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dma-mapping: remove dma_release_declared_memory

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This function is entirely unused given that declared memory is
generally provided by platform setup code.

Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Christoph Hellwig
2019-08-30 08:46:57 +02:00
parent 212836a992
commit 1fa0682448
3 changed files with 0 additions and 28 deletions
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6
include/linux/dma-mapping.h
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@@ -764,7 +764,6 @@ static inline int dma_get_cache_alignment(void)
#ifdef CONFIG_DMA_DECLARE_COHERENT
int dma_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr,
dma_addr_t device_addr, size_t size);
void dma_release_declared_memory(struct device *dev);
#else
static inline int
dma_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr,
@@ -772,11 +771,6 @@ dma_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr,
{
return -ENOSYS;
}
static inline void
dma_release_declared_memory(struct device *dev)
{
}
#endif /* CONFIG_DMA_DECLARE_COHERENT */
static inline void *dmam_alloc_coherent(struct device *dev, size_t size,