linux-kernel - Re: [PATCH v4 07/11] dmaengine: sun6i: Retrieve channel count/max request from devicetree

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Date:   Mon, 16 Oct 2017 14:21:02 +0000
From:   Brüns, Stefan <Stefan.Bruens@...h-aachen.de>
To:     Vinod Koul <vinod.koul@...el.com>
CC:     "linux-sunxi@...glegroups.com" <linux-sunxi@...glegroups.com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Andre Przywara <andre.przywara@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Dan Williams <dan.j.williams@...el.com>,
        Rob Herring <robh+dt@...nel.org>,
        "dmaengine@...r.kernel.org" <dmaengine@...r.kernel.org>,
        Code Kipper <codekipper@...il.com>,
        Maxime Ripard <maxime.ripard@...e-electrons.com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v4 07/11] dmaengine: sun6i: Retrieve channel count/max
 request from devicetree

On Montag, 16. Oktober 2017 09:02:17 CEST Vinod Koul wrote:
> On Thu, Sep 28, 2017 at 03:49:24AM +0200, Stefan Brüns wrote:
> > To avoid introduction of a new compatible for each small SoC/DMA
> > controller
> > variation, move the definition of the channel count to the devicetree.
> > 
> > The number of vchans is no longer explicit, but limited by the highest
> > port/DMA request number. The result is a slight overallocation for SoCs
> > with a sparse port mapping.
> 
> This doesnt apply for me, please check

The hunk below fails after https://git.kernel.org/pub/scm/linux/kernel/git/
vkoul/slave-dma.git/commit/?h=topic/
sun&id=8f3b00347bf075fb457f90ce76573615f567e7bc
, which removed the "const struct of_device_id *device;" declaration.


> diff --git a/drivers/dma/sun6i-dma.c b/drivers/dma/sun6i-dma.c
> index 7fce976a13d8..b5906da2a975 100644
> --- a/drivers/dma/sun6i-dma.c
> +++ b/drivers/dma/sun6i-dma.c
> @@ -42,6 +42,9 @@
..
> @@ -1155,6 +1159,7 @@ MODULE_DEVICE_TABLE(of, sun6i_dma_match);
>  static int sun6i_dma_probe(struct platform_device *pdev)
>  {
>  	const struct of_device_id *device;
> +	struct device_node *np = pdev->dev.of_node;
>  	struct sun6i_dma_dev *sdc;
>  	struct resource *res;
>  	int ret, i;

Can you fix this up, or should I send a new version of this patch?

Kind regards,

Stefan