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 BE547C433EF for ; Mon, 24 Jan 2022 23:06:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1842863AbiAXXCq (ORCPT ); Mon, 24 Jan 2022 18:02:46 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59488 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1574737AbiAXV7D (ORCPT ); Mon, 24 Jan 2022 16:59:03 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 77E9CC038AFD; Mon, 24 Jan 2022 12:39:12 -0800 (PST) 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 dfw.source.kernel.org (Postfix) with ESMTPS id 1EDDA61382; Mon, 24 Jan 2022 20:39:12 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 06A51C340E5; Mon, 24 Jan 2022 20:39:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1643056751; bh=GyS828HD/W5brWBjztyF7pzethTmRJ7htmn28hD2mHA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=h/FKX0xpUsRcrObP67twklf5z/cvz3Ne+HV50LrwTYZkDWaLu98zTZKxkQSKne39c u6CPoo5mdp8ytkaRcciGWhGsZbrRkgH2SiwMUT6o0FaIT7Sx7Q62pXzcY/hQZvBX/V LppjD0ikb8OpABnSSnRN32NIwaQRUQyUCUEh6dDk= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Mark Langsdorf , Bob Moore , "Rafael J. Wysocki" , Sasha Levin Subject: [PATCH 5.15 589/846] ACPICA: actypes.h: Expand the ACPI_ACCESS_ definitions Date: Mon, 24 Jan 2022 19:41:46 +0100 Message-Id: <20220124184121.358560131@linuxfoundation.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220124184100.867127425@linuxfoundation.org> References: <20220124184100.867127425@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Mark Langsdorf [ Upstream commit f81bdeaf816142e0729eea0cc84c395ec9673151 ] ACPICA commit bc02c76d518135531483dfc276ed28b7ee632ce1 The current ACPI_ACCESS_*_WIDTH defines do not provide a way to test that size is small enough to not cause an overflow when applied to a 32-bit integer. Rather than adding more magic numbers, add ACPI_ACCESS_*_SHIFT, ACPI_ACCESS_*_MAX, and ACPI_ACCESS_*_DEFAULT #defines and redefine ACPI_ACCESS_*_WIDTH in terms of the new #defines. This was inititally reported on Linux where a size of 102 in ACPI_ACCESS_BIT_WIDTH caused an overflow error in the SPCR initialization code. Link: https://github.com/acpica/acpica/commit/bc02c76d Signed-off-by: Mark Langsdorf Signed-off-by: Bob Moore Signed-off-by: Rafael J. Wysocki Signed-off-by: Sasha Levin --- include/acpi/actypes.h | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h index 92c71dfce0d5d..cefbb7ad253e0 100644 --- a/include/acpi/actypes.h +++ b/include/acpi/actypes.h @@ -536,8 +536,14 @@ typedef u64 acpi_integer; * Can be used with access_width of struct acpi_generic_address and access_size of * struct acpi_resource_generic_register. */ -#define ACPI_ACCESS_BIT_WIDTH(size) (1 << ((size) + 2)) -#define ACPI_ACCESS_BYTE_WIDTH(size) (1 << ((size) - 1)) +#define ACPI_ACCESS_BIT_SHIFT 2 +#define ACPI_ACCESS_BYTE_SHIFT -1 +#define ACPI_ACCESS_BIT_MAX (31 - ACPI_ACCESS_BIT_SHIFT) +#define ACPI_ACCESS_BYTE_MAX (31 - ACPI_ACCESS_BYTE_SHIFT) +#define ACPI_ACCESS_BIT_DEFAULT (8 - ACPI_ACCESS_BIT_SHIFT) +#define ACPI_ACCESS_BYTE_DEFAULT (8 - ACPI_ACCESS_BYTE_SHIFT) +#define ACPI_ACCESS_BIT_WIDTH(size) (1 << ((size) + ACPI_ACCESS_BIT_SHIFT)) +#define ACPI_ACCESS_BYTE_WIDTH(size) (1 << ((size) + ACPI_ACCESS_BYTE_SHIFT)) /******************************************************************************* * -- 2.34.1