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[MTD] NOR: leave Intel chips in read-array mode on suspend

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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>
This commit is contained in:
David Anders 2006-10-19 19:33:19 +03:00 committed by David Woodhouse
parent d29ebdbee4
commit a86aaa6ddf
1 changed files with 2 additions and 0 deletions
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2
drivers/mtd/chips/cfi_cmdset_0001.c
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@ -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 -