[MTD] [OneNAND] Allow for controller errors when reading
authorAdrian Hunter <ext-adrian.hunter@nokia.com>
Mon, 14 Apr 2008 06:39:39 +0000 (09:39 +0300)
committerDavid Woodhouse <dwmw2@infradead.org>
Tue, 22 Apr 2008 20:26:16 +0000 (21:26 +0100)
commit67e5a28b35254bbbcd5bfce61ef646709e059bbf
tree044fe264f3f770a93fa4de00c8ff0a909d0e007b
parentf1ebe4eba40e0ee862767893277d1b1a1e4cc85f
[MTD] [OneNAND] Allow for controller errors when reading

A power loss while writing can result in a page becoming unreadable.
When the device is mounted again, reading that page gives controller
errors. Upper level software like JFFS2 treat -EIO as fatal, refusing to
mount at all.  That means it is necessary to treat the error as an ECC
error to allow recovery. Note that typically in this case, the
eraseblock can still be erased and rewritten i.e. it has not become a
bad block.

Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
drivers/mtd/onenand/onenand_base.c