Signed-off-by: Stefano Stabellini <[email protected]>
CC: [email protected]
CC: [email protected]
---
arch/arm64/mm/dma-mapping.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c
index 4bd7579..a006e84 100644
--- a/arch/arm64/mm/dma-mapping.c
+++ b/arch/arm64/mm/dma-mapping.c
@@ -63,6 +63,8 @@ static struct dma_map_ops arm64_swiotlb_dma_ops = {
void __init arm64_swiotlb_init(void)
{
+ if (dma_ops != NULL)
+ return;
dma_ops = &arm64_swiotlb_dma_ops;
swiotlb_init(1);
}
--
1.7.2.5
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