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Date: Wed, 12 Aug 2015 09:05:45 +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 26/31] openrisc: handle page-less SG entries Make all cache invalidation conditional on sg_has_page() and use sg_phys to get the physical address directly. Signed-off-by: Christoph Hellwig <hch@....de> --- arch/openrisc/kernel/dma.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/arch/openrisc/kernel/dma.c b/arch/openrisc/kernel/dma.c index 0b77ddb..94ed052 100644 --- a/arch/openrisc/kernel/dma.c +++ b/arch/openrisc/kernel/dma.c @@ -184,8 +184,13 @@ or1k_map_sg(struct device *dev, struct scatterlist *sg, int i; for_each_sg(sg, s, nents, i) { - s->dma_address = or1k_map_page(dev, sg_page(s), s->offset, - s->length, dir, NULL); + if (sg_has_page(s)) { + s->dma_address = or1k_map_page(dev, sg_page(s), + s->offset, s->length, dir, + NULL); + } else { + s->dma_address = sg_phys(s); + } } return nents; -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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