Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

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

Browse source 
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
Show stats Download patch file Download diff file Expand all files Collapse all files

12
drivers/infiniband/hw/ipath/ipath_mr.c
View file

@ -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) {