27 Jun
2011
27 Jun
'11
10:34 a.m.
+static inline void __dma_sync(void) +{
- dsb();
+}
/* * Return whether the given device DMA address mask can be supported * properly. For example, if your device can only drive the low 24-bits @@ -378,6 +383,7 @@ static inline dma_addr_t dma_map_single(struct device *dev, void *cpu_addr, BUG_ON(!valid_dma_direction(dir));
addr = __dma_map_single(dev, cpu_addr, size, dir);
- __dma_sync();
Russell, I'm curious about the correctness of this patch for systems with outer cache. shouldn't the dsb be issued before the outer cache maintenance? saeed