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 C82B7C77B76 for ; Thu, 13 Apr 2023 02:39:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230320AbjDMCjo (ORCPT ); Wed, 12 Apr 2023 22:39:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34510 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230376AbjDMCjB (ORCPT ); Wed, 12 Apr 2023 22:39:01 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 19B3D86A1; Wed, 12 Apr 2023 19:37:49 -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 dfw.source.kernel.org (Postfix) with ESMTPS id 526E663AAB; Thu, 13 Apr 2023 02:37:24 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 11E5FC433D2; Thu, 13 Apr 2023 02:37:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1681353443; bh=++5gnSPH5suOIckcoNOW3Cu+lShLaYYyqEza+Scb1Ps=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=k9+hgmYSVaA7VpBMxUYsZOUPMcfoqh71nTwj03mTc8cuVEnBfOzt9PD+dhABGVtJR rco+MxnJyuX0LMGIaynmSUQedOqceVMOIYiBsyE5gi0AfgoAy/IcX9zLH6hm0k0yj0 ihwGcZ/UIhf8FXPdXlhE46ylwgsR4ksy5K6k1XUeHhlHroVfyhJRPOA4QP7ErmM9i2 FJ06SjFnj3rB+Zwsv6yIBijsMRyTYFV/LLmQYk6Kv+90Wnya7YZ6CdR5IM5TIaDxVK 29326rx6DIUxAHEqlu31+WoslKjofdAGerh7ldFXpmYaifdtWOgprzSHkaSike8v7I uc84V4Lxi9edQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Vladimir Oltean , Arnd Bergmann , Jonathan Cameron , Sasha Levin , linux-arch@vger.kernel.org Subject: [PATCH AUTOSEL 6.1 16/17] asm-generic/io.h: suppress endianness warnings for readq() and writeq() Date: Wed, 12 Apr 2023 22:36:44 -0400 Message-Id: <20230413023647.74661-16-sashal@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230413023647.74661-1-sashal@kernel.org> References: <20230413023647.74661-1-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: Vladimir Oltean [ Upstream commit d564fa1ff19e893e2971d66e5c8f49dc1cdc8ffc ] Commit c1d55d50139b ("asm-generic/io.h: Fix sparse warnings on big-endian architectures") missed fixing the 64-bit accessors. Arnd explains in the attached link why the casts are necessary, even if __raw_readq() and __raw_writeq() do not take endian-specific types. Link: https://lore.kernel.org/lkml/9105d6fc-880b-4734-857d-e3d30b87ccf6@app.fastmail.com/ Suggested-by: Arnd Bergmann Signed-off-by: Vladimir Oltean Reviewed-by: Jonathan Cameron Signed-off-by: Arnd Bergmann Signed-off-by: Sasha Levin --- include/asm-generic/io.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h index a68f8fbf423be..cde032f86856e 100644 --- a/include/asm-generic/io.h +++ b/include/asm-generic/io.h @@ -236,7 +236,7 @@ static inline u64 readq(const volatile void __iomem *addr) log_read_mmio(64, addr, _THIS_IP_); __io_br(); - val = __le64_to_cpu(__raw_readq(addr)); + val = __le64_to_cpu((__le64 __force)__raw_readq(addr)); __io_ar(val); log_post_read_mmio(val, 64, addr, _THIS_IP_); return val; @@ -287,7 +287,7 @@ static inline void writeq(u64 value, volatile void __iomem *addr) { log_write_mmio(value, 64, addr, _THIS_IP_); __io_bw(); - __raw_writeq(__cpu_to_le64(value), addr); + __raw_writeq((u64 __force)__cpu_to_le64(value), addr); __io_aw(); log_post_write_mmio(value, 64, addr, _THIS_IP_); } -- 2.39.2