On Tue, 2012-04-17 at 10:48 +0200, Ivan Djelic wrote: > This patch adds a simple BCH ecc computation api, similar to the > existing Hamming ecc api. It is intended to be used by the MTD layer. > It implements the following features: > > - support 4-bit and 8-bit ecc computation > - do not protect user bytes in spare area, only data area is protected > - ecc for an erased NAND page (0xFFs) is also a sequence of 0xFFs > > This last feature is obtained by adding a constant polynomial to > the hardware computed ecc. It allows to correct bitflips in blank pages > and is extremely useful to support filesystems such as UBIFS, which expect > erased pages to contain only 0xFFs. > > This api has been tested on an OMAP3630 board. > > Signed-off-by: Ivan Djelic <ivan.djelic@xxxxxxxxxx> Hi Tony, what do you think about merging this patch? This is the enabler for making UBIFS actually usable on OMAP platforms which use BCH ECC. There are 2 other MTD patches which depend on this - so I wonder if it is easier to merge this one via the MTD tree, providing it has your/others' ack(s). Thanks! -- Best Regards, Artem Bityutskiy
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