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-rw-r--r--arch/powerpc/include/asm/swiotlb.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/swiotlb.h b/arch/powerpc/include/asm/swiotlb.h
index 8979d4cd3d70..de99d6e29430 100644
--- a/arch/powerpc/include/asm/swiotlb.h
+++ b/arch/powerpc/include/asm/swiotlb.h
@@ -22,4 +22,10 @@ int __init swiotlb_setup_bus_notifier(void);
extern void pci_dma_dev_setup_swiotlb(struct pci_dev *pdev);
+#ifdef CONFIG_SWIOTLB
+void swiotlb_detect_4g(void);
+#else
+static inline void swiotlb_detect_4g(void) {}
+#endif
+
#endif /* __ASM_SWIOTLB_H */
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