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Diffstat (limited to 'net')
-rw-r--r--net/9p/trans_rdma.c15
1 files changed, 12 insertions, 3 deletions
diff --git a/net/9p/trans_rdma.c b/net/9p/trans_rdma.c
index 83f9100d46bf..b84748baf9cb 100644
--- a/net/9p/trans_rdma.c
+++ b/net/9p/trans_rdma.c
@@ -385,6 +385,7 @@ post_recv(struct p9_client *client, struct p9_rdma_context *c)
struct p9_trans_rdma *rdma = client->trans;
struct ib_recv_wr wr;
struct ib_sge sge;
+ int ret;
c->busa = ib_dma_map_single(rdma->cm_id->device,
c->rc.sdata, client->msize,
@@ -402,7 +403,12 @@ post_recv(struct p9_client *client, struct p9_rdma_context *c)
wr.wr_cqe = &c->cqe;
wr.sg_list = &sge;
wr.num_sge = 1;
- return ib_post_recv(rdma->qp, &wr, NULL);
+
+ ret = ib_post_recv(rdma->qp, &wr, NULL);
+ if (ret)
+ ib_dma_unmap_single(rdma->cm_id->device, c->busa,
+ client->msize, DMA_FROM_DEVICE);
+ return ret;
error:
p9_debug(P9_DEBUG_ERROR, "EIO\n");
@@ -499,7 +505,7 @@ dont_need_post_recv:
if (down_interruptible(&rdma->sq_sem)) {
err = -EINTR;
- goto send_error;
+ goto dma_unmap;
}
/* Mark request as `sent' *before* we actually send it,
@@ -509,11 +515,14 @@ dont_need_post_recv:
WRITE_ONCE(req->status, REQ_STATUS_SENT);
err = ib_post_send(rdma->qp, &wr, NULL);
if (err)
- goto send_error;
+ goto dma_unmap;
/* Success */
return 0;
+dma_unmap:
+ ib_dma_unmap_single(rdma->cm_id->device, c->busa,
+ c->req->tc.size, DMA_TO_DEVICE);
/* Handle errors that happened during or while preparing the send: */
send_error:
WRITE_ONCE(req->status, REQ_STATUS_ERROR);