Re: [PATCH] dma-mapping: move dma configuration to bus infrastructure

[Sinan Kaya]

On 3/12/2018 11:24 AM, Nipun Gupta wrote:
> +	if (dma_dev->of_node) {
> +		ret = of_dma_configure(dev, dma_dev->of_node);
> +	} else if (has_acpi_companion(dma_dev)) {
> +		attr = acpi_get_dma_attr(to_acpi_device_node(dma_dev->fwnode));
> +		if (attr != DEV_DMA_NOT_SUPPORTED)
> +			ret = acpi_dma_configure(dev, attr);
> +	}
> +
> +	pci_put_host_bridge_device(bridge);
> +
> +	return ret;
> +}
> +
> +void pci_dma_deconfigure(struct device *dev)
> +{
> +	of_dma_deconfigure(dev);
> +	acpi_dma_deconfigure(dev);
> +}

Isn't this one or the other one but not both?

Something like:

if (dev->of_node)
	of_dma_deconfigure(dev);
else
	acpi_dma_deconfigure(dev);

should work.

-- 
Sinan Kaya
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.