diff options
| author | Felix Fietkau <nbd@openwrt.org> | 2013-09-27 16:41:44 +0400 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2014-01-22 23:43:10 +0400 |
| commit | 885014bcf284cdfbe3428f2cfa3882edde5ff5fa (patch) | |
| tree | cb0eeee346b51eb7af6c8cf8c49a046bb937f296 /arch/mips/include/asm/dma-coherence.h | |
| parent | 5792bf6438658cb129c3022aa2cf7e9b19b5de3a (diff) | |
| download | linux-885014bcf284cdfbe3428f2cfa3882edde5ff5fa.tar.xz | |
MIPS: improve checks for noncoherent DMA
Only one MIPS development board actually supports enabling/disabling DMA
coherency at runtime, so it's not a good idea to push the overhead of
checking that configuration setting onto every other supported target as
well.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5912/
Diffstat (limited to 'arch/mips/include/asm/dma-coherence.h')
| -rw-r--r-- | arch/mips/include/asm/dma-coherence.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/mips/include/asm/dma-coherence.h b/arch/mips/include/asm/dma-coherence.h index 242cbb3ca582..bc5e85d579e6 100644 --- a/arch/mips/include/asm/dma-coherence.h +++ b/arch/mips/include/asm/dma-coherence.h @@ -9,7 +9,16 @@ #ifndef __ASM_DMA_COHERENCE_H #define __ASM_DMA_COHERENCE_H +#ifdef CONFIG_DMA_MAYBE_COHERENT extern int coherentio; extern int hw_coherentio; +#else +#ifdef CONFIG_DMA_COHERENT +#define coherentio 1 +#else +#define coherentio 0 +#endif +#define hw_coherentio 0 +#endif /* CONFIG_DMA_MAYBE_COHERENT */ #endif |