From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Thu, 10 May 2012 22:45:24 +0000 (+0100)
Subject: dmaengine: sa11x0-dma: fix DMA residue support
X-Git-Tag: v3.6-rc1~13^2^3~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=63fe23c34e1c18725bd1459897bf3a46335d88b7;p=pandora-kernel.git

dmaengine: sa11x0-dma: fix DMA residue support

The semantics now implemented are:

- If the cookie has completed successfully, the residue will be zero.
- If the cookie is in progress or the channel is paused, it will be the
  number of bytes yet to be transferred. [*]
- If the cookie is queued, it will be the number of bytes in the
  descriptor.

* - where this is the number of bytes yet to be transferred to/from
  RAM.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

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