mtd: ABI documentation: clarification of bitflip_threshold

Linux-MTD Mailing List linux-mtd at lists.infradead.org
Fri Jul 6 10:59:02 EDT 2012


Gitweb:     http://git.infradead.org/?p=mtd-2.6.git;a=commit;h=021796b892dcad45743f3196e3eef7222870dd55
Commit:     021796b892dcad45743f3196e3eef7222870dd55
Parent:     6023813a2d5949ba368e7df464f2ccb649719777
Author:     Mike Dunn <mikedunn at newsguy.com>
AuthorDate: Tue May 22 11:03:42 2012 -0700
Committer:  David Woodhouse <David.Woodhouse at intel.com>
CommitDate: Fri Jul 6 15:10:06 2012 +0100

    mtd: ABI documentation: clarification of bitflip_threshold
    
    The -EUCLEAN return value applies to mtd_read_oob() as well as mtd_read(), but
    only mtd_read() was mentioned in the blurd on bitflip_threshold in the ABI
    documentation.
    
    Signed-off-by: Mike Dunn <mikedunn at newsguy.com>
    Signed-off-by: Artem Bityutskiy <artem.bityutskiy at linux.intel.com>
    Signed-off-by: David Woodhouse <David.Woodhouse at intel.com>
---
 Documentation/ABI/testing/sysfs-class-mtd |   17 +++++++++--------
 1 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/Documentation/ABI/testing/sysfs-class-mtd b/Documentation/ABI/testing/sysfs-class-mtd
index db1ad7e..938ef71 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 at 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.
 



More information about the linux-mtd-cvs mailing list