dma_addr_t mapping;
mapping = dma_map_single(cp->dev, buffer, len, DMA_FROM_DEVICE);
- if (dma_mapping_error(cp->dev, dma_handle)) {
+ if (dma_mapping_error(cp->dev, mapping)) {
/*
* reduce current DMA mapping usage,
* delay and try again later or
1) Struct scatterlist requirements.
- Don't invent the architecture specific struct scatterlist; just use
- <asm-generic/scatterlist.h>. You need to enable
- CONFIG_NEED_SG_DMA_LENGTH if the architecture supports IOMMUs
- (including software IOMMU).
+ You need to enable CONFIG_NEED_SG_DMA_LENGTH if the architecture
+ supports IOMMUs (including software IOMMU).
2) ARCH_DMA_MINALIGN