diff options
| author |   Christoph Hellwig <hch@lst.de> | 2018-08-16 16:47:53 +0300 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2018-09-20 09:01:14 +0200 |
| commit | 5748e1b35ba28368515d850e8087929a3a65e055 (patch) | |
| tree | ef6a0559e014c9ab5653a10c2a902b7c2cf28e3f | |
| parent | dma-mapping: add the missing ARCH_HAS_SYNC_DMA_FOR_CPU_ALL declaration (diff) | |
| download | linux-dev-5748e1b35ba28368515d850e8087929a3a65e055.tar.xz linux-dev-5748e1b35ba28368515d850e8087929a3a65e055.zip | |
MIPS: don't select DMA_MAYBE_COHERENT from DMA_PERDEV_COHERENT
While both option select a form of conditional dma coherence they don't
actually share any code in the implementation, so untangle them.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Paul Burton <paul.burton@mips.com>
| -rw-r--r-- | arch/mips/Kconfig | 2 | ||||
| -rw-r--r-- | arch/mips/kernel/setup.c | 2 | ||||
| -rw-r--r-- | arch/mips/mm/c-r4k.c | 17 |
3 files changed, 10 insertions, 11 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 35511999156a..0b25180028b8 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -1111,7 +1111,7 @@ config DMA_MAYBE_COHERENT config DMA_PERDEV_COHERENT bool - select DMA_MAYBE_COHERENT + select DMA_NONCOHERENT config DMA_NONCOHERENT bool diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c index c71d1eb7da59..6d840a44fa36 100644 --- a/arch/mips/kernel/setup.c +++ b/arch/mips/kernel/setup.c @@ -1067,7 +1067,7 @@ static int __init debugfs_mips(void) arch_initcall(debugfs_mips); #endif -#if defined(CONFIG_DMA_MAYBE_COHERENT) && !defined(CONFIG_DMA_PERDEV_COHERENT) +#ifdef CONFIG_DMA_MAYBE_COHERENT /* User defined DMA coherency from command line. */ enum coherent_io_user_state coherentio = IO_COHERENCE_DEFAULT; EXPORT_SYMBOL_GPL(coherentio); diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c index a9ef057c79fe..05bd77727fb9 100644 --- a/arch/mips/mm/c-r4k.c +++ b/arch/mips/mm/c-r4k.c @@ -1955,22 +1955,21 @@ void r4k_cache_init(void) __flush_icache_user_range = r4k_flush_icache_user_range; __local_flush_icache_user_range = local_r4k_flush_icache_user_range; -#if defined(CONFIG_DMA_NONCOHERENT) || defined(CONFIG_DMA_MAYBE_COHERENT) -# if defined(CONFIG_DMA_PERDEV_COHERENT) - if (0) { -# else - if ((coherentio == IO_COHERENCE_ENABLED) || - ((coherentio == IO_COHERENCE_DEFAULT) && hw_coherentio)) { -# endif +#ifdef CONFIG_DMA_NONCOHERENT +#ifdef CONFIG_DMA_MAYBE_COHERENT + if (coherentio == IO_COHERENCE_ENABLED || + (coherentio == IO_COHERENCE_DEFAULT && hw_coherentio)) { _dma_cache_wback_inv = (void *)cache_noop; _dma_cache_wback = (void *)cache_noop; _dma_cache_inv = (void *)cache_noop; - } else { + } else +#endif /* CONFIG_DMA_MAYBE_COHERENT */ + { _dma_cache_wback_inv = r4k_dma_cache_wback_inv; _dma_cache_wback = r4k_dma_cache_wback_inv; _dma_cache_inv = r4k_dma_cache_inv; } -#endif +#endif /* CONFIG_DMA_NONCOHERENT */ build_clear_page(); build_copy_page(); |