[PATCH] powerpc: use <asm-generic/dma-mapping.h>

[Christoph Hellwig]

ping?

On Wed, Aug 07, 2019 at 06:07:52PM +0300, Christoph Hellwig wrote:
> The powerpc version of dma-mapping.h only contains a version of
> get_arch_dma_ops that always return NULL.  Replace it with the
> asm-generic version that does the same.
> 
> Signed-off-by: Christoph Hellwig <hch at lst.de>
> ---
>  arch/powerpc/include/asm/Kbuild        |  1 +
>  arch/powerpc/include/asm/dma-mapping.h | 18 ------------------
>  2 files changed, 1 insertion(+), 18 deletions(-)
>  delete mode 100644 arch/powerpc/include/asm/dma-mapping.h
> 
> diff --git a/arch/powerpc/include/asm/Kbuild b/arch/powerpc/include/asm/Kbuild
> index 9a1d2fc6ceb7..15bb09ad5dc2 100644
> --- a/arch/powerpc/include/asm/Kbuild
> +++ b/arch/powerpc/include/asm/Kbuild
> @@ -4,6 +4,7 @@ generated-y += syscall_table_64.h
>  generated-y += syscall_table_c32.h
>  generated-y += syscall_table_spu.h
>  generic-y += div64.h
> +generic-y += dma-mapping.h
>  generic-y += export.h
>  generic-y += irq_regs.h
>  generic-y += local64.h
> diff --git a/arch/powerpc/include/asm/dma-mapping.h b/arch/powerpc/include/asm/dma-mapping.h
> deleted file mode 100644
> index 565d6f74b189..000000000000
> --- a/arch/powerpc/include/asm/dma-mapping.h
> +++ /dev/null
> @@ -1,18 +0,0 @@
> -/* SPDX-License-Identifier: GPL-2.0 */
> -/*
> - * Copyright (C) 2004 IBM
> - */
> -#ifndef _ASM_DMA_MAPPING_H
> -#define _ASM_DMA_MAPPING_H
> -
> -static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
> -{
> -	/* We don't handle the NULL dev case for ISA for now. We could
> -	 * do it via an out of line call but it is not needed for now. The
> -	 * only ISA DMA device we support is the floppy and we have a hack
> -	 * in the floppy driver directly to get a device for us.
> -	 */
> -	return NULL;
> -}
> -
> -#endif	/* _ASM_DMA_MAPPING_H */
> -- 
> 2.20.1
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