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authorSteve French <sfrench@us.ibm.com>2008-02-06 11:04:00 -0500
committerSteve French <sfrench@us.ibm.com>2008-02-06 11:04:00 -0500
commitf315ccb3e679f271583f2a4f463ad9b65665b751 (patch)
tree44eb52102587d7b0bb592464cef6ec04bcac8b90 /arch/ia64/hp/common/sba_iommu.c
parentead03e30b050d6dda769e7e9b071c5fa720bf8d2 (diff)
parent551e4fb2465b87de9d4aa1669b27d624435443bb (diff)
Merge branch 'master' of /pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'arch/ia64/hp/common/sba_iommu.c')
-rw-r--r--arch/ia64/hp/common/sba_iommu.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/arch/ia64/hp/common/sba_iommu.c b/arch/ia64/hp/common/sba_iommu.c
index 45bf04eb7d70..a94445422cc6 100644
--- a/arch/ia64/hp/common/sba_iommu.c
+++ b/arch/ia64/hp/common/sba_iommu.c
@@ -1265,7 +1265,7 @@ sba_fill_pdir(
1265 * the sglist do both. 1265 * the sglist do both.
1266 */ 1266 */
1267static SBA_INLINE int 1267static SBA_INLINE int
1268sba_coalesce_chunks( struct ioc *ioc, 1268sba_coalesce_chunks(struct ioc *ioc, struct device *dev,
1269 struct scatterlist *startsg, 1269 struct scatterlist *startsg,
1270 int nents) 1270 int nents)
1271{ 1271{
@@ -1275,6 +1275,7 @@ sba_coalesce_chunks( struct ioc *ioc,
1275 struct scatterlist *dma_sg; /* next DMA stream head */ 1275 struct scatterlist *dma_sg; /* next DMA stream head */
1276 unsigned long dma_offset, dma_len; /* start/len of DMA stream */ 1276 unsigned long dma_offset, dma_len; /* start/len of DMA stream */
1277 int n_mappings = 0; 1277 int n_mappings = 0;
1278 unsigned int max_seg_size = dma_get_max_seg_size(dev);
1278 1279
1279 while (nents > 0) { 1280 while (nents > 0) {
1280 unsigned long vaddr = (unsigned long) sba_sg_address(startsg); 1281 unsigned long vaddr = (unsigned long) sba_sg_address(startsg);
@@ -1314,6 +1315,9 @@ sba_coalesce_chunks( struct ioc *ioc,
1314 > DMA_CHUNK_SIZE) 1315 > DMA_CHUNK_SIZE)
1315 break; 1316 break;
1316 1317
1318 if (dma_len + startsg->length > max_seg_size)
1319 break;
1320
1317 /* 1321 /*
1318 ** Then look for virtually contiguous blocks. 1322 ** Then look for virtually contiguous blocks.
1319 ** 1323 **
@@ -1441,7 +1445,7 @@ int sba_map_sg(struct device *dev, struct scatterlist *sglist, int nents, int di
1441 ** w/o this association, we wouldn't have coherent DMA! 1445 ** w/o this association, we wouldn't have coherent DMA!
1442 ** Access to the virtual address is what forces a two pass algorithm. 1446 ** Access to the virtual address is what forces a two pass algorithm.
1443 */ 1447 */
1444 coalesced = sba_coalesce_chunks(ioc, sglist, nents); 1448 coalesced = sba_coalesce_chunks(ioc, dev, sglist, nents);
1445 1449
1446 /* 1450 /*
1447 ** Program the I/O Pdir 1451 ** Program the I/O Pdir
@@ -1871,7 +1875,7 @@ ioc_show(struct seq_file *s, void *v)
1871 return 0; 1875 return 0;
1872} 1876}
1873 1877
1874static struct seq_operations ioc_seq_ops = { 1878static const struct seq_operations ioc_seq_ops = {
1875 .start = ioc_start, 1879 .start = ioc_start,
1876 .next = ioc_next, 1880 .next = ioc_next,
1877 .stop = ioc_stop, 1881 .stop = ioc_stop,