From a86aaa6ddf32b0401e64e74174042866e0fb3e20 Mon Sep 17 00:00:00 2001
From: David Anders <dave123_aml@yahoo.com>
Date: Thu, 19 Oct 2006 19:33:19 +0300
Subject: [PATCH] [MTD] NOR: leave Intel chips in read-array mode on suspend

During some testing with several samsung s3c24xx based
devices it was discovered that often the
cfi_cmdset_0001.c would not leave the chip in
read-array mode on suspend. this is an issue if the
same flash chip is used for the bootloader that needs
to be read on resume.

Signed-off-by: David Anders <danders@amltd.com>
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
---
 drivers/mtd/chips/cfi_cmdset_0001.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c
index 7ea49a0d5ec3..e24973636e61 100644
--- a/drivers/mtd/chips/cfi_cmdset_0001.c
+++ b/drivers/mtd/chips/cfi_cmdset_0001.c
@@ -2224,6 +2224,8 @@ static int cfi_intelext_suspend(struct mtd_info *mtd)
 		case FL_CFI_QUERY:
 		case FL_JEDEC_QUERY:
 			if (chip->oldstate == FL_READY) {
+				/* place the chip in a known state before suspend */
+				map_write(map, CMD(0xFF), cfi->chips[i].start);
 				chip->oldstate = chip->state;
 				chip->state = FL_PM_SUSPENDED;
 				/* No need to wake_up() on this state change -
-- 
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