -0500 From: Kamal Mostafa To: linux-kernel@vger.kernel.org, stable@vger.kernel.org, kernel-team@lists.ubuntu.com Cc: Mykola Lysenko , Alex Deucher , Kamal Mostafa Subject: [PATCH 3.19.y-ckt 073/210] drm/dp/mst: fix in RAD element access Date: Thu, 28 Jan 2016 17:16:51 -0800 Message-Id: <1454030348-17736-74-git-send-email-kamal@canonical.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1454030348-17736-1-git-send-email-kamal@canonical.com> References: <1454030348-17736-1-git-send-email-kamal@canonical.com> X-Extended-Stable: 3.19 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.19.8-ckt14 -stable review patch. If anyone has any objections, please let me know. ---8<------------------------------------------------------------ From: Mykola Lysenko commit 7a11a334aa6af4c65c6a0d81b60c97fc18673532 upstream. This is needed to receive correct port number from RAD, so MSTB could be found Acked-by: Dave Airlie Signed-off-by: Mykola Lysenko Signed-off-by: Alex Deucher Signed-off-by: Kamal Mostafa --- drivers/gpu/drm/drm_dp_mst_topology.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index 4710d2f..85aebb2 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -1035,7 +1035,7 @@ static void build_mst_prop_path(struct drm_dp_mst_port *port, snprintf(proppath, proppath_size, "mst:%d", mstb->mgr->conn_base_id); for (i = 0; i < (mstb->lct - 1); i++) { int shift = (i % 2) ? 0 : 4; - int port_num = mstb->rad[i / 2] >> shift; + int port_num = (mstb->rad[i / 2] >> shift) & 0xf; snprintf(temp, sizeof(temp), "-%d", port_num); strlcat(proppath, temp, proppath_size); } @@ -1185,7 +1185,7 @@ static struct drm_dp_mst_branch *drm_dp_get_mst_branch_device(struct drm_dp_mst_ for (i = 0; i < lct - 1; i++) { int shift = (i % 2) ? 0 : 4; - int port_num = rad[i / 2] >> shift; + int port_num = (rad[i / 2] >> shift) & 0xf; list_for_each_entry(port, &mstb->ports, next) { if (port->port_num == port_num) { -- 1.9.1