linux-kernel - Re: [PATCH v10 1/3] PCI: portdrv: Add pcie_port_service_get

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Message-ID: <20210412094219.000031ca@Huawei.com>
Date:   Mon, 12 Apr 2021 09:42:19 +0100
From:   Jonathan Cameron <Jonathan.Cameron@...wei.com>
To:     Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>
CC:     Bjorn Helgaas <bhelgaas@...gle.com>, Rob Herring <robh@...nel.org>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Jingoo Han <jingoohan1@...il.com>,
        Gustavo Pimentel <gustavo.pimentel@...opsys.com>,
        Marc Zyngier <maz@...nel.org>, <linux-pci@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        "Jassi Brar" <jaswinder.singh@...aro.org>,
        Masami Hiramatsu <masami.hiramatsu@...aro.org>
Subject: Re: [PATCH v10 1/3] PCI: portdrv: Add pcie_port_service_get_irq()
 function

On Sat, 10 Apr 2021 01:22:16 +0900
Kunihiko Hayashi <hayashi.kunihiko@...ionext.com> wrote:

> Add pcie_port_service_get_irq() that returns the virtual IRQ number
> for specified portdrv service.

Trivial comment inline.

> 
> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@....com>
> Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>
> Reviewed-by: Rob Herring <robh@...nel.org>
> Acked-by: Bjorn Helgaas <bhelgaas@...gle.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 2ff5724..628a3de 100644
> --- a/drivers/pci/pcie/portdrv.h
> +++ b/drivers/pci/pcie/portdrv.h
> @@ -144,4 +144,5 @@ 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 e1fed664..b60f0f3 100644
> --- a/drivers/pci/pcie/portdrv_core.c
> +++ b/drivers/pci/pcie/portdrv_core.c
> @@ -477,7 +477,22 @@ struct device *pcie_port_find_device(struct pci_dev *dev,
>  }
>  EXPORT_SYMBOL_GPL(pcie_port_find_device);
>  
> +/*

/**

this is kernel-doc style, so why not mark it as such?


> + * 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