[PATCH -next] powerpc/powernv/ioda: using kfree_rcu() to simplify the code

[YueHaibing]

The callback function of call_rcu() just calls a kfree(), so we
can use kfree_rcu() instead of call_rcu() + callback function.

Signed-off-by: YueHaibing <yuehaib...@huawei.com>
---
 arch/powerpc/platforms/powernv/pci-ioda-tce.c | 10 +---------
 1 file changed, 1 insertion(+), 9 deletions(-)

diff --git a/arch/powerpc/platforms/powernv/pci-ioda-tce.c 
b/arch/powerpc/platforms/powernv/pci-ioda-tce.c
index e28f03e..05f80b1 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda-tce.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda-tce.c
@@ -332,14 +332,6 @@ long pnv_pci_ioda2_table_alloc_pages(int nid, __u64 
bus_offset,
        return -ENOMEM;
 }
 
-static void pnv_iommu_table_group_link_free(struct rcu_head *head)
-{
-       struct iommu_table_group_link *tgl = container_of(head,
-                       struct iommu_table_group_link, rcu);
-
-       kfree(tgl);
-}
-
 void pnv_pci_unlink_table_and_group(struct iommu_table *tbl,
                struct iommu_table_group *table_group)
 {
@@ -355,7 +347,7 @@ void pnv_pci_unlink_table_and_group(struct iommu_table *tbl,
        list_for_each_entry_rcu(tgl, &tbl->it_group_list, next) {
                if (tgl->table_group == table_group) {
                        list_del_rcu(&tgl->next);
-                       call_rcu(&tgl->rcu, pnv_iommu_table_group_link_free);
+                       kfree_rcu(tgl, rcu);
                        found = true;
                        break;
                }
-- 
2.7.4