From b34d06c93b0f4586a16aecf5a723746e02ff6797 Mon Sep 17 00:00:00 2001
From: Grazvydas Ignotas <notasas@gmail.com>
Date: Thu, 2 Jul 2015 03:04:09 +0300
Subject: [PATCH] omap_hsmmc: avoid requesting dma repeatedly

omap_request_dma() is rather expensive operation, so don't release the
channel after every transfer, release only on autosuspend instead.
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