IB/hfi1: Make iovec loop index easy to understand

Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Dean Luick <dean.luick@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/infiniband/hw/hfi1/user_sdma.c b/drivers/infiniband/hw/hfi1/user_sdma.c
index 54640c3..586f078 100644 (file)
--- a/drivers/infiniband/hw/hfi1/user_sdma.c
+++ b/drivers/infiniband/hw/hfi1/user_sdma.c
@@ -520,7 +520,7 @@ static u8 dlid_to_selector(u16 dlid)
 int hfi1_user_sdma_process_request(struct file *fp, struct iovec *iovec,
                                   unsigned long dim, unsigned long *count)
 {
-       int ret = 0, i = 0;
+       int ret = 0, i;
        struct hfi1_filedata *fd = fp->private_data;
        struct hfi1_ctxtdata *uctxt = fd->uctxt;
        struct hfi1_user_sdma_pkt_q *pq = fd->pq;
@@ -657,7 +657,7 @@ int hfi1_user_sdma_process_request(struct file *fp, struct iovec *iovec,
        idx++;
 
        /* Save all the IO vector structures */
-       while (i < req->data_iovs) {
+       for (i = 0; i < req->data_iovs; i++) {
                INIT_LIST_HEAD(&req->iovs[i].list);
                memcpy(&req->iovs[i].iov, iovec + idx++, sizeof(struct iovec));
                ret = pin_vector_pages(req, &req->iovs[i]);
@@ -665,7 +665,7 @@ int hfi1_user_sdma_process_request(struct file *fp, struct iovec *iovec,
                        req->status = ret;
                        goto free_req;
                }
-               req->data_len += req->iovs[i++].iov.iov_len;
+               req->data_len += req->iovs[i].iov.iov_len;
        }
        SDMA_DBG(req, "total data length %u", req->data_len);