IB/qib: Fix sparse RCU warnings in qib_keys.c
Commit 8aac4cc3a9d7 ("IB/qib: RCU locking for MR validation") introduced
new sparse warnings in qib_keys.c.
Acked-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
diff --git a/drivers/infiniband/hw/qib/qib_keys.c b/drivers/infiniband/hw/qib/qib_keys.c
index 970165b..e9486c74 100644
--- a/drivers/infiniband/hw/qib/qib_keys.c
+++ b/drivers/infiniband/hw/qib/qib_keys.c
@@ -349,7 +349,9 @@
if (pd->user || rkey == 0)
goto bail;
- mr = rkt->table[(rkey >> (32 - ib_qib_lkey_table_size))];
+ mr = rcu_dereference_protected(
+ rkt->table[(rkey >> (32 - ib_qib_lkey_table_size))],
+ lockdep_is_held(&rkt->lock));
if (unlikely(mr == NULL || qp->ibqp.pd != mr->pd))
goto bail;