diff mbox series

[v4,07/14] dmaengine: tegra-apb: Use devm_request_irq

Message ID 20200112173006.29863-8-digetx@gmail.com (mailing list archive)
State Changes Requested
Headers show
Series NVIDIA Tegra APB DMA driver fixes and improvements | expand

Commit Message

Dmitry Osipenko Jan. 12, 2020, 5:29 p.m. UTC 
Use resource-managed variant of request_irq for brevity.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 drivers/dma/tegra20-apb-dma.c | 35 +++++++++++------------------------
 1 file changed, 11 insertions(+), 24 deletions(-)

Comments

Jon Hunter Jan. 14, 2020, 3:44 p.m. UTC | #1 
On 12/01/2020 17:29, Dmitry Osipenko wrote:
> Use resource-managed variant of request_irq for brevity.
> 
> Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
> ---
>  drivers/dma/tegra20-apb-dma.c | 35 +++++++++++------------------------
>  1 file changed, 11 insertions(+), 24 deletions(-)
> 
> diff --git a/drivers/dma/tegra20-apb-dma.c b/drivers/dma/tegra20-apb-dma.c
> index f44291207928..dff21e80ffa4 100644
> --- a/drivers/dma/tegra20-apb-dma.c
> +++ b/drivers/dma/tegra20-apb-dma.c
> @@ -182,7 +182,6 @@ struct tegra_dma_channel {
>  	char			name[12];
>  	bool			config_init;
>  	int			id;
> -	int			irq;
>  	void __iomem		*chan_addr;
>  	spinlock_t		lock;
>  	bool			busy;
> @@ -1380,7 +1379,6 @@ static const struct tegra_dma_chip_data tegra148_dma_chip_data = {
>  
>  static int tegra_dma_probe(struct platform_device *pdev)
>  {
> -	struct resource *res;
>  	struct tegra_dma *tdma;
>  	int ret;
>  	int i;
> @@ -1446,25 +1444,27 @@ static int tegra_dma_probe(struct platform_device *pdev)
>  	INIT_LIST_HEAD(&tdma->dma_dev.channels);
>  	for (i = 0; i < cdata->nr_channels; i++) {
>  		struct tegra_dma_channel *tdc = &tdma->channels[i];
> +		int irq;
>  
>  		tdc->chan_addr = tdma->base_addr +
>  				 TEGRA_APBDMA_CHANNEL_BASE_ADD_OFFSET +
>  				 (i * cdata->channel_reg_size);
>  
> -		res = platform_get_resource(pdev, IORESOURCE_IRQ, i);
> -		if (!res) {
> -			ret = -EINVAL;
> +		irq = platform_get_irq(pdev, i);
> +		if (irq < 0) {
> +			ret = irq;
>  			dev_err(&pdev->dev, "No irq resource for chan %d\n", i);
> -			goto err_irq;
> +			goto err_pm_disable;
>  		}
> -		tdc->irq = res->start;
> +
>  		snprintf(tdc->name, sizeof(tdc->name), "apbdma.%d", i);
> -		ret = request_irq(tdc->irq, tegra_dma_isr, 0, tdc->name, tdc);
> +		ret = devm_request_irq(&pdev->dev, irq, tegra_dma_isr, 0,
> +				       tdc->name, tdc);
>  		if (ret) {
>  			dev_err(&pdev->dev,
>  				"request_irq failed with err %d channel %d\n",
>  				ret, i);
> -			goto err_irq;
> +			goto err_pm_disable;
>  		}
>  
>  		tdc->dma_chan.device = &tdma->dma_dev;
> @@ -1517,7 +1517,7 @@ static int tegra_dma_probe(struct platform_device *pdev)
>  	if (ret < 0) {
>  		dev_err(&pdev->dev,
>  			"Tegra20 APB DMA driver registration failed %d\n", ret);
> -		goto err_irq;
> +		goto err_pm_disable;
>  	}
>  
>  	ret = of_dma_controller_register(pdev->dev.of_node,
> @@ -1534,13 +1534,7 @@ static int tegra_dma_probe(struct platform_device *pdev)
>  
>  err_unregister_dma_dev:
>  	dma_async_device_unregister(&tdma->dma_dev);
> -err_irq:
> -	while (--i >= 0) {
> -		struct tegra_dma_channel *tdc = &tdma->channels[i];
> -
> -		free_irq(tdc->irq, tdc);
> -	}
> -
> +err_pm_disable:
>  	pm_runtime_disable(&pdev->dev);
>  	if (!pm_runtime_status_suspended(&pdev->dev))
>  		tegra_dma_runtime_suspend(&pdev->dev);
> @@ -1550,16 +1544,9 @@ static int tegra_dma_probe(struct platform_device *pdev)
>  static int tegra_dma_remove(struct platform_device *pdev)
>  {
>  	struct tegra_dma *tdma = platform_get_drvdata(pdev);
> -	int i;
> -	struct tegra_dma_channel *tdc;
>  
>  	dma_async_device_unregister(&tdma->dma_dev);
>  
> -	for (i = 0; i < tdma->chip_data->nr_channels; ++i) {
> -		tdc = &tdma->channels[i];
> -		free_irq(tdc->irq, tdc);
> -	}
> -
>  	pm_runtime_disable(&pdev->dev);
>  	if (!pm_runtime_status_suspended(&pdev->dev))
>  		tegra_dma_runtime_suspend(&pdev->dev);
> 

Acked-by: Jon Hunter <jonathanh@nvidia.com>

Cheers
Jon
diff mbox series

Patch

diff --git a/drivers/dma/tegra20-apb-dma.c b/drivers/dma/tegra20-apb-dma.c
index f44291207928..dff21e80ffa4 100644
--- a/drivers/dma/tegra20-apb-dma.c
+++ b/drivers/dma/tegra20-apb-dma.c
@@ -182,7 +182,6 @@  struct tegra_dma_channel {
 	char			name[12];
 	bool			config_init;
 	int			id;
-	int			irq;
 	void __iomem		*chan_addr;
 	spinlock_t		lock;
 	bool			busy;
@@ -1380,7 +1379,6 @@  static const struct tegra_dma_chip_data tegra148_dma_chip_data = {
 
 static int tegra_dma_probe(struct platform_device *pdev)
 {
-	struct resource *res;
 	struct tegra_dma *tdma;
 	int ret;
 	int i;
@@ -1446,25 +1444,27 @@  static int tegra_dma_probe(struct platform_device *pdev)
 	INIT_LIST_HEAD(&tdma->dma_dev.channels);
 	for (i = 0; i < cdata->nr_channels; i++) {
 		struct tegra_dma_channel *tdc = &tdma->channels[i];
+		int irq;
 
 		tdc->chan_addr = tdma->base_addr +
 				 TEGRA_APBDMA_CHANNEL_BASE_ADD_OFFSET +
 				 (i * cdata->channel_reg_size);
 
-		res = platform_get_resource(pdev, IORESOURCE_IRQ, i);
-		if (!res) {
-			ret = -EINVAL;
+		irq = platform_get_irq(pdev, i);
+		if (irq < 0) {
+			ret = irq;
 			dev_err(&pdev->dev, "No irq resource for chan %d\n", i);
-			goto err_irq;
+			goto err_pm_disable;
 		}
-		tdc->irq = res->start;
+
 		snprintf(tdc->name, sizeof(tdc->name), "apbdma.%d", i);
-		ret = request_irq(tdc->irq, tegra_dma_isr, 0, tdc->name, tdc);
+		ret = devm_request_irq(&pdev->dev, irq, tegra_dma_isr, 0,
+				       tdc->name, tdc);
 		if (ret) {
 			dev_err(&pdev->dev,
 				"request_irq failed with err %d channel %d\n",
 				ret, i);
-			goto err_irq;
+			goto err_pm_disable;
 		}
 
 		tdc->dma_chan.device = &tdma->dma_dev;
@@ -1517,7 +1517,7 @@  static int tegra_dma_probe(struct platform_device *pdev)
 	if (ret < 0) {
 		dev_err(&pdev->dev,
 			"Tegra20 APB DMA driver registration failed %d\n", ret);
-		goto err_irq;
+		goto err_pm_disable;
 	}
 
 	ret = of_dma_controller_register(pdev->dev.of_node,
@@ -1534,13 +1534,7 @@  static int tegra_dma_probe(struct platform_device *pdev)
 
 err_unregister_dma_dev:
 	dma_async_device_unregister(&tdma->dma_dev);
-err_irq:
-	while (--i >= 0) {
-		struct tegra_dma_channel *tdc = &tdma->channels[i];
-
-		free_irq(tdc->irq, tdc);
-	}
-
+err_pm_disable:
 	pm_runtime_disable(&pdev->dev);
 	if (!pm_runtime_status_suspended(&pdev->dev))
 		tegra_dma_runtime_suspend(&pdev->dev);
@@ -1550,16 +1544,9 @@  static int tegra_dma_probe(struct platform_device *pdev)
 static int tegra_dma_remove(struct platform_device *pdev)
 {
 	struct tegra_dma *tdma = platform_get_drvdata(pdev);
-	int i;
-	struct tegra_dma_channel *tdc;
 
 	dma_async_device_unregister(&tdma->dma_dev);
 
-	for (i = 0; i < tdma->chip_data->nr_channels; ++i) {
-		tdc = &tdma->channels[i];
-		free_irq(tdc->irq, tdc);
-	}
-
 	pm_runtime_disable(&pdev->dev);
 	if (!pm_runtime_status_suspended(&pdev->dev))
 		tegra_dma_runtime_suspend(&pdev->dev);