From nobody Mon Feb 9 13:17:51 2026 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 017C5CA0FE6 for ; Fri, 1 Sep 2023 10:52:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349045AbjIAKwH (ORCPT ); Fri, 1 Sep 2023 06:52:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52828 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232274AbjIAKwF (ORCPT ); Fri, 1 Sep 2023 06:52:05 -0400 Received: from mail-lj1-x231.google.com (mail-lj1-x231.google.com [IPv6:2a00:1450:4864:20::231]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E1C6E10CC for ; Fri, 1 Sep 2023 03:52:02 -0700 (PDT) Received: by mail-lj1-x231.google.com with SMTP id 38308e7fff4ca-2bcb50e194dso32305731fa.3 for ; Fri, 01 Sep 2023 03:52:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1693565521; x=1694170321; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=3Xmp9WqBbQgAo1cevlJdH0YFWuDdqUeSzKBH4Ev5l8s=; b=L5ynpmZDh6C13olvawaeYSu2qC8FlV5QwPw4S61lz/NyC0n4usnGqI+8D2N3Qcn36/ QXN2KEBYW4ieh5RrU0/OJHCFC2SZJVGcq4AALd/4aYkOft0YOb9ukeD+qgfnTU/aG5sP fgtJZPS3WQ16TwqsCZ8Ft+FVS0CxQgyRKYoqhTNszRQHnRhHVeiRmtH/bvb1mWfzs2DE T66DNebWNyyrRCDuk+fuFL8EiTdb0hv0MlRMLr+BK5qVmUpCZrIXZGG46G0tOMOmLkZu oGeHNCqfbtEDd/JTh6vz5/7rMzef2zYsPlhahZiaoVAH8im4kMc6OelBYvuHkBVa7TXZ W3Tw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1693565521; x=1694170321; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=3Xmp9WqBbQgAo1cevlJdH0YFWuDdqUeSzKBH4Ev5l8s=; b=huZkSg4nfwnXM12MHH08aIqB+TVk0HT4b+dOkJE1J2YHYhRrYFGwjfcPEWj7OheKRF oeLWeJFPKDXfyqGsnNBkRVLO6Ai/fGyLgqbm2VVXcoPN6SrcJ5LfR4X3/d8aicIYdM0+ mwTXOuh9pO655tL0UkQbVh7dihYG6G0a6+nVcEPTfPiD4BRyYVPSDoTqT3qbyKUqCNgL TcMGLZQ5vHPNT6cOw9sw/uv69qyldsMqH4YzmFEu4/I+ene441XQOeIOMg5quDzGAzm0 lPnOZDyS0gDVjtCu1RaZ5Pj+fdAG6RMQO3dAhq3eocGVBFdgUYnGjtkk1KzaE/OcFzp0 kE8g== X-Gm-Message-State: AOJu0Yxg2/pCjLldtyLQSPN8m3mJYO/YX23uN8gu44bZtpXbr0eRagEu iqd+/DOAXPK51WexMToUUBo= X-Google-Smtp-Source: AGHT+IGGkITGqugrHo6c9lWxjv069VV2n6HMgoHi23eIRSVL/TtfI5z/CRm5kFpMVR3m/saeOUWXIQ== X-Received: by 2002:a2e:7403:0:b0:2b6:cdfb:d06a with SMTP id p3-20020a2e7403000000b002b6cdfbd06amr1275906ljc.22.1693565520727; Fri, 01 Sep 2023 03:52:00 -0700 (PDT) Received: from prasmi.home ([2a00:23c8:2501:c701:64d6:8737:b80d:a298]) by smtp.gmail.com with ESMTPSA id 16-20020a05600c025000b003fee7b67f67sm4497495wmj.31.2023.09.01.03.51.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 01 Sep 2023 03:52:00 -0700 (PDT) From: Prabhakar X-Google-Original-From: Prabhakar To: Paul Walmsley , Palmer Dabbelt , Albert Ou , Conor Dooley , Geert Uytterhoeven , linux-riscv@lists.infradead.org Cc: linux-kernel@vger.kernel.org, Prabhakar , Lad Prabhakar Subject: [PATCH] riscv: Kconfig: Select DMA_DIRECT_REMAP only if MMU is enabled Date: Fri, 1 Sep 2023 11:51:11 +0100 Message-Id: <20230901105111.311200-1-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Lad Prabhakar kernel/dma/mapping.c has its use of pgprot_dmacoherent() inside an #ifdef CONFIG_MMU block. kernel/dma/pool.c has its use of pgprot_dmacoherent() inside an #ifdef CONFIG_DMA_DIRECT_REMAP block. So select DMA_DIRECT_REMAP only if MMU is enabled for RISCV_DMA_NONCOHERENT config. This avoids users to explicitly select MMU. Suggested-by: Geert Uytterhoeven Signed-off-by: Lad Prabhakar --- arch/riscv/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 468063780a93..a065abdc80e3 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -273,7 +273,7 @@ config RISCV_DMA_NONCOHERENT select ARCH_HAS_SYNC_DMA_FOR_CPU select ARCH_HAS_SYNC_DMA_FOR_DEVICE select DMA_BOUNCE_UNALIGNED_KMALLOC if SWIOTLB - select DMA_DIRECT_REMAP + select DMA_DIRECT_REMAP if MMU =20 config RISCV_NONSTANDARD_CACHE_OPS bool --=20 2.34.1