Ping. Please take a look at this trivial patch.
On Tue, 2019-09-17 at 09:00 -0400, Qian Cai wrote:
> dma_get_device_base() was first introduced in the commit c41f9ea998f3
> ("drivers: dma-coherent: Account dma_pfn_offset when used with device
> tree"). Later, it was removed by the commit 43fc509c3efb ("dma-coherent:
> introduce interface for default DMA pool")
>
> Found by the -Wunused-function compilation warning.
>
> Signed-off-by: Qian Cai <[email protected]>
> ---
> kernel/dma/coherent.c | 9 ---------
> 1 file changed, 9 deletions(-)
>
> diff --git a/kernel/dma/coherent.c b/kernel/dma/coherent.c
> index 29fd6590dc1e..909b38e1c29b 100644
> --- a/kernel/dma/coherent.c
> +++ b/kernel/dma/coherent.c
> @@ -28,15 +28,6 @@ static inline struct dma_coherent_mem
> *dev_get_coherent_memory(struct device *de
> return NULL;
> }
>
> -static inline dma_addr_t dma_get_device_base(struct device *dev,
> - struct dma_coherent_mem * mem)
> -{
> - if (mem->use_dev_dma_pfn_offset)
> - return (mem->pfn_base - dev->dma_pfn_offset) << PAGE_SHIFT;
> - else
> - return mem->device_base;
> -}
> -
> static int dma_init_coherent_memory(phys_addr_t phys_addr,
> dma_addr_t device_addr, size_t size,
> struct dma_coherent_mem **mem)
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