From: Zhang Wei <wei.zhang@freescale.com>
Date: Wed, 19 Mar 2008 01:45:00 +0000 (-0700)
Subject: fsldma: Fix the DMA halt when using DMA_INTERRUPT async_tx transfer.
X-Git-Tag: v2.6.25-rc7~100^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f79abb627f033c85a6088231f20c85bc4a9bd757;p=pandora-kernel.git

fsldma: Fix the DMA halt when using DMA_INTERRUPT async_tx transfer.

The DMA_INTERRUPT async_tx is a NULL transfer, thus the BCR(count register)
is 0. When the transfer started with a byte count of zero, the DMA
controller will triger a PE(programming error) event and halt, not a normal
interrupt. I add special codes for PE event and DMA_INTERRUPT
async_tx testing.

Signed-off-by: Zhang Wei <wei.zhang@freescale.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---

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