diff options
Diffstat (limited to 'drivers/infiniband/hw/hfi1/file_ops.c')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/file_ops.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/infiniband/hw/hfi1/file_ops.c b/drivers/infiniband/hw/hfi1/file_ops.c index b1d6ca7e9708..f3d6ce45c397 100644 --- a/drivers/infiniband/hw/hfi1/file_ops.c +++ b/drivers/infiniband/hw/hfi1/file_ops.c @@ -267,6 +267,8 @@ static ssize_t hfi1_write_iter(struct kiocb *kiocb, struct iov_iter *from) if (!HFI1_CAP_IS_KSET(SDMA)) return -EINVAL; + if (!from->user_backed) + return -EINVAL; idx = srcu_read_lock(&fd->pq_srcu); pq = srcu_dereference(fd->pq, &fd->pq_srcu); if (!cq || !pq) { @@ -274,11 +276,6 @@ static ssize_t hfi1_write_iter(struct kiocb *kiocb, struct iov_iter *from) return -EIO; } - if (!iter_is_iovec(from) || !dim) { - srcu_read_unlock(&fd->pq_srcu, idx); - return -EINVAL; - } - trace_hfi1_sdma_request(fd->dd, fd->uctxt->ctxt, fd->subctxt, dim); if (atomic_read(&pq->n_reqs) == pq->n_max_reqs) { @@ -287,11 +284,12 @@ static ssize_t hfi1_write_iter(struct kiocb *kiocb, struct iov_iter *from) } while (dim) { + const struct iovec *iov = iter_iov(from); int ret; unsigned long count = 0; ret = hfi1_user_sdma_process_request( - fd, (struct iovec *)(from->iov + done), + fd, (struct iovec *)(iov + done), dim, &count); if (ret) { reqs = ret; |