i2c: mv64xxx: refactor message start to ensure proper initialization
authorWolfram Sang <wsa@the-dreams.de>
Thu, 13 Feb 2014 20:36:29 +0000 (21:36 +0100)
committerWolfram Sang <wsa@the-dreams.de>
Sat, 15 Feb 2014 14:42:31 +0000 (15:42 +0100)
commit79970db213344b4a4034645db5ebfc31571f3fa3
tree309b4ca8949adaeb4f31e5cfabbc51a30a772c04
parentb28a960c42fcd9cfc987441fa6d1c1a471f0f9ed
i2c: mv64xxx: refactor message start to ensure proper initialization

Because the offload mechanism can fall back to a standard transfer,
having two seperate initialization states is unfortunate. Let's just
have one state which does things consistently. This fixes a bug where
some preparation was missing when the fallback happened. And it makes
the code much easier to follow. To implement this, we put the check
if offload is possible at the top of the offload setup function.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Cc: stable@vger.kernel.org # v3.12+
Fixes: 930ab3d403ae (i2c: mv64xxx: Add I2C Transaction Generator support)
drivers/i2c/busses/i2c-mv64xxx.c