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-rw-r--r--arch/powerpc/kernel/iommu.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
index c862fd716fe..31c4fdc6859 100644
--- a/arch/powerpc/kernel/iommu.c
+++ b/arch/powerpc/kernel/iommu.c
@@ -717,6 +717,13 @@ void iommu_free_table(struct iommu_table *tbl, const char *node_name)
return;
}
+ /*
+ * In case we have reserved the first bit, we should not emit
+ * the warning below.
+ */
+ if (tbl->it_offset == 0)
+ clear_bit(0, tbl->it_map);
+
/* verify that table contains no entries */
if (!bitmap_empty(tbl->it_map, tbl->it_size))
pr_warn("%s: Unexpected TCEs for %s\n", __func__, node_name);