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Artem Bityutskiy c1194c7932 mtd: nand_base: do not cache pages with uncorrectable ECC errors 
Currently MTD caches the last read NAND page, even if there was an uncorrectable ECC
error. This patch prevents caching in case of uncorrectable ECC errors. The reason
is that we want to allow the user to re-read the NAND page several times. In case of
unstable bits re-trying may help.

Moreover, current behavior is wrong because the first read returns -EBADMSG (correctly)
but the second read succeeds and incorrectly returns 0 (because we read from the cache).

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-10-25 00:13:34 +01:00
..
chips mtd: cleanup Kconfig dependencies 2010-10-24 23:37:32 +01:00
devices mtd: m25p80: Add support for two new Spansion SPI devices (S25FL-K) 2010-10-24 23:49:10 +01:00
lpddr mtd: change struct flchip_shared spinlock locking into mutex 2010-08-06 09:22:16 +01:00
maps mtd: add Broadcom BCM63xx image tag partition parser 2010-10-25 00:13:05 +01:00
nand mtd: nand_base: do not cache pages with uncorrectable ECC errors 2010-10-25 00:13:34 +01:00
onenand mtd: OneNAND: Remove unused cmd_map at s5pc110 2010-10-24 23:44:52 +01:00
tests mtd: tests: return -1 if verify failed 2010-08-02 09:06:20 +01:00
ubi UBI: do not oops when erroneous PEB is scheduled for scrubbing 2010-08-30 13:32:31 +03:00
afs.c mtd: Update copyright notices 2010-08-08 20:58:20 +01:00
ar7part.c
cmdlinepart.c mtd: Update copyright notices 2010-08-08 20:58:20 +01:00
ftl.c mtd: Update copyright notices 2010-08-08 20:58:20 +01:00
inftlcore.c mtd: Update copyright notices 2010-08-08 20:58:20 +01:00
inftlmount.c mtd: Remove obsolete <mtd/compatmac.h> include 2010-08-08 21:19:42 +01:00
Kconfig mtd: update description on sm_ftl 2010-08-06 09:21:40 +01:00
Makefile Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2010-05-10 14:32:46 +01:00
mtd_blkdevs.c Merge branch 'for-2.6.36' of git://git.kernel.dk/linux-2.6-block 2010-08-10 15:22:42 -07:00
mtdblock.c mtd: Update copyright notices 2010-08-08 20:58:20 +01:00
mtdblock_ro.c mtd: Update copyright notices 2010-08-08 20:58:20 +01:00
mtdchar.c mtd: sanity check ioctl input 2010-10-24 23:52:49 +01:00
mtdconcat.c mtd: Update copyright notices 2010-08-08 20:58:20 +01:00
mtdcore.c mtd: Remove obsolete <mtd/compatmac.h> include 2010-08-08 21:19:42 +01:00
mtdcore.h mtd: Replace static array of devices with an idr structure 2010-02-25 11:55:14 +00:00
mtdoops.c mtd: Update copyright notices 2010-08-08 20:58:20 +01:00
mtdpart.c mtd: Remove obsolete <mtd/compatmac.h> include 2010-08-08 21:19:42 +01:00
mtdsuper.c mtd: Update copyright notices 2010-08-08 20:58:20 +01:00
nftlcore.c mtd: Update copyright notices 2010-08-08 20:58:20 +01:00
nftlmount.c mtd: Update copyright notices 2010-08-08 20:58:20 +01:00
ofpart.c mtd: Update copyright notices 2010-08-08 20:58:20 +01:00
redboot.c mtd: Update copyright notices 2010-08-08 20:58:20 +01:00
rfd_ftl.c mtd: Update copyright notices 2010-08-08 20:58:20 +01:00
sm_ftl.c bitops: rename for_each_bit() to for_each_set_bit(): mtd 2010-04-08 09:42:41 +01:00
sm_ftl.h mtd: Add new SmartMedia/xD FTL 2010-02-26 19:06:50 +00:00
ssfdc.c mtd: Update copyright notices 2010-08-08 20:58:20 +01:00