linux-kernel - Re: [PATCH v2] dma: fix vchan_cookie

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Date:	Mon, 20 Jan 2014 15:30:45 +0530
From:	Vinod Koul <vinod.koul@...el.com>
To:	Jonas Jensen <jonas.jensen@...il.com>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	arm@...nel.org, dan.j.williams@...el.com
Subject: Re: [PATCH v2] dma: fix vchan_cookie_complete() debug print

On Mon, Dec 09, 2013 at 10:25:23AM +0100, Jonas Jensen wrote:
> vchan_cookie_complete() is supposed to print the cookie value
> but it's always zero because:
> 
> dma_cookie_complete() is called prior to dev_vdbg()
> 
> Move the call, place it after dev_vdbg().
> 
> Signed-off-by: Jonas Jensen <jonas.jensen@...il.com>
Applied, thanks

--
~Vinod
> ---
> 
> Notes:
>     Changes since v1:
>     
>     1. remove local dma_cookie_t
>     2. call dma_cookie_complete() after dev_vdbg()
>     
>     Applies to next-20131209
> 
>  drivers/dma/virt-dma.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/dma/virt-dma.h b/drivers/dma/virt-dma.h
> index 85c19d6..7d6f611 100644
> --- a/drivers/dma/virt-dma.h
> +++ b/drivers/dma/virt-dma.h
> @@ -85,9 +85,9 @@ static inline void vchan_cookie_complete(struct virt_dma_desc *vd)
>  {
>  	struct virt_dma_chan *vc = to_virt_chan(vd->tx.chan);
>  
> -	dma_cookie_complete(&vd->tx);
>  	dev_vdbg(vc->chan.device->dev, "txd %p[%x]: marked complete\n",
>  		vd, vd->tx.cookie);
> +	dma_cookie_complete(&vd->tx);
>  	list_add_tail(&vd->node, &vc->desc_completed);
>  
>  	tasklet_schedule(&vc->task);
> -- 
> 1.8.2.1
> 

-- 
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