From patchwork Wed Jun 14 16:55:04 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jisheng Zhang X-Patchwork-Id: 108079 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:994d:0:b0:3d9:f83d:47d9 with SMTP id k13csp135373vqr; Wed, 14 Jun 2023 11:06:14 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ7Cv66L4I4lZ0liS5qhHHTIxvrkJrkpAxr5L8IizCPG0yX8lfouUUcS5RpQDKmo/GXG8tm1 X-Received: by 2002:a17:907:6e12:b0:977:ab43:731f with SMTP id sd18-20020a1709076e1200b00977ab43731fmr20604427ejc.66.1686765974168; Wed, 14 Jun 2023 11:06:14 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1686765974; cv=none; d=google.com; s=arc-20160816; b=nZEE8oVSAybt5I5F8rHEX2MUE9jGo32949Ba0ND3n9amo9ElJl9oNehGo10rJEbJoK R6Gn7VrDcDfN9axjOdFv66oluS7nqHwJdYwMewjZV4sXTUrBBASkHGh1nkxz97Gapx6N c8VkjdmamzKy+GhRvP6DOpNNw+osVCILeESBBRAR1j1b9LR8AKS6D+e2qZK4+8BsjuKv qRsDxiiXXIu2K75+cRo16E/3kFaLCsrczSe8itXSnAx75bUFlQaJg46Vb8FPJGAO73Kl BDbIUiHist7m2dyXVXD50HvvcB84EAAqpF9h5HcD7hJ7kHm0R01Bw5I2OLekQ1NhcX+Z osXQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=1c912ga+/eiXxdsYcONklV1EIJeRz6yMZku1xYhjdHA=; b=HlattATmC0AcDnJmBI1lp/De8/2RT6CUTY/+YNHzUInY12yrfadpoK19npiZZLPKEJ SCPHeQVRlrhNW7Qyrs7eImUFT2ymQvZUU20JA2JEFkmjL1EdHM+KFB0yp1czovQrSwVE ORk0mFBLcycF8G+57meMc/+VREeN78pIxyF2Qm1c3G9kmuRYk8Yv4UM4EChTkMyJjwUo KY52n+svcA0mZpMYfK1jh7sAGQ37eZW5wkyRqRntHrpaiJTLD+p7Cl315b1vmukywct6 rP7FjOTmPg+cgSk0FzB96RiVo8RrB0zWzhSqbpLAUvFC0KIF/YhfWCTlEq4aOMT4K2IV JTOw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b="nZaXe/Fq"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id y13-20020a1709064b0d00b009788a112566si8106772eju.116.2023.06.14.11.05.45; Wed, 14 Jun 2023 11:06:14 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b="nZaXe/Fq"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236578AbjFNRGf (ORCPT + 99 others); Wed, 14 Jun 2023 13:06:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37696 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236598AbjFNRGc (ORCPT ); Wed, 14 Jun 2023 13:06:32 -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 47068E41 for ; Wed, 14 Jun 2023 10:06:31 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id D120563995 for ; Wed, 14 Jun 2023 17:06:30 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B95D1C433C0; Wed, 14 Jun 2023 17:06:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1686762390; bh=r6WmK6pN8JZLuhkdUWl3EWEdgWXW6Xnybl6dJtROQn4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nZaXe/FqPg/6fky/CfXosBUmIW2Noo0nes4r5ymfjKVsNeqFuSRyQAxyHOhicbU4t xguaueQOiZ7lg7LuC9SFyUrh2P0DrP3BRZFk6aEj9nORUFle74Q5tC3e4MSpJGVIf6 iAj3cXwcdUq7gEUrskoIk0W5QGsDA6llLPqkweStT0KmYkBlSmlFQOTLsM/fQ1O0Qk 56pLS9sQSNLyZrPYWsipzdZWhQ0Mv8kFIuGEJ5pgp+58IqvqMeiX8ZtjYPh+F2mr5c RBtDCpKC/7v0rAvStUEsSXbFRMkDH0hhOUcuriJEokWCAD6jTa0Zy7HMREtmJj/CK4 vBbwyiuiVZz3Q== From: Jisheng Zhang To: Paul Walmsley , Palmer Dabbelt , Albert Ou Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Conor Dooley Subject: [PATCH 3/3] riscv: mm: mark noncoherent_supported as __ro_after_init Date: Thu, 15 Jun 2023 00:55:04 +0800 Message-Id: <20230614165504.532-4-jszhang@kernel.org> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230614165504.532-1-jszhang@kernel.org> References: <20230614165504.532-1-jszhang@kernel.org> MIME-Version: 1.0 X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1768702318338086986?= X-GMAIL-MSGID: =?utf-8?q?1768702318338086986?= The noncoherent_supported indicates whether the HW is coherent or not, it won't change after booting, mark it as __ro_after_init. Signed-off-by: Jisheng Zhang Reviewed-by: Conor Dooley --- arch/riscv/mm/dma-noncoherent.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/riscv/mm/dma-noncoherent.c b/arch/riscv/mm/dma-noncoherent.c index d919efab6eba..d51a75864e53 100644 --- a/arch/riscv/mm/dma-noncoherent.c +++ b/arch/riscv/mm/dma-noncoherent.c @@ -10,7 +10,7 @@ #include #include -static bool noncoherent_supported; +static bool noncoherent_supported __ro_after_init; void arch_sync_dma_for_device(phys_addr_t paddr, size_t size, enum dma_data_direction dir)