diff mbox series

[V2,4/8] RDMA/rtrs-clt: Correct the checking of ib_map_mr_sg

Message ID 20221117101945.6317-5-guoqing.jiang@linux.dev (mailing list archive)
State Accepted
Headers show
Series Misc patches for rtrs | expand

Commit Message

Guoqing Jiang Nov. 17, 2022, 10:19 a.m. UTC 
We should check with count, also the only successful case is that
all sg elements are mapped, so make it explicitly.

Acked-by: Jack Wang <jinpu.wang@ionos.com>
Signed-off-by: Guoqing Jiang <guoqing.jiang@linux.dev>
---
 drivers/infiniband/ulp/rtrs/rtrs-clt.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/drivers/infiniband/ulp/rtrs/rtrs-clt.c b/drivers/infiniband/ulp/rtrs/rtrs-clt.c
index 8546b8816524..be7c8480f947 100644
--- a/drivers/infiniband/ulp/rtrs/rtrs-clt.c
+++ b/drivers/infiniband/ulp/rtrs/rtrs-clt.c
@@ -1064,10 +1064,8 @@  static int rtrs_map_sg_fr(struct rtrs_clt_io_req *req, size_t count)
 
 	/* Align the MR to a 4K page size to match the block virt boundary */
 	nr = ib_map_mr_sg(req->mr, req->sglist, count, NULL, SZ_4K);
-	if (nr < 0)
-		return nr;
-	if (nr < req->sg_cnt)
-		return -EINVAL;
+	if (nr != count)
+		return nr < 0 ? nr : -EINVAL;
 	ib_update_fast_reg_key(req->mr, ib_inc_rkey(req->mr->rkey));
 
 	return nr;