linux-kernel - Re: [PATCH 6/7 v5] bus: fsl-mc: set coherent dma mask for devices on fsl-mc bus

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Date:   Tue, 3 Jul 2018 17:15:40 +0100
From:   Robin Murphy <robin.murphy@....com>
To:     Nipun Gupta <nipun.gupta@....com>, will.deacon@....com,
        robh+dt@...nel.org, robh@...nel.org, mark.rutland@....com,
        catalin.marinas@....com, gregkh@...uxfoundation.org,
        laurentiu.tudor@....com, bhelgaas@...gle.com
Cc:     hch@....de, joro@...tes.org, m.szyprowski@...sung.com,
        shawnguo@...nel.org, frowand.list@...il.com,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linuxppc-dev@...ts.ozlabs.org, linux-pci@...r.kernel.org,
        bharat.bhushan@....com, stuyoder@...il.com, leoyang.li@....com
Subject: Re: [PATCH 6/7 v5] bus: fsl-mc: set coherent dma mask for devices on
 fsl-mc bus

On 20/05/18 14:49, Nipun Gupta wrote:
> of_dma_configure() API expects coherent_dma_mask to be correctly
> set in the devices. This patch does the needful.

Reviewed-by: Robin Murphy <robin.murphy@....com>

> Signed-off-by: Nipun Gupta <nipun.gupta@....com>
> ---
>   drivers/bus/fsl-mc/fsl-mc-bus.c | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/bus/fsl-mc/fsl-mc-bus.c b/drivers/bus/fsl-mc/fsl-mc-bus.c
> index fa43c7d..624828b 100644
> --- a/drivers/bus/fsl-mc/fsl-mc-bus.c
> +++ b/drivers/bus/fsl-mc/fsl-mc-bus.c
> @@ -627,6 +627,7 @@ int fsl_mc_device_add(struct fsl_mc_obj_desc *obj_desc,
>   		mc_dev->icid = parent_mc_dev->icid;
>   		mc_dev->dma_mask = FSL_MC_DEFAULT_DMA_MASK;
>   		mc_dev->dev.dma_mask = &mc_dev->dma_mask;
> +		mc_dev->dev.coherent_dma_mask = mc_dev->dma_mask;
>   		dev_set_msi_domain(&mc_dev->dev,
>   				   dev_get_msi_domain(&parent_mc_dev->dev));
>   	}
>