Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm

[pandora-kernel.git] / lib / swiotlb.c

diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 9970e55..a7381d5 100644 (file)
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -357,7 +357,8 @@ map_single(struct device *hwdev, char *buffer, size_t size, int dir)
         * This is needed when we sync the memory.  Then we sync the buffer if
         * needed.
         */
-       io_tlb_orig_addr[index] = buffer;
+       for (i = 0; i < nslots; i++)
+               io_tlb_orig_addr[index+i] = buffer + (i << IO_TLB_SHIFT);
        if (dir == DMA_TO_DEVICE || dir == DMA_BIDIRECTIONAL)
                memcpy(dma_addr, buffer, size);
 
@@ -418,6 +419,8 @@ sync_single(struct device *hwdev, char *dma_addr, size_t size,
        int index = (dma_addr - io_tlb_start) >> IO_TLB_SHIFT;
        char *buffer = io_tlb_orig_addr[index];
 
+       buffer += ((unsigned long)dma_addr & ((1 << IO_TLB_SHIFT) - 1));
+
        switch (target) {
        case SYNC_FOR_CPU:
                if (likely(dir == DMA_FROM_DEVICE || dir == DMA_BIDIRECTIONAL))
@@ -778,7 +781,6 @@ swiotlb_dma_supported(struct device *hwdev, u64 mask)
        return virt_to_bus(io_tlb_end - 1) <= mask;
 }
 
-EXPORT_SYMBOL(swiotlb_init);
 EXPORT_SYMBOL(swiotlb_map_single);
 EXPORT_SYMBOL(swiotlb_unmap_single);
 EXPORT_SYMBOL(swiotlb_map_sg);