[PATCH 07/11] fsmc/nand: Provide contiguous buffers to dma

[viresh kumar]

On Thu, Oct 11, 2012 at 9:36 PM, Linus Walleij <linus.walleij at linaro.org> wrote:
> On Thu, Oct 11, 2012 at 6:15 AM, viresh kumar <viresh.kumar at linaro.org> wrote:
>> I pray that i am wrong here, otherwise i would be thrown out from

s/am/am not/ :(

>> the maintainers list for this driver :)
>>
>> dma_sync_single_for_device() is not doing anything on the buffer, but
>> on the LLI item. Actually it is flushing LLI struct so that DMA h/w can get
>> the correct values.
>
> Sorry no, I'm the one who's wrong...

Glad to hear that. :)
It happens very few times in one's lifetime, that a beginner like me is correct
and an expert like you is not. Just kidding :)

> And the block layer of the subsystem should take care
> of only handing the driver buffers that are contiguous

But why should that be a constraint on block layer? It is working in virtual
space and is concerned about that onlly.

--
viresh