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: <20150409070927.GI26727@lukather>
Date:	Thu, 9 Apr 2015 09:09:27 +0200
From:	Maxime Ripard <maxime.ripard@...e-electrons.com>
To:	Peter Hurley <peter@...leysoftware.com>
Cc:	Vinod Koul <vinod.koul@...el.com>, Felipe Balbi <balbi@...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 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

Upon which arguments? So far, I've seen none but "my boot logs look
bad now".

> and this was at least known since Mar 5 (and likely earlier);
> arguing that it's late in the cycle is a bit disingenuous.

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

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