linux-kernel - [PATCH 0/2] Fix CPPI Warnings during tear down after ISOCH transfers

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Message-ID: <1393478081-14226-1-git-send-email-george.cherian@ti.com>
Date:	Thu, 27 Feb 2014 10:44:39 +0530
From:	George Cherian <george.cherian@...com>
To:	<linux-kernel@...r.kernel.org>, <linux-usb@...r.kernel.org>,
	<dmaengine@...r.kernel.org>
CC:	<gregkh@...uxfoundation.org>, <balbi@...com>,
	<dan.j.williams@...el.com>, <vinod.koul@...el.com>,
	<msmucr@...il.com>, George Cherian <george.cherian@...com>
Subject: [PATCH 0/2] Fix CPPI Warnings during tear down after  ISOCH transfers

Warinings are seen after  ISOCH transfers, during channel tear down.
This is mainly beacause we handle ISOCH differently as compared to 
other transfers. 

Patch 1: make sure we do channel tear down only if channel is busy.
	 If not the tear down will never succeed.

Patch 2: ISOCH completions are done differently, so this might lead to 
	reprogram of dma channel on which already a teardown is done.
	

George Cherian (2):
  dma: cppi41: start tear down only if channel is busy
  usb: musb: musb_cppi41: Dont reprogram DMA if tear down is initiated

 drivers/dma/cppi41.c           | 7 +++++--
 drivers/usb/musb/musb_cppi41.c | 3 ++-
 2 files changed, 7 insertions(+), 3 deletions(-)

-- 
1.8.1

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