From c95eeae9e39314273bcda057f27100603d333518 Mon Sep 17 00:00:00 2001
From: Wolfram Sang <w.sang@pengutronix.de>
Date: Thu, 5 Apr 2012 16:15:24 +0200
Subject: [PATCH] i2c: mxs: handle spurious interrupt

After an error interrupt setting cmd->err, I see another interrupt that
the data engine is empty which clears cmd->err before being processed.
So, clear cmd->err at the beginning of a transfer only to handle these
consecutive interrupts.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
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