From: Tim Chen <tim.c.chen@linux.intel.com>
Date: Thu, 10 Jul 2014 23:18:08 +0000 (-0700)
Subject: crypto: hash - initialize entry len for null input in crypto hash sg list walk
X-Git-Tag: fixes-for-v3.18-merge-window~17^2~48
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6d9529c586dbf0d356916d113f72f36397e71cdb;p=pandora-kernel.git

crypto: hash - initialize entry len for null input in crypto hash sg list walk

For the special case when we have a null input string, we want
to initialize the entry len to 0 for the hash/ahash walk, so
cyrpto_hash_walk_last will return the correct result indicating
that we have completed the scatter list walk.  Otherwise we may
keep walking the sg list and access bogus memory address.

Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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