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authorArnd Bergmann <arnd@arndb.de>2012-07-21 23:34:31 +0200
committerArnd Bergmann <arnd@arndb.de>2012-07-21 23:34:31 +0200
commit088eb2a84b3b093af60bbe0b65151e8a9cd2d57d (patch)
tree8f145d8c71f6e249d6664b5482ac216b8c6e4016 /Documentation/ABI/testing/sysfs-class-mtd
parent6217a69a1e38807b3046b4fd6e4bf413e0e03b67 (diff)
parent84a1caf1453c3d44050bd22db958af4a7f99315c (diff)
downloadtalos-op-linux-088eb2a84b3b093af60bbe0b65151e8a9cd2d57d.tar.gz
talos-op-linux-088eb2a84b3b093af60bbe0b65151e8a9cd2d57d.zip
Merge tag 'v3.5-rc7' into late/soc
Linux 3.5-rc7
Diffstat (limited to 'Documentation/ABI/testing/sysfs-class-mtd')
-rw-r--r--Documentation/ABI/testing/sysfs-class-mtd17
1 files changed, 9 insertions, 8 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-mtd b/Documentation/ABI/testing/sysfs-class-mtd
index db1ad7e34fc3..938ef71e2035 100644
--- a/Documentation/ABI/testing/sysfs-class-mtd
+++ b/Documentation/ABI/testing/sysfs-class-mtd
@@ -142,13 +142,14 @@ KernelVersion: 3.4
Contact: linux-mtd@lists.infradead.org
Description:
This allows the user to examine and adjust the criteria by which
- mtd returns -EUCLEAN from mtd_read(). If the maximum number of
- bit errors that were corrected on any single region comprising
- an ecc step (as reported by the driver) equals or exceeds this
- value, -EUCLEAN is returned. Otherwise, absent an error, 0 is
- returned. Higher layers (e.g., UBI) use this return code as an
- indication that an erase block may be degrading and should be
- scrutinized as a candidate for being marked as bad.
+ mtd returns -EUCLEAN from mtd_read() and mtd_read_oob(). If the
+ maximum number of bit errors that were corrected on any single
+ region comprising an ecc step (as reported by the driver) equals
+ or exceeds this value, -EUCLEAN is returned. Otherwise, absent
+ an error, 0 is returned. Higher layers (e.g., UBI) use this
+ return code as an indication that an erase block may be
+ degrading and should be scrutinized as a candidate for being
+ marked as bad.
The initial value may be specified by the flash device driver.
If not, then the default value is ecc_strength.
@@ -167,7 +168,7 @@ Description:
block degradation, but high enough to avoid the consequences of
a persistent return value of -EUCLEAN on devices where sticky
bitflips occur. Note that if bitflip_threshold exceeds
- ecc_strength, -EUCLEAN is never returned by mtd_read().
+ ecc_strength, -EUCLEAN is never returned by the read operations.
Conversely, if bitflip_threshold is zero, -EUCLEAN is always
returned, absent a hard error.
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