From dc8d4091575ba81e886ebcdfd1e559c981f82f86 Mon Sep 17 00:00:00 2001
From: Ira Snyder <iws@ovro.caltech.edu>
Date: Thu, 3 Mar 2011 07:55:00 +0000
Subject: [PATCH] fsldma: reduce locking during descriptor cleanup

This merges the fsl_chan_ld_cleanup() function into the dma_do_tasklet()
function to reduce locking overhead. In the best case, we will be able
to keep the DMA controller busy while we are freeing used descriptors.
In all cases, the spinlock is grabbed two times fewer than before on
each transaction.

Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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