[PATCH v3 3/8] dma-contiguous: Expose rmem_cma_ops

[Vincent Donnefort <vdonnefort@google.com>]

Expose rmem_cma_ops via a kernel/dma-private header so the upcoming
lendable-dma-pool reserved-memory handler can wrap the CMA callbacks
instead of duplicating them.

Signed-off-by: Vincent Donnefort <vdonnefort@google.com>
---
 kernel/dma/contiguous.c |  4 +++-
 kernel/dma/contiguous.h | 10 ++++++++++
 2 files changed, 13 insertions(+), 1 deletion(-)
 create mode 100644 kernel/dma/contiguous.h

diff --git a/kernel/dma/contiguous.c b/kernel/dma/contiguous.c
index 90937dc7c627..22d6e54aea35 100644
--- a/kernel/dma/contiguous.c
+++ b/kernel/dma/contiguous.c
@@ -46,6 +46,8 @@
 #include <linux/cma.h>
 #include <linux/nospec.h>
 
+#include "contiguous.h"
+
 #ifdef CONFIG_CMA_SIZE_MBYTES
 #define CMA_SIZE_MBYTES CONFIG_CMA_SIZE_MBYTES
 #else
@@ -578,7 +580,7 @@ static int __init rmem_cma_setup(unsigned long node, struct reserved_mem *rmem)
 	return 0;
 }
 
-static const struct reserved_mem_ops rmem_cma_ops = {
+const struct reserved_mem_ops rmem_cma_ops = {
 	.node_validate  = rmem_cma_validate,
 	.node_fixup	= rmem_cma_fixup,
 	.node_init	= rmem_cma_setup,
diff --git a/kernel/dma/contiguous.h b/kernel/dma/contiguous.h
new file mode 100644
index 000000000000..9b1fdbfc794f
--- /dev/null
+++ b/kernel/dma/contiguous.h
@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _KERNEL_DMA_CONTIGUOUS_H
+#define _KERNEL_DMA_CONTIGUOUS_H
+
+#ifdef CONFIG_OF_RESERVED_MEM
+struct reserved_mem_ops;
+extern const struct reserved_mem_ops rmem_cma_ops;
+#endif
+
+#endif /* _KERNEL_DMA_CONTIGUOUS_H */
-- 
2.56.0.542.g3ef89b7020-goog