diff mbox series

[rdma-next,v4,2/3] RDMA/core: Check for verbs callbacks before using them

Message ID 20180727182306.26664-3-kamalheib1@gmail.com (mailing list archive)
State Accepted
Delegated to: Jason Gunthorpe
Headers show
Series RDMA: handle pointless functions | expand

Commit Message

Kamal Heib July 27, 2018, 6:23 p.m. UTC 
Make sure the providers implement the verbs callbacks before calling
them, otherwise return -EOPNOTSUPP.

Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
---
 drivers/infiniband/core/uverbs_cmd.c | 3 ++-
 drivers/infiniband/core/verbs.c      | 3 +++
 2 files changed, 5 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index 38d7de3f9b2f..a2cfa7908d7e 100644
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -2501,7 +2501,8 @@  ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file,
 		goto out;
 
 	resp.bad_wr = 0;
-	ret = srq->device->post_srq_recv(srq, wr, &bad_wr);
+	ret = srq->device->post_srq_recv ?
+		srq->device->post_srq_recv(srq, wr, &bad_wr) : -EOPNOTSUPP;
 
 	uobj_put_obj_read(srq);
 
diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index cde359d48d34..5b76c7ebfa02 100644
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -479,6 +479,9 @@  static struct ib_ah *_rdma_create_ah(struct ib_pd *pd,
 {
 	struct ib_ah *ah;
 
+	if (!pd->device->create_ah)
+		return ERR_PTR(-EOPNOTSUPP);
+
 	ah = pd->device->create_ah(pd, ah_attr, udata);
 
 	if (!IS_ERR(ah)) {