From: Dan Williams <dan.j.williams@intel.com>
Date: Fri, 18 Apr 2008 03:17:25 +0000 (-0700)
Subject: async_tx: fix multiple dependency submission
X-Git-Tag: v2.6.26-rc1~1149^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=19242d7233df7d658405d4b7ee1758d21414cfaa;p=pandora-kernel.git

async_tx: fix multiple dependency submission

Shrink struct dma_async_tx_descriptor and introduce
async_tx_channel_switch to properly inject a channel switch interrupt in
the descriptor stream.  This simplifies the locking model as drivers no
longer need to handle dma_async_tx_descriptor.lock.

Acked-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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