From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 22 Oct 2013 10:14:05 +0000 (+0200)
Subject: dma: cppi41: redo descriptor collection in abort case
X-Git-Tag: v3.13-rc1~29^2~15
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1e378a6d7789bf142319c6207398367336c49082;p=pandora-kernel.git

dma: cppi41: redo descriptor collection in abort case

Most of the logic here is try and error since what actually happens does
not match the trm or I miss read it.
My first assumption was that the queue on which the tear-down descriptor
completes (their own complete queue vs "active descriptor" complete
queue) depends on the transfer direction. This seems not to be true
because I manage to trigger
|  WARN_ON(c->desc_phys != desc_phys);
and the other few were fine means the tear-down descriptor was valid but
on different queue.

This patch changes the logic here to look on both queues for the
descriptor.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
---

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