From: Pierre Ossman <drzeus@drzeus.cx>
Date: Sat, 28 Jun 2008 10:52:45 +0000 (+0200)
Subject: mmc,sdio: helper function for transfer padding
X-Git-Tag: v2.6.27-rc1~1047^2~34
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ad3868b2ec96ec14a1549c9e33f5f9a2a3c6ab15;p=pandora-kernel.git

mmc,sdio: helper function for transfer padding

There are a lot of crappy controllers out there that cannot handle
all the request sizes that the MMC/SD/SDIO specifications require.
In case the card driver can pad the data to overcome the problems,
this commit adds a helper that calculates how much that padding
should be.

A corresponding helper is also added for SDIO, but it can also deal
with all the complexities of splitting up a large transfer efficiently.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
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