linux_dsm_epyc7002/drivers/mtd
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
..
chips
devices mtd: dataflash: Say if we find a device we don't support 2013-11-07 00:08:55 -08:00
lpddr mtd: lpddr_cmds: make function static 2013-10-27 16:27:03 -07:00
maps mtd: plat-ram: Use module_platform_driver 2013-11-06 23:32:55 -08:00
nand mtd: nand: pxa3xx: Use info->use_dma to release DMA resources 2013-12-12 15:02:04 -08:00
onenand tree-wide: use reinit_completion instead of INIT_COMPLETION 2013-11-15 09:32:21 +09:00
tests mtd: nand: add a helper to detect the nand type 2013-10-27 16:27:06 -07:00
ubi UBI: avoid program operation on NOR flash after erasure interrupted 2014-01-09 18:25:38 +02:00
afs.c
ar7part.c
bcm47xxpart.c mtd: bcm47xxpart: detect "factory" partition 2013-11-06 23:32:58 -08:00
bcm63xxpart.c
cmdlinepart.c
ftl.c
inftlcore.c mtd: nand: add a helper to detect the nand type 2013-10-27 16:27:06 -07:00
inftlmount.c
Kconfig
Makefile
mtd_blkdevs.c
mtdblock_ro.c mtd: Move major number definitions to major.h 2013-11-06 23:32:59 -08:00
mtdblock.c mtd: Move major number definitions to major.h 2013-11-06 23:32:59 -08:00
mtdchar.c mtd: mtdchar: return expected errors on mmap() call 2013-11-11 11:18:15 -08:00
mtdconcat.c
mtdcore.c mtd: remove duplicated include from mtdcore.c 2013-11-06 23:33:12 -08:00
mtdcore.h
mtdoops.c
mtdpart.c
mtdsuper.c mtd: Move major number definitions to major.h 2013-11-06 23:32:59 -08:00
mtdswap.c mtd: mtdswap: replace strict_strtoul() with kstrtoul() 2013-08-30 21:52:51 +01:00
nftlcore.c mtd: nand: add a helper to detect the nand type 2013-10-27 16:27:06 -07:00
nftlmount.c
ofpart.c mtd: ofpart: use for_each_child_of_node() macro 2013-08-30 21:52:57 +01:00
redboot.c
rfd_ftl.c
sm_ftl.c
sm_ftl.h
ssfdc.c mtd: nand: add a helper to detect the nand type 2013-10-27 16:27:06 -07:00