From 4dc48c37d1ce968b5ade7d1646927199ee536129 Mon Sep 17 00:00:00 2001
From: Shiraz Hashim <shiraz.hashim@st.com>
Date: Mon, 2 Jul 2012 11:28:46 +0530
Subject: mtd: spear_smi: clear status register on init

It was observed that sometimes smi returned errors while resume from
suspend.

For safety reasons clear status register for any errors during init. In
absence of it smi can return failures during command transmissions.

Signed-off-by: Shiraz Hashim <shiraz.hashim@st.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

diff --git a/drivers/mtd/devices/spear_smi.c b/drivers/mtd/devices/spear_smi.c
index cffd36a..aec941e 100644
--- a/drivers/mtd/devices/spear_smi.c
+++ b/drivers/mtd/devices/spear_smi.c
@@ -336,6 +336,9 @@ static void spear_smi_hw_init(struct spear_smi *dev)
 	val = HOLD1 | BANK_EN | DSEL_TIME | (prescale << 8);
 
 	mutex_lock(&dev->lock);
+	/* clear all interrupt conditions */
+	writel(0, dev->io_base + SMI_SR);
+
 	writel(val, dev->io_base + SMI_CR1);
 	mutex_unlock(&dev->lock);
 }
-- 
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