ia64: only select ARCH_HAS_DMA_COHERENT_TO_PFN if swiotlb is enabled

Otherwise we get a build failure due in swiotlb-less configs with
non-generic kernels.

Signed-off-by: Christoph Hellwig <hch@lst.de>

diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index c587e33..cbf6c67 100644 (file)
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -28,7 +28,7 @@ config IA64
        select HAVE_ARCH_TRACEHOOK
        select HAVE_MEMBLOCK_NODE_MAP
        select HAVE_VIRT_CPU_ACCOUNTING
-       select ARCH_HAS_DMA_COHERENT_TO_PFN
+       select ARCH_HAS_DMA_COHERENT_TO_PFN if SWIOTLB
        select ARCH_HAS_SYNC_DMA_FOR_CPU
        select VIRT_TO_BUS
        select ARCH_DISCARD_MEMBLOCK