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dma-mapping: improve selection of dma_declare_coherent availability

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This API is primarily used through DT entries, but two architectures
and two drivers call it directly.  So instead of selecting the config
symbol for random architectures pull it in implicitly for the actual
users.  Also rename the Kconfig option to describe the feature better.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Paul Burton <paul.burton@mips.com> # MIPS
Acked-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Christoph Hellwig 2019-02-03 20:12:02 +01:00
parent be4311a262
commit ff4c25f26a
15 changed files with 13 additions and 17 deletions
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include/linux/device.h
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@ -1017,7 +1017,7 @@ struct device {
struct list_head dma_pools; /* dma pools (if dma'ble) */
#ifdef CONFIG_HAVE_GENERIC_DMA_COHERENT
#ifdef CONFIG_DMA_DECLARE_COHERENT
struct dma_coherent_mem *dma_mem; /* internal for coherent mem
override */
#endif