linux-kernel - Re: [PATCH v5 59/61] dmaengine: Add a warning for drivers not using the generic slave caps retrieval

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Date:	Fri, 20 Feb 2015 11:54:24 +0530
From:	Vinod Koul <vinod.koul@...el.com>
To:	Viresh Kumar <viresh.kumar@...aro.org>
Cc:	Jean Delvare <jdelvare@...e.de>,
	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	Brian Loften <bloften80@...il.com>, dmaengine@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Antoine Ténart <antoine@...e-electrons.com>,
	Russell King <linux@....linux.org.uk>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: Re: [PATCH v5 59/61] dmaengine: Add a warning for drivers not using
 the generic slave caps retrieval

On Thu, Feb 19, 2015 at 02:23:27PM +0530, Viresh Kumar wrote:
> On 19 February 2015 at 13:39, Jean Delvare <jdelvare@...e.de> wrote:
> > My understanding is that the warning message is here on purpose to
> > instruct DMA driver authors to fix their code. So if anyone need to fix
> > anything, that would be you and Andy. That being said, I suspect Andy
> 
> To some extent yes, but Andy has already tried to fix that for most of
> the drivers and so I just pointed out that something is missed.
> 
> > already did that:
> >
> > commit 029a40e97d0db269f4a7fc02b0f29f627f628309
> > Author: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> > Date:   Fri Jan 2 16:17:24 2015 +0200
> >
> >     dmaengine: dw: provide DMA capabilities
> >
> > Brian, can you please try the latest Linus or linux-next kernel (or
> > backport the above commit to your current kernel) and confirm that the
> > backtraces are no longer printed?
> 
> Maybe yes.
This warning was intentionally added to help move driver use the right
method. And I have applied patch from Andy for this, so this should be no
longer seen on Linus's tree

-- 
~Vinod
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