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[MTD] Fix fwh_lock locking

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This is on a custom board with a mapping driver access to an ST
M50LPW080 chip. This chip is probed successfully with
do_map_probe("jedec_probe",...). If I use the mtdchar interface to
perform unlock->erase->program->lock on any of the 16 eraseblocks in the
chip, the chip is left in FL_STATUS mode while the data structures
believe that the chip is in FL_READY mode. Hence, any subsequent reads
to any flash byte results in 0x80 being read.

Signed-off-by: Shashi Rao <shashi@sun.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
This commit is contained in:
Shashi Rao 2007-03-28 15:56:28 -07:00 committed by David Woodhouse
parent c2aecda79c
commit e6be133b68
1 changed files with 2 additions and 1 deletions
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3
drivers/mtd/chips/fwh_lock.h
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@ -65,11 +65,12 @@ static int fwh_xxlock_oneblock(struct map_info *map, struct flchip *chip,
return ret;
}
chip->oldstate = chip->state;
chip->state = xxlt->state;
map_write(map, CMD(xxlt->val), adr);
/* Done and happy. */
chip->state = FL_READY;
chip->state = chip->oldstate;
put_chip(map, chip, adr);
spin_unlock(chip->mutex);
return 0;