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-rw-r--r--drivers/infiniband/core/ucma.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c
index ca4cf3a..195f973 100644
--- a/drivers/infiniband/core/ucma.c
+++ b/drivers/infiniband/core/ucma.c
@@ -38,6 +38,7 @@
#include <linux/in.h>
#include <linux/in6.h>
#include <linux/miscdevice.h>
+#include <linux/smp_lock.h>
#include <rdma/rdma_user_cm.h>
#include <rdma/ib_marshall.h>
@@ -1156,6 +1157,7 @@ static int ucma_open(struct inode *inode, struct file *filp)
if (!file)
return -ENOMEM;
+ lock_kernel();
INIT_LIST_HEAD(&file->event_list);
INIT_LIST_HEAD(&file->ctx_list);
init_waitqueue_head(&file->poll_wait);
@@ -1163,6 +1165,7 @@ static int ucma_open(struct inode *inode, struct file *filp)
filp->private_data = file;
file->filp = filp;
+ unlock_kernel();
return 0;
}