From: Charles Manning <manningc2@actrix.gen.nz>
To: "linux-omap@vger.kernel.org" <linux-omap@vger.kernel.org>
Subject: No more software ECC in omap2.c NAND driver. Why?
Date: Thu, 18 Nov 2010 14:06:15 +1300 [thread overview]
Message-ID: <201011181406.15212.manningc2@actrix.gen.nz> (raw)
Between 2.6.35 and 2.6.36 there have need quite a few changes in the NAND
driver, including a change from software to hardware ECC.
The new code has hardware ECC forced on by:
#define CONFIG_MTD_NAND_OMAP_HWECC
I am surprised that this was done. Surely this should have been a Kconfig
option to select either sw ECC or hw ECC?
Does moving to hardware ECC to the exclusion of software ECC reduce
functionality?
Does the new hwecc scheme still support sub-page writes or does it only
provide full page writes? If sub-page writes are lost then this has a ripple
effect in breaking the way some UBI stuff works.
-- Charles
next reply other threads:[~2010-11-18 1:12 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-18 1:06 Charles Manning [this message]
2010-11-18 14:33 ` No more software ECC in omap2.c NAND driver. Why? Ghorai, Sukumar
2010-11-19 10:35 ` Grazvydas Ignotas
2010-11-19 20:45 ` Ghorai, Sukumar
2010-11-21 21:01 ` Charles Manning
2010-11-22 6:08 ` Grant Erickson
2010-11-22 6:27 ` Ghorai, Sukumar
2010-11-22 6:39 ` Grant Erickson
2010-11-22 7:29 ` Ghorai, Sukumar
2010-11-22 19:03 ` Grant Erickson
2010-11-24 14:08 ` Ghorai, Sukumar
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