diff options
| author | Felix Fietkau <nbd@openwrt.org> | 2013-09-27 14:41:44 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2014-01-22 20:43:10 +0100 |
| commit | 885014bcf284cdfbe3428f2cfa3882edde5ff5fa (patch) | |
| tree | cb0eeee346b51eb7af6c8cf8c49a046bb937f296 /arch/mips/mm | |
| parent | 5792bf6438658cb129c3022aa2cf7e9b19b5de3a (diff) | |
| download | linux-885014bcf284cdfbe3428f2cfa3882edde5ff5fa.tar.bz2 | |
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/mm')
| -rw-r--r-- | arch/mips/mm/dma-default.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/mips/mm/dma-default.c b/arch/mips/mm/dma-default.c index 2e9418562258..44b6dff5aba2 100644 --- a/arch/mips/mm/dma-default.c +++ b/arch/mips/mm/dma-default.c @@ -23,6 +23,7 @@ #include <dma-coherence.h> +#ifdef CONFIG_DMA_MAYBE_COHERENT int coherentio = 0; /* User defined DMA coherency from command line. */ EXPORT_SYMBOL_GPL(coherentio); int hw_coherentio = 0; /* Actual hardware supported DMA coherency setting. */ @@ -42,6 +43,7 @@ static int __init setnocoherentio(char *str) return 0; } early_param("nocoherentio", setnocoherentio); +#endif static inline struct page *dma_addr_to_page(struct device *dev, dma_addr_t dma_addr) |