From 4dc48c37d1ce968b5ade7d1646927199ee536129 Mon Sep 17 00:00:00 2001 From: Shiraz Hashim Date: Mon, 2 Jul 2012 11:28:46 +0530 Subject: [PATCH] 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 Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/devices/spear_smi.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/mtd/devices/spear_smi.c b/drivers/mtd/devices/spear_smi.c index cffd36a916d0..aec941e74e67 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); }