From: Theodore Ts'o <tytso@mit.edu>
Date: Wed, 11 Jun 2014 02:46:37 +0000 (-0400)
Subject: random: always update the entropy pool under the spinlock
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~106^2~11
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=91fcb532efe366d79b93a3c8c368b9dca6176a55;p=pandora-kernel.git

random: always update the entropy pool under the spinlock

Instead of using lockless techniques introduced in commit
902c098a3663, use spin_trylock to try to grab entropy pool's lock.  If
we can't get the lock, then just try again on the next interrupt.

Based on discussions with George Spelvin.

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: George Spelvin <linux@horizon.com>
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