From f20f8f21e0402c785c342547f7e49eafc42cfb52 Mon Sep 17 00:00:00 2001
From: Linus Walleij <linus.walleij@stericsson.com>
Date: Tue, 19 Oct 2010 13:41:24 +0100
Subject: [PATCH] ARM: 6399/3: mmci: handle broken MCI_DATABLOCKEND hardware

On the U300 the MCI_DATAEND and MCI_DATABLOCKEND IRQs can arrive
out-of-order. Replace an ugly #ifdef hack with a proper runtime
solution which models what is really happening.

In the U300 DMA mode and on all Ux500 models, the MCI_DATABLOCKEND
flag isn't properly cleared in hardware following and ACK leading
to all kind of weird behaviour when the flag is still up in
subsequent interrupts, so we add two flags indicating the
error and handle this runtime.

Cc: Rabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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