[PATCH v4 4/8] dma: contiguous: Export dev_get_cma_area()

Maxime Ripard
2026-03-31T10:00:33Z

The CMA dma-buf heap uses the dev_get_cma_area() function to retrieve
the default contiguous area.

Now that this function is no longer inlined, and since we want to turn
the CMA heap into a module, let's export it.

Signed-off-by: Maxime Ripard <mripard@kernel.org>
---
kernel/dma/contiguous.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/kernel/dma/contiguous.c b/kernel/dma/contiguous.c
index fd8d3518a2323f0a631fb185ef92a24c35f8d25d..83a5bd9488e1448cc72e92ed204ce804164cc6b8 100644
--- a/kernel/dma/contiguous.c
+++ b/kernel/dma/contiguous.c
@@ -136,10 +136,11 @@ struct cma *dev_get_cma_area(struct device *dev)
if (dev && dev->cma_area)
return dev->cma_area;

return dma_contiguous_default_area;
}
+EXPORT_SYMBOL_GPL(dev_get_cma_area);

#ifdef CONFIG_DMA_NUMA_CMA

static struct cma *dma_contiguous_numa_area[MAX_NUMNODES];
static phys_addr_t numa_cma_size[MAX_NUMNODES] __initdata;

--
2.53.0