diff --git a/kernel/dma/contiguous.c b/kernel/dma/contiguous.c
index b2a87905846d..e8c214d14808 100644
--- a/kernel/dma/contiguous.c
+++ b/kernel/dma/contiguous.c
@@ -31,6 +31,7 @@
 #endif
 
 struct cma *dma_contiguous_default_area;
+EXPORT_SYMBOL(dma_contiguous_default_area);
 
 /*
  * Default global CMA area size can be defined in kernel's .config.
diff --git a/mm/cma.c b/mm/cma.c
index 9516e7694d91..e2b95d4fdebc 100644
--- a/mm/cma.c
+++ b/mm/cma.c
@@ -48,11 +48,13 @@ phys_addr_t cma_get_base(const struct cma *cma)
 {
 	return PFN_PHYS(cma->base_pfn);
 }
+EXPORT_SYMBOL(cma_get_base);
 
 unsigned long cma_get_size(const struct cma *cma)
 {
 	return cma->count << PAGE_SHIFT;
 }
+EXPORT_SYMBOL(cma_get_size);
 
 const char *cma_get_name(const struct cma *cma)
 {