[PATCH v8 1/3] PCI: portdrv: Add pcie_port_service_get_irq() function

[Bjorn Helgaas]

On Wed, Oct 28, 2020 at 10:31:41AM +0900, Kunihiko Hayashi wrote:
> Add pcie_port_service_get_irq() that returns the virtual IRQ number
> for specified portdrv service.
> 
> Cc: Lorenzo Pieralisi <lorenzo.pieralisi at arm.com>
> Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko at socionext.com>
> Reviewed-by: Rob Herring <robh at kernel.org>

I don't like portdrv and am sorry to add more uses of it, but I don't
have anything better, so:

Acked-by: Bjorn Helgaas <bhelgaas at google.com>

> ---
>  drivers/pci/pcie/portdrv.h      |  1 +
>  drivers/pci/pcie/portdrv_core.c | 16 ++++++++++++++++
>  2 files changed, 17 insertions(+)
> 
> diff --git a/drivers/pci/pcie/portdrv.h b/drivers/pci/pcie/portdrv.h
> index af7cf23..e256456 100644
> --- a/drivers/pci/pcie/portdrv.h
> +++ b/drivers/pci/pcie/portdrv.h
> @@ -150,4 +150,5 @@ static inline void pcie_pme_interrupt_enable(struct pci_dev *dev, bool en) {}
>  #endif /* !CONFIG_PCIE_PME */
>  
>  struct device *pcie_port_find_device(struct pci_dev *dev, u32 service);
> +int pcie_port_service_get_irq(struct pci_dev *dev, u32 service);
>  #endif /* _PORTDRV_H_ */
> diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c
> index 50a9522..f92daf8 100644
> --- a/drivers/pci/pcie/portdrv_core.c
> +++ b/drivers/pci/pcie/portdrv_core.c
> @@ -480,6 +480,22 @@ struct device *pcie_port_find_device(struct pci_dev *dev,
>  }
>  EXPORT_SYMBOL_GPL(pcie_port_find_device);
>  
> +/*
> + * pcie_port_service_get_irq - get irq of the service
> + * @dev: PCI Express port the service is associated with
> + * @service: For the service to find
> + *
> + * Get irq number associated with given service on a pci_dev
> + */
> +int pcie_port_service_get_irq(struct pci_dev *dev, u32 service)
> +{
> +	struct pcie_device *pciedev;
> +
> +	pciedev = to_pcie_device(pcie_port_find_device(dev, service));
> +
> +	return pciedev->irq;
> +}
> +
>  /**
>   * pcie_port_device_remove - unregister PCI Express port service devices
>   * @dev: PCI Express port the service devices to unregister are associated with
> -- 
> 2.7.4
> 
> 
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