On Sat, 27 Oct 2012, Santosh Shilimkar wrote: > Another alternative, which I will recommend to just make use of the > read*/wrire* instead __raw versions. The barriers are taken care > already and driver point of view, it is transparent. Those barriers will disappear if CONFIG_ARM_DMA_MEM_BUFFERABLE is set to N, so that's probably not the right thing to do in this case. The barrier here isn't DMA-related, it's needed due to the design of the driver. In fact the wmb() is probably overkill, since only a compiler reordering barrier is needed. It can probably just be barrier(). - Paul -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
