[PATCH 1/4] mmc: mmci: Bugfix in pio read for small packets

[Russell King - ARM Linux]

On Mon, Oct 10, 2011 at 10:23:02AM +0200, Ulf Hansson wrote:
> Linus Walleij wrote:
>> On Sat, Oct 8, 2011 at 11:10 AM, Russell King - ARM Linux
>> <linux at arm.linux.org.uk> wrote:
>>> On Fri, Oct 07, 2011 at 03:45:48PM +0200, Ulf Hansson wrote:
>>>
>>> Well, the patch system says that each one depends on the previous one,
>>> and the first one in the series contains the PIO read thing.
>>>
>>> Do 7108/1 onwards depend on 7106/1 and 7107/1 ?
>>
>> Probably my fault, since I was helping Ulf out with the patch tracker
>> introduction.
>>
>> The patches should be pretty much semantically orthogonal as
>> far as I can tell, the only reason dependency was stated that way
>> was that I couldn't tell from head-parsing whether there were
>> syntactical dependencies. (And wanted to avoid the annoyance
>> of non-applying patches...)
>>
>> So if they apply, they are independent AFAICT.
>
> 7108/1 and 7109/1, have real dependencies. Otherwise there none.

Ok, I assume that those depend on the first two patches.

So, I tried applying 7110/1 .. 7112/1 but the first rejects because it
doesn't have the non-power-of-2 support patch applied (7107/1).  And
it seems sensible that 7107/1 depends on 7106/1 (the PIO patch) which
I believe to be a problem.

Therefore, I don't think any of these can be applied without the
initial PIO patch.

One thing I haven't yet mentioned is about the non-power-of-2 support -
surely this can only be supported if blksz_datactrl16 is set?  If so,
shouldn't it key off that?  I don't see how it could otherwise support
non-power of 2 block sizes with just a log2 of the block size programmed
into the data control register.