[SPARC]: Initialize iounit spinlock in iounit_init().

Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/arch/sparc/mm/io-unit.c b/arch/sparc/mm/io-unit.c
index 42c1c70..2bb1309 100644 (file)
--- a/arch/sparc/mm/io-unit.c
+++ b/arch/sparc/mm/io-unit.c
@@ -64,6 +64,7 @@ iounit_init(int sbi_node, int io_node, struct sbus_bus *sbus)
        
        sbus->iommu = (struct iommu_struct *)iounit;
        iounit->page_table = xpt;
+       spin_lock_init(&iounit->lock);
        
        for (xptend = iounit->page_table + (16 * PAGE_SIZE) / sizeof(iopte_t);
             xpt < xptend;)