From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2001:1868:205::9]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 46C3B1A067D for ; Wed, 12 Aug 2015 17:09:45 +1000 (AEST) From: Christoph Hellwig To: torvalds@linux-foundation.org, axboe@kernel.dk Cc: dan.j.williams@intel.com, vgupta@synopsys.com, hskinnemoen@gmail.com, egtvedt@samfundet.no, realmz6@gmail.com, dhowells@redhat.com, monstr@monstr.eu, x86@kernel.org, dwmw2@infradead.org, alex.williamson@redhat.com, grundler@parisc-linux.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, linux-alpha@vger.kernel.org, linux-ia64@vger.kernel.org, linux-metag@vger.kernel.org, linux-mips@linux-mips.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linux-xtensa@linux-xtensa.org, linux-nvdimm@ml01.01.org, linux-media@vger.kernel.org Subject: [PATCH 20/31] avr32: handle page-less SG entries Date: Wed, 12 Aug 2015 09:05:39 +0200 Message-Id: <1439363150-8661-21-git-send-email-hch@lst.de> In-Reply-To: <1439363150-8661-1-git-send-email-hch@lst.de> References: <1439363150-8661-1-git-send-email-hch@lst.de> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Make all cache invalidation conditional on sg_has_page() and use sg_phys to get the physical address directly, bypassing the noop page_to_bus. Signed-off-by: Christoph Hellwig --- arch/avr32/include/asm/dma-mapping.h | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/arch/avr32/include/asm/dma-mapping.h b/arch/avr32/include/asm/dma-mapping.h index ae7ac92..a662ce2 100644 --- a/arch/avr32/include/asm/dma-mapping.h +++ b/arch/avr32/include/asm/dma-mapping.h @@ -216,11 +216,9 @@ dma_map_sg(struct device *dev, struct scatterlist *sglist, int nents, struct scatterlist *sg; for_each_sg(sglist, sg, nents, i) { - char *virt; - - sg->dma_address = page_to_bus(sg_page(sg)) + sg->offset; - virt = sg_virt(sg); - dma_cache_sync(dev, virt, sg->length, direction); + sg->dma_address = sg_phys(sg); + if (sg_has_page(sg)) + dma_cache_sync(dev, sg_virt(sg), sg->length, direction); } return nents; @@ -328,8 +326,10 @@ dma_sync_sg_for_device(struct device *dev, struct scatterlist *sglist, int i; struct scatterlist *sg; - for_each_sg(sglist, sg, nents, i) - dma_cache_sync(dev, sg_virt(sg), sg->length, direction); + for_each_sg(sglist, sg, nents, i) { + if (sg_has_page(sg)) + dma_cache_sync(dev, sg_virt(sg), sg->length, direction); + } } /* Now for the API extensions over the pci_ one */ -- 1.9.1