[PATCH v2 RFC 3/8] arm64: do not initialize arm64_swiotlb if dma_ops is already set
From: Stefano Stabellini <hidden>
Date: 2013-07-31 19:56:11
Also in:
lkml, xen-devel
Subsystem:
arm64 port (aarch64 architecture), the rest · Maintainers:
Catalin Marinas, Will Deacon, Linus Torvalds
Signed-off-by: Stefano Stabellini <redacted> CC: catalin.marinas at arm.com CC: will.deacon at arm.com --- 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