From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg0-f70.google.com (mail-pg0-f70.google.com [74.125.83.70]) by kanga.kvack.org (Postfix) with ESMTP id DD4E06B0012 for ; Wed, 25 Apr 2018 01:16:47 -0400 (EDT) Received: by mail-pg0-f70.google.com with SMTP id b18so10096604pgv.14 for ; Tue, 24 Apr 2018 22:16:47 -0700 (PDT) Received: from bombadil.infradead.org (bombadil.infradead.org. [2607:7c80:54:e::133]) by mx.google.com with ESMTPS id x32-v6si15471896pld.435.2018.04.24.22.16.46 for (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 24 Apr 2018 22:16:46 -0700 (PDT) From: Christoph Hellwig Subject: [PATCH 11/13] mips,unicore32: swiotlb doesn't need sg->dma_length Date: Wed, 25 Apr 2018 07:15:37 +0200 Message-Id: <20180425051539.1989-12-hch@lst.de> In-Reply-To: <20180425051539.1989-1-hch@lst.de> References: <20180425051539.1989-1-hch@lst.de> Sender: owner-linux-mm@kvack.org List-ID: To: Konrad Rzeszutek Wilk , iommu@lists.linux-foundation.org Cc: sstabellini@kernel.org, x86@kernel.org, linux-pci@vger.kernel.org, linux-mm@kvack.org, linux-mips@linux-mips.org, sparclinux@vger.kernel.org, linux-arm-kernel@lists.infradead.org Only mips and unicore32 select CONFIG_NEED_SG_DMA_LENGTH when building swiotlb. swiotlb itself never merges segements and doesn't accesses the dma_length field directly, so drop the dependency. Signed-off-by: Christoph Hellwig --- arch/mips/cavium-octeon/Kconfig | 1 - arch/mips/loongson64/Kconfig | 1 - arch/unicore32/mm/Kconfig | 1 - 3 files changed, 3 deletions(-) diff --git a/arch/mips/cavium-octeon/Kconfig b/arch/mips/cavium-octeon/Kconfig index 5d73041547a7..eb5faeed4f66 100644 --- a/arch/mips/cavium-octeon/Kconfig +++ b/arch/mips/cavium-octeon/Kconfig @@ -70,7 +70,6 @@ config CAVIUM_OCTEON_LOCK_L2_MEMCPY config SWIOTLB def_bool y select DMA_DIRECT_OPS - select NEED_SG_DMA_LENGTH config OCTEON_ILM tristate "Module to measure interrupt latency using Octeon CIU Timer" diff --git a/arch/mips/loongson64/Kconfig b/arch/mips/loongson64/Kconfig index 641a1477031e..2a4fb91adbb6 100644 --- a/arch/mips/loongson64/Kconfig +++ b/arch/mips/loongson64/Kconfig @@ -135,7 +135,6 @@ config SWIOTLB default y depends on CPU_LOONGSON3 select DMA_DIRECT_OPS - select NEED_SG_DMA_LENGTH select NEED_DMA_MAP_STATE config PHYS48_TO_HT40 diff --git a/arch/unicore32/mm/Kconfig b/arch/unicore32/mm/Kconfig index 1d9fed0ada71..45b7f769375e 100644 --- a/arch/unicore32/mm/Kconfig +++ b/arch/unicore32/mm/Kconfig @@ -43,4 +43,3 @@ config CPU_TLB_SINGLE_ENTRY_DISABLE config SWIOTLB def_bool y select DMA_DIRECT_OPS - select NEED_SG_DMA_LENGTH -- 2.17.0