linux-kernel - [PATCH 21/31] blackfin: handle page-less SG entries

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Date:	Wed, 12 Aug 2015 09:05:40 +0200
From:	Christoph Hellwig <hch@....de>
To:	torvalds@...ux-foundation.org, axboe@...nel.dk
Cc:	dan.j.williams@...el.com, vgupta@...opsys.com,
	hskinnemoen@...il.com, egtvedt@...fundet.no, realmz6@...il.com,
	dhowells@...hat.com, monstr@...str.eu, x86@...nel.org,
	dwmw2@...radead.org, alex.williamson@...hat.com,
	grundler@...isc-linux.org, linux-kernel@...r.kernel.org,
	linux-arch@...r.kernel.org, linux-alpha@...r.kernel.org,
	linux-ia64@...r.kernel.org, linux-metag@...r.kernel.org,
	linux-mips@...ux-mips.org, linux-parisc@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org, linux-s390@...r.kernel.org,
	sparclinux@...r.kernel.org, linux-xtensa@...ux-xtensa.org,
	linux-nvdimm@...1.01.org, linux-media@...r.kernel.org
Subject: [PATCH 21/31] blackfin: handle page-less SG entries

Switch from sg_virt to sg_phys as blackfin like all nommu architectures
has a 1:1 virtual to physical mapping.

Signed-off-by: Christoph Hellwig <hch@....de>
---
 arch/blackfin/kernel/dma-mapping.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/blackfin/kernel/dma-mapping.c b/arch/blackfin/kernel/dma-mapping.c
index df437e5..e2c4d1a 100644
--- a/arch/blackfin/kernel/dma-mapping.c
+++ b/arch/blackfin/kernel/dma-mapping.c
@@ -120,7 +120,7 @@ dma_map_sg(struct device *dev, struct scatterlist *sg_list, int nents,
 	int i;
 
 	for_each_sg(sg_list, sg, nents, i) {
-		sg->dma_address = (dma_addr_t) sg_virt(sg);
+		sg->dma_address = sg_phys(sg);
 		__dma_sync(sg_dma_address(sg), sg_dma_len(sg), direction);
 	}
 
@@ -135,7 +135,7 @@ void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg_list,
 	int i;
 
 	for_each_sg(sg_list, sg, nelems, i) {
-		sg->dma_address = (dma_addr_t) sg_virt(sg);
+		sg->dma_address = sg_phys(sg);
 		__dma_sync(sg_dma_address(sg), sg_dma_len(sg), direction);
 	}
 }
-- 
1.9.1

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