diff options
Diffstat (limited to 'drivers/parisc')
| -rw-r--r-- | drivers/parisc/ccio-dma.c | 2 | ||||
| -rw-r--r-- | drivers/parisc/iommu-helpers.h | 15 |
2 files changed, 8 insertions, 9 deletions
diff --git a/drivers/parisc/ccio-dma.c b/drivers/parisc/ccio-dma.c index 957b42198328..8e11fb2831cd 100644 --- a/drivers/parisc/ccio-dma.c +++ b/drivers/parisc/ccio-dma.c @@ -704,8 +704,6 @@ ccio_mark_invalid(struct ioc *ioc, dma_addr_t iova, size_t byte_cnt) * ccio_dma_supported - Verify the IOMMU supports the DMA address range. * @dev: The PCI device. * @mask: A bit mask describing the DMA address range of the device. - * - * This function implements the pci_dma_supported function. */ static int ccio_dma_supported(struct device *dev, u64 mask) diff --git a/drivers/parisc/iommu-helpers.h b/drivers/parisc/iommu-helpers.h index 761e77bfce5d..e56f1569f6c3 100644 --- a/drivers/parisc/iommu-helpers.h +++ b/drivers/parisc/iommu-helpers.h @@ -104,7 +104,11 @@ iommu_coalesce_chunks(struct ioc *ioc, struct device *dev, struct scatterlist *contig_sg; /* contig chunk head */ unsigned long dma_offset, dma_len; /* start/len of DMA stream */ unsigned int n_mappings = 0; - unsigned int max_seg_size = dma_get_max_seg_size(dev); + unsigned int max_seg_size = min(dma_get_max_seg_size(dev), + (unsigned)DMA_CHUNK_SIZE); + unsigned int max_seg_boundary = dma_get_seg_boundary(dev) + 1; + if (max_seg_boundary) /* check if the addition above didn't overflow */ + max_seg_size = min(max_seg_size, max_seg_boundary); while (nents > 0) { @@ -138,14 +142,11 @@ iommu_coalesce_chunks(struct ioc *ioc, struct device *dev, /* ** First make sure current dma stream won't - ** exceed DMA_CHUNK_SIZE if we coalesce the + ** exceed max_seg_size if we coalesce the ** next entry. */ - if(unlikely(ALIGN(dma_len + dma_offset + startsg->length, - IOVP_SIZE) > DMA_CHUNK_SIZE)) - break; - - if (startsg->length + dma_len > max_seg_size) + if (unlikely(ALIGN(dma_len + dma_offset + startsg->length, IOVP_SIZE) > + max_seg_size)) break; /* |