From 597fe310f16d8246eec856326aa497bfa1b5bfa3 Mon Sep 17 00:00:00 2001
From: Shinya Kuribayashi <shinya.kuribayashi@necel.com>
Date: Fri, 6 Nov 2009 21:51:36 +0900
Subject: [PATCH] i2c-designware: Skip RX_FULL and TX_EMPTY bits on tx abort
 errors

Suppose TX_ABRT occurs in the middle of processing i2c_msg msgs[], and
a STOP condition has already been generated on the bus.  In this case,
subsequent i2c_dw_xfer_msg() might initiate a new and unnecessary I2C
transaction, which we'd have to avoid.

Furthermore, anytime TX_ABRT is set, the contents of tx/rx buffers are
flushed, so we don't have to process RX_FULL and TX_EMPTY.

Disable interrupts, and skip them.

Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi@necel.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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