Re: [PATCH] ata: sata_dwc_460ex: use platform_get_irq()

[Niklas Cassel <cassel@kernel.org>]

On Sun, Jun 28, 2026 at 04:03:10PM -0700, Rosen Penev wrote:
> Replace irq_of_parse_and_map() with platform_get_irq() in both
> sata_dwc_dma_init_old() and sata_dwc_probe(). This is the preferred
> way to obtain IRQs for platform devices and provides better error
> reporting.  Remove the now-unnecessary #include <linux/of_irq.h>.
> 
> irq_of_parse_and_map() requires irq_dispose_mapping(), which is missing.
> 
> Assisted-by: opencode:big-pickle
> Signed-off-by: Rosen Penev <rosenp@gmail.com>
> ---
>  drivers/ata/sata_dwc_460ex.c | 18 ++++++------------
>  1 file changed, 6 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/ata/sata_dwc_460ex.c b/drivers/ata/sata_dwc_460ex.c
> index 4fc22ce4bd9a..35aa7f9acdf7 100644
> --- a/drivers/ata/sata_dwc_460ex.c
> +++ b/drivers/ata/sata_dwc_460ex.c
> @@ -19,7 +19,6 @@
>  #include <linux/device.h>
>  #include <linux/dmaengine.h>
>  #include <linux/of.h>
> -#include <linux/of_irq.h>
>  #include <linux/platform_device.h>
>  #include <linux/phy/phy.h>
>  #include <linux/libata.h>
> @@ -226,7 +225,6 @@ static int sata_dwc_dma_init_old(struct platform_device *pdev,
>  				 struct sata_dwc_device *hsdev)
>  {
>  	struct device *dev = &pdev->dev;
> -	struct device_node *np = dev->of_node;

While this patch drops 'struct device_node *np = dev->of_node;' from
sata_dwc_dma_init_old() ...

>  
>  	hsdev->dma = devm_kzalloc(dev, sizeof(*hsdev->dma), GFP_KERNEL);
>  	if (!hsdev->dma)
> @@ -236,11 +234,9 @@ static int sata_dwc_dma_init_old(struct platform_device *pdev,
>  	hsdev->dma->id = pdev->id;
>  
>  	/* Get SATA DMA interrupt number */
> -	hsdev->dma->irq = irq_of_parse_and_map(np, 1);
> -	if (!hsdev->dma->irq) {
> -		dev_err(dev, "no SATA DMA irq\n");
> -		return -ENODEV;
> -	}
> +	hsdev->dma->irq = platform_get_irq(pdev, 1);
> +	if (hsdev->dma->irq < 0)
> +		return hsdev->dma->irq;
>  
>  	/* Get physical SATA DMA register base address */
>  	hsdev->dma->regs = devm_platform_ioremap_resource(pdev, 1);
> @@ -1173,11 +1169,9 @@ static int sata_dwc_probe(struct platform_device *ofdev)

it seems like you forgot to do the same for sata_dwc_probe().

Which results in a new warning:
https://lore.kernel.org/oe-kbuild-all/202606301243.9MrXM4WY-lkp@intel.com/T/#u

Damien, perhaps drop this patch and wait for a v2,
or fixup the patch to remove 'struct device_node *np = dev->of_node;'
also from sata_dwc_probe().


>  	sata_dwc_enable_interrupts(hsdev);
>  
>  	/* Get SATA interrupt number */
> -	irq = irq_of_parse_and_map(np, 0);
> -	if (!irq) {
> -		dev_err(dev, "no SATA DMA irq\n");
> -		return -ENODEV;
> -	}
> +	irq = platform_get_irq(ofdev, 0);
> +	if (irq < 0)
> +		return irq;
>  
>  #ifdef CONFIG_SATA_DWC_OLD_DMA
>  	if (!of_property_present(np, "dmas")) {
> -- 
> 2.54.0
>