From patchwork Wed Nov 13 07:12:02 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Masahiro Yamada X-Patchwork-Id: 1194093 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 47CbWS4NNmz9sPc for ; Wed, 13 Nov 2019 18:16:20 +1100 (AEDT) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=socionext.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=nifty.com header.i=@nifty.com header.b="n2KG6wYP"; dkim-atps=neutral Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 47CbWR5ljCzF7NS for ; Wed, 13 Nov 2019 18:16:19 +1100 (AEDT) X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=softfail (domain owner discourages use of this host) smtp.mailfrom=socionext.com (client-ip=210.131.2.75; helo=conuserg-08.nifty.com; envelope-from=yamada.masahiro@socionext.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=socionext.com Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=nifty.com header.i=@nifty.com header.b="n2KG6wYP"; dkim-atps=neutral Received: from conuserg-08.nifty.com (conuserg-08.nifty.com [210.131.2.75]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 47CbT02tczzF4Jy for ; Wed, 13 Nov 2019 18:14:11 +1100 (AEDT) Received: from localhost.localdomain (p14092-ipngnfx01kyoto.kyoto.ocn.ne.jp [153.142.97.92]) (authenticated) by conuserg-08.nifty.com with ESMTP id xAD7COMU032236; Wed, 13 Nov 2019 16:12:24 +0900 DKIM-Filter: OpenDKIM Filter v2.10.3 conuserg-08.nifty.com xAD7COMU032236 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nifty.com; s=dec2015msa; t=1573629145; bh=hUWxEOEKcTupHyB6KArKI0LSBUkIGOpAbtR0Bqznip4=; h=From:To:Cc:Subject:Date:From; b=n2KG6wYPBHKlFa4U7nisZquYRQPFHb3BSAreElf0QkXQTiJENHMqnSbALDYfiHZqY pIsnwIQcs8jEL2DpRIQLTn07+Ve9hVm+cgSEtJdZwR8/4enC6h6CNWoIZgz5YvWxQ6 MeluFmVWF4kSewTnyOC8VbaFPXSp9RuJ5UVKVAGweuDdsyZmDWNRfYku+O7mK2MCe9 rtu4hX2yS6Koz7Yt0FdcQ/6dB/tND35pbuOTNgs559ZDeTG5PRnQb7xz//FdzWuwBz ZO65yUUdAB4G9TzB1DMhcCwqZufdrLG3efVvowwPSVZn3nyJlaX7QbLNeKxKq8U1Wr VJcHK69Dntk4A== X-Nifty-SrcIP: [153.142.97.92] From: Masahiro Yamada To: devicetree@vger.kernel.org, Rob Herring , Frank Rowand Subject: [PATCH v3] libfdt: define INT32_MAX and UINT32_MAX in libfdt_env.h Date: Wed, 13 Nov 2019 16:12:02 +0900 Message-Id: <20191113071202.11287-1-yamada.masahiro@socionext.com> X-Mailer: git-send-email 2.17.1 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Russell King , linux-kernel@vger.kernel.org, Masahiro Yamada , Paul Mackerras , linuxppc-dev@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" The DTC v1.5.1 added references to (U)INT32_MAX. This is no problem for user-space programs since defines (U)INT32_MAX along with (u)int32_t. For the kernel space, libfdt_env.h needs to be adjusted before we pull in the changes. In the kernel, we usually use s/u32 instead of (u)int32_t for the fixed-width types. Accordingly, we already have S/U32_MAX for their max values. So, we should not add (U)INT32_MAX to any more. Instead, add them to the in-kernel libfdt_env.h to compile the latest libfdt. Signed-off-by: Masahiro Yamada --- My initial plan was to change this in a series of 3 patches since it is clean, and reduces the code. [1/3] https://lore.kernel.org/patchwork/patch/1147095/ [2/3] https://lore.kernel.org/patchwork/patch/1147096/ [3/3] https://lore.kernel.org/patchwork/patch/1147097/ 1/3 is stuck in the license bikeshed. For 2/3, I have not been able to get Ack from Russell. So, I chose a straight-forward fixup. Changes in v3: - Resend as a single patch arch/arm/boot/compressed/libfdt_env.h | 4 +++- arch/powerpc/boot/libfdt_env.h | 2 ++ include/linux/libfdt_env.h | 3 +++ 3 files changed, 8 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/compressed/libfdt_env.h b/arch/arm/boot/compressed/libfdt_env.h index b36c0289a308..6a0f1f524466 100644 --- a/arch/arm/boot/compressed/libfdt_env.h +++ b/arch/arm/boot/compressed/libfdt_env.h @@ -2,11 +2,13 @@ #ifndef _ARM_LIBFDT_ENV_H #define _ARM_LIBFDT_ENV_H +#include #include #include #include -#define INT_MAX ((int)(~0U>>1)) +#define INT32_MAX S32_MAX +#define UINT32_MAX U32_MAX typedef __be16 fdt16_t; typedef __be32 fdt32_t; diff --git a/arch/powerpc/boot/libfdt_env.h b/arch/powerpc/boot/libfdt_env.h index 2abc8e83b95e..9757d4f6331e 100644 --- a/arch/powerpc/boot/libfdt_env.h +++ b/arch/powerpc/boot/libfdt_env.h @@ -6,6 +6,8 @@ #include #define INT_MAX ((int)(~0U>>1)) +#define UINT32_MAX ((u32)~0U) +#define INT32_MAX ((s32)(UINT32_MAX >> 1)) #include "of.h" diff --git a/include/linux/libfdt_env.h b/include/linux/libfdt_env.h index edb0f0c30904..1adf54aad2df 100644 --- a/include/linux/libfdt_env.h +++ b/include/linux/libfdt_env.h @@ -7,6 +7,9 @@ #include +#define INT32_MAX S32_MAX +#define UINT32_MAX U32_MAX + typedef __be16 fdt16_t; typedef __be32 fdt32_t; typedef __be64 fdt64_t;