IB/ipath: Add locking for interrupt use of ipath_pd contexts vs free
Fixes timing race resulting in panic. Not a performance sensitive path.
Signed-off-by: Dave Olson <dave.olson@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
diff --git a/drivers/infiniband/hw/ipath/ipath_kernel.h b/drivers/infiniband/hw/ipath/ipath_kernel.h
index aa84153..6ba4861 100644
--- a/drivers/infiniband/hw/ipath/ipath_kernel.h
+++ b/drivers/infiniband/hw/ipath/ipath_kernel.h
@@ -477,6 +477,8 @@
spinlock_t ipath_kernel_tid_lock;
spinlock_t ipath_user_tid_lock;
spinlock_t ipath_sendctrl_lock;
+ /* around ipath_pd and (user ports) port_cnt use (intr vs free) */
+ spinlock_t ipath_uctxt_lock;
/*
* IPATH_STATUS_*,