[PATCH] xhci: create one unified function to calculate TRB TD remainder.

[Mathias Nyman]

On 08.09.2015 14:46, Oliver Neukum wrote:
> On Tue, 2015-09-08 at 14:09 +0300, Mathias Nyman wrote:
>> Now Mediatek host has an additional quirk on how it uses the TD Size
>> field for remaining data. To prevent yet another function for
>> calculating
>> remainder we instead want to make one quirk friendly unified function.
>
> Could you clarify whether this replaces an existing quirk
> or renders unnecessary the introduction of a new quirk,
> because that decides whether this patch must go into stable.
>

Neither :)

This patch will simplify the quirk Mediatek wants to include in their patchseries.

After this patch the TD size part of the mediatek quirk can be reduced to maybe
a couple lines in total.
Yet another version of the Mediatek patcheries will be needed after this, but it will
be 50 - 100 lines shorter.

This patch is basically just code refactoring, enabling easier quirking.

It seems I need to do some rewording of the commit message of this patch as well

-Mathias