staging: lustre: lnet: o2iblnd: use swap() in kiblnd_dev_failover()

Use kernel.h macro definition.

Thanks to Julia Lawall for Coccinelle scripting support.

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c
index 060b739..2a72427 100644 (file)
--- a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c
+++ b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c
@@ -2463,7 +2463,6 @@ int kiblnd_dev_failover(kib_dev_t *dev)
        LIST_HEAD(zombie_fpo);
        struct rdma_cm_id *cmid  = NULL;
        kib_hca_dev_t *hdev  = NULL;
-       kib_hca_dev_t *old;
        struct ib_pd *pd;
        kib_net_t *net;
        struct sockaddr_in addr;
@@ -2555,9 +2554,7 @@ int kiblnd_dev_failover(kib_dev_t *dev)
 
        write_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
 
-       old = dev->ibd_hdev;
-       dev->ibd_hdev = hdev; /* take over the refcount */
-       hdev = old;
+       swap(dev->ibd_hdev, hdev); /* take over the refcount */
 
        list_for_each_entry(net, &dev->ibd_nets, ibn_list) {
                cfs_cpt_for_each(i, lnet_cpt_table()) {