[PATCH v23 12/14] crypto: qce - Map crypto memory for DMA

[Mukesh Savaliya]

On 7/21/2026 7:03 PM, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bartosz.golaszewski at linaro.org>

[...]

>   static int qce_crypto_probe(struct platform_device *pdev)
>   {
>   	struct device *dev = &pdev->dev;
>   	struct qce_device *qce;
> +	struct resource *res;
>   	int ret;
>   
>   	qce = devm_kzalloc(dev, sizeof(*qce), GFP_KERNEL);
> @@ -204,7 +213,7 @@ static int qce_crypto_probe(struct platform_device *pdev)
>   	qce->dev = dev;
>   	platform_set_drvdata(pdev, qce);
>   
> -	qce->base = devm_platform_ioremap_resource(pdev, 0);
> +	qce->base = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
>   	if (IS_ERR(qce->base))
Would you like to add any debug/error log ?
>   		return PTR_ERR(qce->base);
>   
> @@ -254,6 +263,18 @@ static int qce_crypto_probe(struct platform_device *pdev)
>   	qce->async_req_enqueue = qce_async_request_enqueue;
>   	qce->async_req_done = qce_async_request_done;
>   
> +	qce->dma_size = resource_size(res);
> +	qce->base_dma = dma_map_resource(dev, res->start, qce->dma_size,
> +					 DMA_BIDIRECTIONAL, 0);
> +	qce->base_phys = res->start;
> +	ret = dma_mapping_error(dev, qce->base_dma);
> +	if (ret)
Would you like to add any debug/error log ?
> +		return ret;
> +
> +	ret = devm_add_action_or_reset(qce->dev, qce_crypto_unmap_dma, qce);
> +	if (ret)
same here
> +		return ret;
> +
>   	return devm_qce_register_algs(qce);
>   }
>   

[...]