Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull rdma fixes from Doug Ledford:
 "Here's our second -rc pull request. Nothing particularly special in
  this one. The client removal deadlock fix is kindy tricky, but we had
  multiple eyes on it and no one could find a fault in it. A couple
  Spectre V1 fixes too. Otherwise, all just normal -rc fodder:

   - A couple Spectre V1 fixes (umad, hfi1)

   - Fix a tricky deadlock in the rdma core code with refcounting
     instead of locks (client removal patches)

   - Build errors (hns)

   - Fix a scheduling while atomic issue (mlx5)

   - Use after free fix (mad)

   - Fix error path return code (hns)

   - Null deref fix (siw_crypto_hash)

   - A few other misc. minor fixes"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
  RDMA/hns: Fix error return code in hns_roce_v1_rsv_lp_qp()
  RDMA/mlx5: Release locks during notifier unregister
  IB/hfi1: Fix Spectre v1 vulnerability
  IB/mad: Fix use-after-free in ib mad completion handling
  RDMA/restrack: Track driver QP types in resource tracker
  IB/mlx5: Fix MR registration flow to use UMR properly
  RDMA/devices: Remove the lock around remove_client_context
  RDMA/devices: Do not deadlock during client removal
  IB/core: Add mitigation for Spectre V1
  Do not dereference 'siw_crypto_shash' before checking
  RDMA/qedr: Fix the hca_type and hca_rev returned in device attributes
  RDMA/hns: Fix build error

1 files changed, 3 insertions, 1 deletions

diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index c5f8a9f17063..4f225175cb91 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -2647,7 +2647,9 @@ struct ib_client {
 			const union ib_gid *gid,
 			const struct sockaddr *addr,
 			void *client_data);
-	struct list_head list;
+
+	refcount_t uses;
+	struct completion uses_zero;
 	u32 client_id;
 
 	/* kverbs are not required by the client */