From: Stephan Mueller <smueller@chronox.de>
Date: Thu, 31 Jul 2014 19:47:33 +0000 (+0200)
Subject: crypto: drbg - fix failure of generating multiple of 2**16 bytes
X-Git-Tag: cleanup-for-v3.18~153^2
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ce5481d01f67ad304908ec2113515440c0fa86eb;p=pandora-kernel.git

crypto: drbg - fix failure of generating multiple of 2**16 bytes

The function drbg_generate_long slices the request into 2**16 byte
or smaller chunks. However, the loop, however invokes the random number
generation function with zero bytes when the request size is a multiple
of 2**16 bytes. The fix prevents zero bytes requests.

Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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