From patchwork Sun Aug 27 16:10:23 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 9923905 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 6DF7A603B4 for ; Sun, 27 Aug 2017 16:11:42 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 61F9528634 for ; Sun, 27 Aug 2017 16:11:42 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 56F522863D; Sun, 27 Aug 2017 16:11:42 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9532B28634 for ; Sun, 27 Aug 2017 16:11:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751182AbdH0QKx (ORCPT ); Sun, 27 Aug 2017 12:10:53 -0400 Received: from bombadil.infradead.org ([65.50.211.133]:37354 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751215AbdH0QKu (ORCPT ); Sun, 27 Aug 2017 12:10:50 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=References:In-Reply-To:Message-Id: Date:Subject:Cc:To:From:Sender:Reply-To:MIME-Version:Content-Type: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=ZYuyAai1c3LlTh72Pk1qkuq32O/lIGO5S/Jim+wR6E0=; b=FDSshF2hNi4MQ4QtJbnDF/p7K odc8Cpaa+MuCurPWU+qEUhIqzDeYZg+2OxITsuJanri0OxS8fkyuI8prJUAogyZXE4Ijk1u/DYJqd IeokhG5FEshJs1nf7LFvq6yEipI5AWMhuYVuEBEv+KTogvotOB4Ker3OcuVtC/LVEfqY7GOgqd/jO j41YRiqzW8WPtwgFmUyXE2Odj8j+cJuMu5rGjgzDFbEC/PFmqwxSXCC/Zw4zMAavMaGpxDf2NOK/Z afTqMRZ0U9Rsf4G3vZ/3tVxA7gT8II/x2rZYe0HrOqD3dFk1lRu0hM2gY35WB/MoMWJ0ViANeUEvI bwyd7ycFw==; Received: from clnet-p099-196.ikbnet.co.at ([83.175.99.196] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.87 #1 (Red Hat Linux)) id 1dm095-0006rS-8g; Sun, 27 Aug 2017 16:10:43 +0000 From: Christoph Hellwig To: iommu@lists.linux-foundation.org Cc: Marek Szyprowski , Robin Murphy , Michal Simek , David Howells , Guan Xuetao , Chris Zankel , Max Filippov , x86@kernel.org, linux-mips@linux-mips.org, linux-ia64@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-xtensa@linux-xtensa.org, linux-sh@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 03/12] frv: make dma_cache_sync a no-op Date: Sun, 27 Aug 2017 18:10:23 +0200 Message-Id: <20170827161032.22772-4-hch@lst.de> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170827161032.22772-1-hch@lst.de> References: <20170827161032.22772-1-hch@lst.de> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-sh-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP frv does not implement DMA_ATTR_NON_CONSISTENT allocations, so it doesn't make any sense to do any work in dma_cache_sync given that it must be a no-op when dma_alloc_attrs returns coherent memory. Signed-off-by: Christoph Hellwig --- arch/frv/include/asm/dma-mapping.h | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/frv/include/asm/dma-mapping.h b/arch/frv/include/asm/dma-mapping.h index 354900917585..da0e5c9744c4 100644 --- a/arch/frv/include/asm/dma-mapping.h +++ b/arch/frv/include/asm/dma-mapping.h @@ -18,7 +18,6 @@ static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size, enum dma_data_direction direction) { - flush_write_buffers(); } #endif /* _ASM_DMA_MAPPING_H */