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-rw-r--r--include/linux/dma-direct.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/dma-direct.h b/include/linux/dma-direct.h
index 99b77dd5f79b..452f5280cde3 100644
--- a/include/linux/dma-direct.h
+++ b/include/linux/dma-direct.h
@@ -6,6 +6,8 @@
#include <linux/memblock.h> /* for min_low_pfn */
#include <linux/mem_encrypt.h>
+extern unsigned int zone_dma_bits;
+
#ifdef CONFIG_ARCH_HAS_PHYS_TO_DMA
#include <asm/dma-direct.h>
#else