[PATCH 4/9] dma-contiguous: remove dma_contiguous_set_default

Christoph Hellwig
2020-09-30T08:56:35Z

dma_contiguous_set_default contains a trivial assignment, and has a
single caller that is compiled if CONFIG_CMA_DMA is enabled.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
include/linux/dma-contiguous.h | 7 -------
kernel/dma/contiguous.c | 2 +-
2 files changed, 1 insertion(+), 8 deletions(-)

diff --git a/include/linux/dma-contiguous.h b/include/linux/dma-contiguous.h
index 41ec08d81bc317..f9ce1ee58d4180 100644
--- a/include/linux/dma-contiguous.h
+++ b/include/linux/dma-contiguous.h
@@ -66,11 +66,6 @@ static inline struct cma *dev_get_cma_area(struct device *dev)
return dma_contiguous_default_area;
}

-static inline void dma_contiguous_set_default(struct cma *cma)
-{
- dma_contiguous_default_area = cma;
-}
-
void dma_contiguous_reserve(phys_addr_t addr_limit);

int __init dma_contiguous_reserve_area(phys_addr_t size, phys_addr_t base,
@@ -91,8 +86,6 @@ static inline struct cma *dev_get_cma_area(struct device *dev)
return NULL;
}

-static inline void dma_contiguous_set_default(struct cma *cma) { }
-
static inline void dma_contiguous_reserve(phys_addr_t limit) { }

static inline int dma_contiguous_reserve_area(phys_addr_t size, phys_addr_t base,
diff --git a/kernel/dma/contiguous.c b/kernel/dma/contiguous.c
index 95adcee972e85c..bf05ec2256e149 100644
--- a/kernel/dma/contiguous.c
+++ b/kernel/dma/contiguous.c
@@ -407,7 +407,7 @@ static int __init rmem_cma_setup(struct reserved_mem *rmem)
dma_contiguous_early_fixup(rmem->base, rmem->size);

if (default_cma)
- dma_contiguous_set_default(cma);
+ dma_contiguous_default_area = cma;

rmem->ops = &rmem_cma_ops;
rmem->priv = cma;
--
2.28.0