diff options
Diffstat (limited to 'drivers/infiniband/hw/qedr/verbs.c')
| -rw-r--r-- | drivers/infiniband/hw/qedr/verbs.c | 16 |
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", |