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dmaengine: ste_dma40: Cleanup scatterlist layering violations 

This dma engine driver directly accesses page_link assuming knowledge
that should be contained only in scatterlist.h.

We replace this access with a call to sg_chain which is equivalent.

Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Stephen Bates <sbates@raithlin.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Vinod Koul <vinod.koul@intel.com>
Cc: Per Förlin <per.forlin@axis.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Logan Gunthorpe 2017-05-30 16:39:17 -06:00 committed by Vinod Koul
parent ce81801372
commit 838b56adab
1 changed files with 1 additions and 4 deletions
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5
drivers/dma/ste_dma40.c
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@ -2528,10 +2528,7 @@ dma40_prep_dma_cyclic(struct dma_chan *chan, dma_addr_t dma_addr,
dma_addr += period_len;
}
sg[periods].offset = 0;
sg_dma_len(&sg[periods]) = 0;
sg[periods].page_link =
((unsigned long)sg | 0x01) & ~0x02;
sg_chain(sg, periods + 1, sg);
txd = d40_prep_sg(chan, sg, sg, periods, direction,
DMA_PREP_INTERRUPT);