From fbea28a2afb4251f985af52eb0180f097acaee16 Mon Sep 17 00:00:00 2001
From: Lior Amsalem <alior@marvell.com>
Date: Tue, 26 May 2015 15:07:36 +0200
Subject: [PATCH] dmaengine: mv_xor: improve descriptors list handling and
 reduce locking

This patch change the way free descriptors are marked.

Instead of having a field for descriptor in use, all the descriptors in the
all_slots list are free for use.

This simplify the allocation method and reduce the locking needed.

Signed-off-by: Lior Amsalem <alior@marvell.com>
Reviewed-by: Ofer Heifetz <oferh@marvell.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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