From patchwork Fri Feb 21 07:36:46 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 230967 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=-9.8 required=3.0 tests=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 4AADAC35642 for ; Fri, 21 Feb 2020 08:02:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1CE5A206ED for ; Fri, 21 Feb 2020 08:02:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582272149; bh=FQqG5CuWZNvAahuC516eH5urLJCxfYr2WeJpFtvzYYE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=X9tfkz6mSvgqqmhrFbc/J8ObRKIONMPpStWFtMr1dsDTPufS1ZarlkBK5qx+WcUME kQ5gNY4dX2O6ZvmVgUPzijZ7KMaIKFLxx2TKFR4ff5QYescU+ZjnB9frxGclV9pj49 V9bttwzpbEYcHLXQZWCiwUhQobRYe7QftRbnbDxI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731344AbgBUIC2 (ORCPT ); Fri, 21 Feb 2020 03:02:28 -0500 Received: from mail.kernel.org ([198.145.29.99]:34956 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730889AbgBUIC2 (ORCPT ); Fri, 21 Feb 2020 03:02:28 -0500 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 6456320801; Fri, 21 Feb 2020 08:02:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582272147; bh=FQqG5CuWZNvAahuC516eH5urLJCxfYr2WeJpFtvzYYE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fZ4GHinh9+m1i6YhZAGba49RpwjfjJHkhA6P74Vvc5RD9F2X0uK9qWxpX+canwuPk XlRamfwQ6VDrCC302PZkww5DAFFs9hufN1avdP7xkBQ03bt2MNwuncM1zdeDzdwCY+ Uo/IvgUkFDlp8ssytC1nI9Am6dNHG0inWalc1MSw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Paul Kocialkowski , Patrik Jakobsson , Sasha Levin Subject: [PATCH 5.4 007/344] drm/gma500: Fixup fbdev stolen size usage evaluation Date: Fri, 21 Feb 2020 08:36:46 +0100 Message-Id: <20200221072349.948222886@linuxfoundation.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200221072349.335551332@linuxfoundation.org> References: <20200221072349.335551332@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: Paul Kocialkowski [ Upstream commit fd1a5e521c3c083bb43ea731aae0f8b95f12b9bd ] psbfb_probe performs an evaluation of the required size from the stolen GTT memory, but gets it wrong in two distinct ways: - The resulting size must be page-size-aligned; - The size to allocate is derived from the surface dimensions, not the fb dimensions. When two connectors are connected with different modes, the smallest will be stored in the fb dimensions, but the size that needs to be allocated must match the largest (surface) dimensions. This is what is used in the actual allocation code. Fix this by correcting the evaluation to conform to the two points above. It allows correctly switching to 16bpp when one connector is e.g. 1920x1080 and the other is 1024x768. Signed-off-by: Paul Kocialkowski Signed-off-by: Patrik Jakobsson Link: https://patchwork.freedesktop.org/patch/msgid/20191107153048.843881-1-paul.kocialkowski@bootlin.com Signed-off-by: Sasha Levin --- drivers/gpu/drm/gma500/framebuffer.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/gma500/framebuffer.c b/drivers/gpu/drm/gma500/framebuffer.c index 218f3bb15276e..90237abee0885 100644 --- a/drivers/gpu/drm/gma500/framebuffer.c +++ b/drivers/gpu/drm/gma500/framebuffer.c @@ -462,6 +462,7 @@ static int psbfb_probe(struct drm_fb_helper *helper, container_of(helper, struct psb_fbdev, psb_fb_helper); struct drm_device *dev = psb_fbdev->psb_fb_helper.dev; struct drm_psb_private *dev_priv = dev->dev_private; + unsigned int fb_size; int bytespp; bytespp = sizes->surface_bpp / 8; @@ -471,8 +472,11 @@ static int psbfb_probe(struct drm_fb_helper *helper, /* If the mode will not fit in 32bit then switch to 16bit to get a console on full resolution. The X mode setting server will allocate its own 32bit GEM framebuffer */ - if (ALIGN(sizes->fb_width * bytespp, 64) * sizes->fb_height > - dev_priv->vram_stolen_size) { + fb_size = ALIGN(sizes->surface_width * bytespp, 64) * + sizes->surface_height; + fb_size = ALIGN(fb_size, PAGE_SIZE); + + if (fb_size > dev_priv->vram_stolen_size) { sizes->surface_bpp = 16; sizes->surface_depth = 16; }