dmaengine: imx-dma: cleanup scatterlist layering violations
This dma engine driver directly accesses page_link assuming knowledge that should be contained only in scatterlist.h. We replace these with calls to sg_chain and sg_assign_page. 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>
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ba6ab3b359
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ce81801372
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@ -888,7 +888,7 @@ static struct dma_async_tx_descriptor *imxdma_prep_dma_cyclic(
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sg_init_table(imxdmac->sg_list, periods);
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for (i = 0; i < periods; i++) {
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imxdmac->sg_list[i].page_link = 0;
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sg_assign_page(&imxdmac->sg_list[i], NULL);
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imxdmac->sg_list[i].offset = 0;
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imxdmac->sg_list[i].dma_address = dma_addr;
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sg_dma_len(&imxdmac->sg_list[i]) = period_len;
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@ -896,10 +896,7 @@ static struct dma_async_tx_descriptor *imxdma_prep_dma_cyclic(
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}
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/* close the loop */
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imxdmac->sg_list[periods].offset = 0;
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sg_dma_len(&imxdmac->sg_list[periods]) = 0;
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imxdmac->sg_list[periods].page_link =
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((unsigned long)imxdmac->sg_list | 0x01) & ~0x02;
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sg_chain(imxdmac->sg_list, periods + 1, imxdmac->sg_list);
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desc->type = IMXDMA_DESC_CYCLIC;
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desc->sg = imxdmac->sg_list;
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