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Diffstat (limited to 'net/rds/ib_fmr.c')
-rw-r--r--net/rds/ib_fmr.c38
1 files changed, 24 insertions, 14 deletions
diff --git a/net/rds/ib_fmr.c b/net/rds/ib_fmr.c
index 4fe8f4fec4ee..86ef907067bb 100644
--- a/net/rds/ib_fmr.c
+++ b/net/rds/ib_fmr.c
@@ -78,17 +78,15 @@ struct rds_ib_mr *rds_ib_alloc_fmr(struct rds_ib_device *rds_ibdev, int npages)
return ibmr;
out_no_cigar:
- if (ibmr) {
- if (fmr->fmr)
- ib_dealloc_fmr(fmr->fmr);
- kfree(ibmr);
- }
+ kfree(ibmr);
atomic_dec(&pool->item_count);
+
return ERR_PTR(err);
}
-int rds_ib_map_fmr(struct rds_ib_device *rds_ibdev, struct rds_ib_mr *ibmr,
- struct scatterlist *sg, unsigned int nents)
+static int rds_ib_map_fmr(struct rds_ib_device *rds_ibdev,
+ struct rds_ib_mr *ibmr, struct scatterlist *sg,
+ unsigned int nents)
{
struct ib_device *dev = rds_ibdev->dev;
struct rds_ib_fmr *fmr = &ibmr->u.fmr;
@@ -114,29 +112,39 @@ int rds_ib_map_fmr(struct rds_ib_device *rds_ibdev, struct rds_ib_mr *ibmr,
u64 dma_addr = ib_sg_dma_address(dev, &scat[i]);
if (dma_addr & ~PAGE_MASK) {
- if (i > 0)
+ if (i > 0) {
+ ib_dma_unmap_sg(dev, sg, nents,
+ DMA_BIDIRECTIONAL);
return -EINVAL;
- else
+ } else {
++page_cnt;
+ }
}
if ((dma_addr + dma_len) & ~PAGE_MASK) {
- if (i < sg_dma_len - 1)
+ if (i < sg_dma_len - 1) {
+ ib_dma_unmap_sg(dev, sg, nents,
+ DMA_BIDIRECTIONAL);
return -EINVAL;
- else
+ } else {
++page_cnt;
+ }
}
len += dma_len;
}
page_cnt += len >> PAGE_SHIFT;
- if (page_cnt > ibmr->pool->fmr_attr.max_pages)
+ if (page_cnt > ibmr->pool->fmr_attr.max_pages) {
+ ib_dma_unmap_sg(dev, sg, nents, DMA_BIDIRECTIONAL);
return -EINVAL;
+ }
dma_pages = kmalloc_node(sizeof(u64) * page_cnt, GFP_ATOMIC,
rdsibdev_to_node(rds_ibdev));
- if (!dma_pages)
+ if (!dma_pages) {
+ ib_dma_unmap_sg(dev, sg, nents, DMA_BIDIRECTIONAL);
return -ENOMEM;
+ }
page_cnt = 0;
for (i = 0; i < sg_dma_len; ++i) {
@@ -149,8 +157,10 @@ int rds_ib_map_fmr(struct rds_ib_device *rds_ibdev, struct rds_ib_mr *ibmr,
}
ret = ib_map_phys_fmr(fmr->fmr, dma_pages, page_cnt, io_addr);
- if (ret)
+ if (ret) {
+ ib_dma_unmap_sg(dev, sg, nents, DMA_BIDIRECTIONAL);
goto out;
+ }
/* Success - we successfully remapped the MR, so we can
* safely tear down the old mapping.