linux-kernel - Re: [4.0-rc+] WARNING: CPU: 0 PID: 1 at ./drivers/dma/dmaengine.c:863 dma_async_device

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Message-ID: <55255608.1080303@hurleysoftware.com>
Date:	Wed, 08 Apr 2015 12:23:36 -0400
From:	Peter Hurley <peter@...leysoftware.com>
To:	balbi@...com
CC:	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	Vinod Koul <vinod.koul@...el.com>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Linux kernel <linux-kernel@...r.kernel.org>
Subject: Re: [4.0-rc+] WARNING: CPU: 0 PID: 1 at ./drivers/dma/dmaengine.c:863
 dma_async_device_register+0xe0/0x540()

On 04/08/2015 12:09 PM, Felipe Balbi wrote:
> On Wed, Apr 08, 2015 at 12:07:14PM -0400, Peter Hurley wrote:
>> On 04/08/2015 11:59 AM, Maxime Ripard wrote:
>>> On Wed, Apr 08, 2015 at 11:53:33AM -0400, Peter Hurley wrote:
>>>> On 03/05/2015 11:12 AM, Vinod Koul wrote:
>>>>> On Thu, Mar 05, 2015 at 10:04:21AM -0500, Peter Hurley wrote:
>>>>>>> First boot of 4.0-rc+ gave me [1] on a Beaglebone Black due to
>>>>>>>
>>>>> The warning is intentional to get driver fixed and give the right behaviour
>>>>>
>>>>> Felipe had sent a patch for this but that one needs an update
>>>>
>>>> Vinod,
>>>>
>>>> Felipe's patch never made it to mainline, and this warning is 
>>>> still happening on 4.0-rc7 so please revert for 4.0-final.
>>>
>>> That patch isn't introducing any regression. I fail to see how that
>>> justifies a revert so late in the release cycle.
>>
>> Arguably it never should have been introduced in the first place, and
>> this was at least known since Mar 5 (and likely earlier); arguing that
>> it's late in the cycle is a bit disingenuous.
> 
> In Vinod's defense, he asked for changes in my patch which I didn't have
> time to implement (as of yet). Have been rather busy lately with a bunch
> of other things, I'll try to get to those changes ASAP, just need to
> finish up a bisect on another platform.

Ok, but Vinod's on vacation, and adding new functionality now definitely
seems too late.

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