• R
    ARM: add coherent dma ops · dd37e940
    Rob Herring 提交于
    arch_is_coherent is problematic as it is a global symbol. This
    doesn't work for multi-platform kernels or platforms which can support
    per device coherent DMA.
    
    This adds arm_coherent_dma_ops to be used for devices which connected
    coherently (i.e. to the ACP port on Cortex-A9 or A15). The arm_dma_ops
    are modified at boot when arch_is_coherent is true.
    Signed-off-by: NRob Herring <rob.herring@calxeda.com>
    Cc: Russell King <linux@arm.linux.org.uk>
    Cc: Marek Szyprowski <m.szyprowski@samsung.com>
    Signed-off-by: NMarek Szyprowski <m.szyprowski@samsung.com>
    dd37e940
dma-mapping.c 45.0 KB