From a25733d6f6968240042ac94dc93c7ae3c9e8d68b Mon Sep 17 00:00:00 2001
From: Sonic Zhang <sonic.zhang@analog.com>
Date: Wed, 13 Jun 2012 16:22:42 +0800
Subject: [PATCH] i2c: i2c-bfin-twi: Break dead waiting loop if i2c device
 misbehaves.

Some fault i2c device may hold the sda/scl line and cause i2c driver
wait in the BUS busy loop. The I2C framework already retry the
transfer loop before timeout. Return -EAGAIN instead of pull BUSBUSY
in the other loop.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
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