Qi Wang 王起 (qiwang) 2c7ca5cc36 UBI: avoid program operation on NOR flash after erasure interrupted ...

nor_erase_prepare() will be called before erase a NOR flash, it will program '0'
into a block to mark this block. But program data into a erasure interrupted block
can cause program timtout(several minutes at most) error, could impact other
operation on NOR flash. So UBIFS can read this block first to avoid unneeded
program operation.

This patch try to put read operation at head of write operation in
nor_erase_prepare(), read out the data.
If the data is already corrupt, then no need to program any data into this block,
just go to erase this block.

This patch is validated on Micron NOR flash, part number is：JS28F512M29EWHA

Signed-off-by: Qi Wang <qiwang@micron.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>

2014-01-09 18:25:38 +02:00

..

attach.c

UBI: fix error return code

2014-01-02 17:16:01 +02:00

build.c

UBI: fix error return code

2014-01-02 17:16:01 +02:00

cdev.c

ubi/cdev: switch to fixed_size_llseek()

2013-06-29 12:57:49 +04:00

debug.c

UBI: embed ubi_debug_info field in ubi_device struct

2012-12-10 13:38:59 +02:00

debug.h

mtd: rename random32() to prandom_u32()

2013-02-04 09:26:28 +02:00

eba.c

UBI: Wire-up ->fm_sem

2012-10-03 12:29:37 +03:00

fastmap.c

UBI: Add some asserts to ubi_attach_fastmap()

2013-10-03 19:42:51 +03:00

gluebi.c

UBI: gluebi: rename misleading variables

2012-11-30 13:54:41 +02:00

io.c

UBI: avoid program operation on NOR flash after erasure interrupted

2014-01-09 18:25:38 +02:00

kapi.c

UBI: modify ubi_wl_flush function to clear work queue for a lnum

2012-05-21 11:34:41 +03:00

Kconfig

UBI: Wire-up fastmap

2012-10-03 16:39:37 +03:00

Makefile

UBI: Wire-up fastmap

2012-10-03 16:39:37 +03:00

misc.c

UBI: comply with coding style

2012-09-04 09:39:01 +03:00

ubi-media.h

UBI: Add fastmap on-flash data structures

2012-10-03 12:29:37 +03:00

ubi.h

UBI: embed ubi_debug_info field in ubi_device struct

2012-12-10 13:38:59 +02:00

upd.c

UBI: replace memcpy with struct assignment

2012-12-03 13:54:14 +02:00

vmt.c

UBI: introduce helpers dbg_chk_{io, gen}

2012-12-10 13:38:59 +02:00

vtbl.c

UBI: introduce helpers dbg_chk_{io, gen}

2012-12-10 13:38:59 +02:00

wl.c

UBI: fix refill_wl_user_pool()

2013-10-03 19:42:46 +03:00