linux-kernel - Re: [PATCH] dmaengine: edma: Implement device

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Message-ID: <56BC4DC9.6000309@ti.com>
Date:	Thu, 11 Feb 2016 11:00:57 +0200
From:	Peter Ujfalusi <peter.ujfalusi@...com>
To:	<vinod.koul@...el.com>
CC:	<linux-kernel@...r.kernel.org>, <dmaengine@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <nsekhar@...com>,
	<linux-omap@...r.kernel.org>
Subject: Re: [PATCH] dmaengine: edma: Implement device_synchronize callback

On 02/11/2016 10:54 AM, Peter Ujfalusi wrote:
> We need the callback to support the dmaengine_terminate_sync().

I have made some typos and I only compiled the kernel after sending the patch..
Resending.

> 
> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...com>
> ---
>  drivers/dma/edma.c | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c
> index 2dac314a2d7a..ea0d919a3318 100644
> --- a/drivers/dma/edma.c
> +++ b/drivers/dma/edma.c
> @@ -869,6 +869,13 @@ static int edma_terminate_all(struct dma_chan *chan)
>  	return 0;
>  }
>  
> +static void edma_synchronize(struct dma_chan *c)
> +{
> +	struct edma_chan *echan = to_edma_chan(chan);
> +
> +	vchan_synchronize(&echan->vchan);
> +}
> +
>  static int edma_slave_config(struct dma_chan *chan,
>  	struct dma_slave_config *cfg)
>  {
> @@ -1808,6 +1815,7 @@ static void edma_dma_init(struct edma_cc *ecc, bool legacy_mode)
>  	s_ddev->device_pause = edma_dma_pause;
>  	s_ddev->device_resume = edma_dma_resume;
>  	s_ddev->device_terminate_all = edma_terminate_all;
> +	s_ddev->device_synchronize = edma_synchronize;
>  
>  	s_ddev->src_addr_widths = EDMA_DMA_BUSWIDTHS;
>  	s_ddev->dst_addr_widths = EDMA_DMA_BUSWIDTHS;
> @@ -1833,6 +1841,7 @@ static void edma_dma_init(struct edma_cc *ecc, bool legacy_mode)
>  		m_ddev->device_pause = edma_dma_pause;
>  		m_ddev->device_resume = edma_dma_resume;
>  		m_ddev->device_terminate_all = edma_terminate_all;
> +		m_ddev->device_synchronize = edma_synchronize;
>  
>  		m_ddev->src_addr_widths = EDMA_DMA_BUSWIDTHS;
>  		m_ddev->dst_addr_widths = EDMA_DMA_BUSWIDTHS;
> 


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