On 13/03/17 20:54, Lars-Peter Clausen wrote: > On 03/13/2017 09:51 PM, Jonathan Cameron wrote: > [...] >>>> Gargi, >>>> >>>> Please insert the new lock above the __cacheline_aligned struct >>>> member. >>> >>> I will do that, but is there any reason why the lock should be above >>> ____cacheline_aligned struct member? >> Yes. It's in fact very important that nothing comes after that. >> >> Will leave the why as an exercise for the reader. I'll give the >> hit of spi drivers that do DMA... > > > One hint though, the answer is somewhere in Documentation/DMA-API.txt Took me a while to come across this one when I first started writing SPI drivers ;) > > -- > To unsubscribe from this list: send the line "unsubscribe linux-iio" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
