infiniband-ucma: BKL pushdown

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c
index ca4cf3a..195f973 100644 (file)
--- 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;
 }