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IB/ipath: Fix user memory region creation when IOMMU present

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The loop which initializes the user memory region from an array of
pages was using the wrong limit for the array.  This worked OK when
dma_map_sg() returned the same number as the number of pages.  This
patch fixes the problem.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Bryan O'Sullivan 2007-03-15 14:44:46 -07:00 committed by Roland Dreier
parent 946db67fbf
commit 165c552c35
1 changed files with 9 additions and 3 deletions
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12
drivers/infiniband/hw/ipath/ipath_mr.c
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@ -210,9 +210,15 @@ struct ib_mr *ipath_reg_user_mr(struct ib_pd *pd, struct ib_umem *region,
m = 0;
n = 0;
list_for_each_entry(chunk, &region->chunk_list, list) {
for (i = 0; i < chunk->nmap; i++) {
mr->mr.map[m]->segs[n].vaddr =
page_address(chunk->page_list[i].page);
for (i = 0; i < chunk->nents; i++) {
void *vaddr;
vaddr = page_address(chunk->page_list[i].page);
if (!vaddr) {
ret = ERR_PTR(-EINVAL);
goto bail;
}
mr->mr.map[m]->segs[n].vaddr = vaddr;
mr->mr.map[m]->segs[n].length = region->page_size;
n++;
if (n == IPATH_SEGSZ) {