From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:48266 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728349AbeHDLDH (ORCPT ); Sat, 4 Aug 2018 07:03:07 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Boris Brezillon , Sean Paul Subject: [PATCH 4.17 30/31] drm/atomic: Initialize variables in drm_atomic_helper_async_check() to make gcc happy Date: Sat, 4 Aug 2018 11:01:05 +0200 Message-Id: <20180804082634.336996497@linuxfoundation.org> In-Reply-To: <20180804082632.304529527@linuxfoundation.org> References: <20180804082632.304529527@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org List-ID: 4.17-stable review patch. If anyone has any objections, please let me know. ------------------ From: Boris Brezillon commit de2d8db395c32d121d02871819444b631f73e0b6 upstream. drm_atomic_helper_async_check() declares the plane, old_plane_state and new_plane_state variables to iterate over all planes of the atomic state and make sure only one plane is enabled. Unfortunately gcc is not smart enough to figure out that the check on n_planes is enough to guarantee that plane, new_plane_state and old_plane_state are initialized. Explicitly initialize those variables to NULL to make gcc happy. Fixes: fef9df8b5945 ("drm/atomic: initial support for asynchronous plane update") Cc: Signed-off-by: Boris Brezillon Reviewed-by: Sean Paul Link: https://patchwork.freedesktop.org/patch/msgid/20180724133300.32023-1-boris.brezillon@bootlin.com Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/drm_atomic_helper.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -1499,8 +1499,9 @@ int drm_atomic_helper_async_check(struct { struct drm_crtc *crtc; struct drm_crtc_state *crtc_state; - struct drm_plane *plane; - struct drm_plane_state *old_plane_state, *new_plane_state; + struct drm_plane *plane = NULL; + struct drm_plane_state *old_plane_state = NULL; + struct drm_plane_state *new_plane_state = NULL; const struct drm_plane_helper_funcs *funcs; int i, n_planes = 0;