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path: root/drivers/infiniband/hw/qedr/verbs.c
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Diffstat (limited to 'drivers/infiniband/hw/qedr/verbs.c')
-rw-r--r--drivers/infiniband/hw/qedr/verbs.c16
1 files changed, 12 insertions, 4 deletions
diff --git a/drivers/infiniband/hw/qedr/verbs.c b/drivers/infiniband/hw/qedr/verbs.c
index 548e4d1e998f..2ae71b8f1ba8 100644
--- a/drivers/infiniband/hw/qedr/verbs.c
+++ b/drivers/infiniband/hw/qedr/verbs.c
@@ -53,6 +53,14 @@
#define DB_ADDR_SHIFT(addr) ((addr) << DB_PWM_ADDR_OFFSET_SHIFT)
+static inline int qedr_ib_copy_to_udata(struct ib_udata *udata, void *src,
+ size_t len)
+{
+ size_t min_len = min_t(size_t, len, udata->outlen);
+
+ return ib_copy_to_udata(udata, src, min_len);
+}
+
int qedr_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
{
if (index > QEDR_ROCE_PKEY_TABLE_LEN)
@@ -378,7 +386,7 @@ struct ib_ucontext *qedr_alloc_ucontext(struct ib_device *ibdev,
uresp.sges_per_srq_wr = dev->attr.max_srq_sge;
uresp.max_cqes = QEDR_MAX_CQES;
- rc = ib_copy_to_udata(udata, &uresp, sizeof(uresp));
+ rc = qedr_ib_copy_to_udata(udata, &uresp, sizeof(uresp));
if (rc)
goto err;
@@ -499,7 +507,7 @@ struct ib_pd *qedr_alloc_pd(struct ib_device *ibdev,
uresp.pd_id = pd_id;
- rc = ib_copy_to_udata(udata, &uresp, sizeof(uresp));
+ rc = qedr_ib_copy_to_udata(udata, &uresp, sizeof(uresp));
if (rc) {
DP_ERR(dev, "copy error pd_id=0x%x.\n", pd_id);
dev->ops->rdma_dealloc_pd(dev->rdma_ctx, pd_id);
@@ -729,7 +737,7 @@ static int qedr_copy_cq_uresp(struct qedr_dev *dev,
uresp.db_offset = DB_ADDR_SHIFT(DQ_PWM_OFFSET_UCM_RDMA_CQ_CONS_32BIT);
uresp.icid = cq->icid;
- rc = ib_copy_to_udata(udata, &uresp, sizeof(uresp));
+ rc = qedr_ib_copy_to_udata(udata, &uresp, sizeof(uresp));
if (rc)
DP_ERR(dev, "copy error cqid=0x%x.\n", cq->icid);
@@ -1238,7 +1246,7 @@ static int qedr_copy_qp_uresp(struct qedr_dev *dev,
uresp.atomic_supported = dev->atomic_cap != IB_ATOMIC_NONE;
uresp.qp_id = qp->qp_id;
- rc = ib_copy_to_udata(udata, &uresp, sizeof(uresp));
+ rc = qedr_ib_copy_to_udata(udata, &uresp, sizeof(uresp));
if (rc)
DP_ERR(dev,
"create qp: failed a copy to user space with qp icid=0x%x.\n",