linux-kernel - Re: [PATCH] dma: fix vchan_cookie

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Message-ID: <20140120112822.GA15937@n2100.arm.linux.org.uk>
Date:	Mon, 20 Jan 2014 11:28:22 +0000
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Vinod Koul <vinod.koul@...el.com>
Cc:	Jonas Jensen <jonas.jensen@...il.com>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	arm@...nel.org, dan.j.williams@...el.com
Subject: Re: [PATCH] dma: fix vchan_cookie_complete() debug print

On Mon, Jan 20, 2014 at 03:29:17PM +0530, Vinod Koul wrote:
> On Fri, Dec 06, 2013 at 04:42:09PM +0100, Jonas Jensen wrote:
> > vd->tx.cookie is set zero on dma_cookie_complete(),
> > save to local before printing it.
> > 
> > Signed-off-by: Jonas Jensen <jonas.jensen@...il.com>
> > ---
> > 
> > Notes:
> >     dev_vdbg() could also be moved to happen earlier, what do you prefer?
> This would be preferred IMHO. Also pls cc dmaengine@...r on this

I prefer this version - it means that the verbose debug printk doesn't
impact the completion timing when printk is expensive (eg, because its
outputting via a serial port.)

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