From patchwork Thu Aug 20 09:20:49 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 265304 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=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, 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 DA239C433DF for ; Thu, 20 Aug 2020 13:30:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AAD20204FD for ; Thu, 20 Aug 2020 13:30:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597930237; bh=o5V+TZzJ4oLw40P7fnqae4aYSj8Ai1i0CGcdbBn5HyY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=RyLlP06xCHIetZlCzZW2NBgQCBoLu8GrON60k7llwQ9S2ww59KBcxFWxdFjzNcMT8 uN4lIJjqo0w3IJimCS6OWeqJL9pko9k8AK9RcnfVmEtJIuSIaGleDuZaws+GB8MppV SjdKiGuLK6LqTI4ZHuRCYWctUG1C8kXay3LtPK4M= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728736AbgHTNa2 (ORCPT ); Thu, 20 Aug 2020 09:30:28 -0400 Received: from mail.kernel.org ([198.145.29.99]:45294 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728246AbgHTJcs (ORCPT ); Thu, 20 Aug 2020 05:32:48 -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 52D9922CAE; Thu, 20 Aug 2020 09:32:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597915967; bh=o5V+TZzJ4oLw40P7fnqae4aYSj8Ai1i0CGcdbBn5HyY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=E/8GZ+Iu3wW976uesLT9RyPcXgmknCqpqQcUbbJGtJAh0TQuFIGeAx8hmi9Tp6sgY rUnu9cLB/WSYzH93bMpAHYUdLtufbagJ6WIYkjFyaTfE6wZOlw+rS7K3ryRjQixaSb q1jFtEIvIxcTh8KKL9fNi5uVHoVUxIdtCrSNWTEo= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Dan Carpenter , Roland Scheidegger , Sasha Levin Subject: [PATCH 5.8 198/232] drm/vmwgfx: Use correct vmw_legacy_display_unit pointer Date: Thu, 20 Aug 2020 11:20:49 +0200 Message-Id: <20200820091622.391011401@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200820091612.692383444@linuxfoundation.org> References: <20200820091612.692383444@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: Dan Carpenter [ Upstream commit 1d2c0c565bc0da25f5e899a862fb58e612b222df ] The "entry" pointer is an offset from the list head and it doesn't point to a valid vmw_legacy_display_unit struct. Presumably the intent was to point to the last entry. Also the "i++" wasn't used so I have removed that as well. Fixes: d7e1958dbe4a ("drm/vmwgfx: Support older hardware.") Signed-off-by: Dan Carpenter Reviewed-by: Roland Scheidegger Signed-off-by: Roland Scheidegger Signed-off-by: Sasha Levin --- drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c index 16dafff5cab19..009f1742bed51 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c @@ -81,7 +81,7 @@ static int vmw_ldu_commit_list(struct vmw_private *dev_priv) struct vmw_legacy_display_unit *entry; struct drm_framebuffer *fb = NULL; struct drm_crtc *crtc = NULL; - int i = 0; + int i; /* If there is no display topology the host just assumes * that the guest will set the same layout as the host. @@ -92,12 +92,11 @@ static int vmw_ldu_commit_list(struct vmw_private *dev_priv) crtc = &entry->base.crtc; w = max(w, crtc->x + crtc->mode.hdisplay); h = max(h, crtc->y + crtc->mode.vdisplay); - i++; } if (crtc == NULL) return 0; - fb = entry->base.crtc.primary->state->fb; + fb = crtc->primary->state->fb; return vmw_kms_write_svga(dev_priv, w, h, fb->pitches[0], fb->format->cpp[0] * 8,