From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DFA39C43334 for ; Tue, 28 Jun 2022 02:21:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243682AbiF1CVQ (ORCPT ); Mon, 27 Jun 2022 22:21:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32856 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243564AbiF1CUb (ORCPT ); Mon, 27 Jun 2022 22:20:31 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1D5CD24BCE; Mon, 27 Jun 2022 19:20:11 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id C1427B81C11; Tue, 28 Jun 2022 02:20:09 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 87DBCC341CD; Tue, 28 Jun 2022 02:20:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1656382808; bh=aryDqvuv3cG6khhXyW+8VRoUdPuZ96pqZ7EV4Ei5FfU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=B67t4W0dIxFCRWa8F61mprUWB7QEVP05nUXuh8hPic7VGZc/6cIL8DvnDum/p1xII skH4vaX410gdtSpjtPiRMfql/J1T+EY9WqB2PahX2TlbH4DX1OZUVY5h4JA4QedyJq Bvqj97N4N1hbCyRXHpimE5glQ4Znq7dBWwipmC+HfiTtzTPUr6X7Mx91vRXvE5a0EP 9GmtD9Yc4l52NvEA73HXewR+QoUmHeWa41+gnyyr7FRyBNfqqzL7rqe0TY6QoCj3sa uF6nmYoPCoxEkgq1+QTU+S+k8WsGdOOJgRccgdc7VVxSAHsRDAqdDqoPgEGFmPHGnJ Txmy5Ffxy3KtQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Petr Cvek , Helge Deller , Sasha Levin , mbroemme@libmpq.org, linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 5.18 31/53] video: fbdev: intelfb: Use aperture size from pci_resource_len Date: Mon, 27 Jun 2022 22:18:17 -0400 Message-Id: <20220628021839.594423-31-sashal@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220628021839.594423-1-sashal@kernel.org> References: <20220628021839.594423-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Petr Cvek [ Upstream commit 25c9a15fb7bbfafb94dd3b4e3165c18b8e1bd039 ] Aperture size for i9x5 variants is determined from PCI base address. if (pci_resource_start(pdev, 2) & 0x08000000) *aperture_size = MB(128); ... This condition is incorrect as 128 MiB address can have the address set as 0x?8000000 or 0x?0000000. Also the code can be simplified to just use pci_resource_len(). The true settings of the aperture size is in the MSAC register, which could be used instead. However the value is used only as an info message, so it doesn't matter. Signed-off-by: Petr Cvek Signed-off-by: Helge Deller Signed-off-by: Sasha Levin --- drivers/video/fbdev/intelfb/intelfbhw.c | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-) diff --git a/drivers/video/fbdev/intelfb/intelfbhw.c b/drivers/video/fbdev/intelfb/intelfbhw.c index 57aff7450bce..2086e06532ee 100644 --- a/drivers/video/fbdev/intelfb/intelfbhw.c +++ b/drivers/video/fbdev/intelfb/intelfbhw.c @@ -201,13 +201,11 @@ int intelfbhw_get_memory(struct pci_dev *pdev, int *aperture_size, case PCI_DEVICE_ID_INTEL_945GME: case PCI_DEVICE_ID_INTEL_965G: case PCI_DEVICE_ID_INTEL_965GM: - /* 915, 945 and 965 chipsets support a 256MB aperture. - Aperture size is determined by inspected the - base address of the aperture. */ - if (pci_resource_start(pdev, 2) & 0x08000000) - *aperture_size = MB(128); - else - *aperture_size = MB(256); + /* + * 915, 945 and 965 chipsets support 64MB, 128MB or 256MB + * aperture. Determine size from PCI resource length. + */ + *aperture_size = pci_resource_len(pdev, 2); break; default: if ((tmp & INTEL_GMCH_MEM_MASK) == INTEL_GMCH_MEM_64M) -- 2.35.1