From: Brian Norris <computersforpeace@gmail.com>
Date: Wed, 21 Sep 2011 01:35:08 +0000 (-0700)
Subject: mtd: nand: report ECC errors properly when reading BBT
X-Git-Tag: v3.2-rc1~14^2~20
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=167a8d52509a0f7d6728a79e2588b800e866c147;p=pandora-kernel.git

mtd: nand: report ECC errors properly when reading BBT

Instead of just printing a warning when encountering ECC errors, we
should return a proper error status and print a more informative
warning. Later, we will handle these error messages in the upper layers
of the BBT scan.

Note that this patch makes our check for ECC error codes a little bit
more restrictive, leaving all unrecognized errors to the generic "else"
clause. This shouldn't cause problems and could even be a benefit.

This code is based on some findings reported by Matthieu Castet.

Reported-by: Matthieu CASTET <matthieu.castet@parrot.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
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