Commit 4dc48c37 authored Jul 02, 2012 by Shiraz Hashim Committed by David Woodhouse Jul 06, 2012

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>

parent 770daa43

drivers/mtd/devices/spear_smi.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -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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