X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=lib%2Fswiotlb.c;h=30c1400e749e8299be6767e32e9f3531ae18a0a4;hb=6b0c880dfefecedb9ad353014ed41505c32aca82;hp=9970e55c90bd7b28d90c5912bf3f63da3a4c7dc2;hpb=2f774456e4b9bc3d4fb3522b2482c7acfa2df197;p=linux-2.6

diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 9970e55c90..30c1400e74 100644
--- 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))
@@ -494,6 +497,7 @@ void
 swiotlb_free_coherent(struct device *hwdev, size_t size, void *vaddr,
 		      dma_addr_t dma_handle)
 {
+	WARN_ON(irqs_disabled());
 	if (!(vaddr >= (void *)io_tlb_start
                     && vaddr < (void *)io_tlb_end))
 		free_pages((unsigned long) vaddr, get_order(size));
@@ -778,7 +782,6 @@ 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);