linux-kernel - Re: [PATCH v2 2/2] mfd: intel_quark_i2c

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Message-ID: <20210324102931.GH2916463@dell>
Date:   Wed, 24 Mar 2021 10:29:31 +0000
From:   Lee Jones <lee.jones@...aro.org>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/2] mfd: intel_quark_i2c_gpio: enable MSI interrupt

On Tue, 23 Mar 2021, Andy Shevchenko wrote:

> Allow interrupts to be MSI if supported by hardware.
> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> ---
> v2: new patch
>  drivers/mfd/intel_quark_i2c_gpio.c | 21 +++++++++++++++------
>  1 file changed, 15 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/mfd/intel_quark_i2c_gpio.c b/drivers/mfd/intel_quark_i2c_gpio.c
> index 52728a963c17..16ce9cb3aa2f 100644
> --- a/drivers/mfd/intel_quark_i2c_gpio.c
> +++ b/drivers/mfd/intel_quark_i2c_gpio.c
> @@ -169,8 +169,8 @@ static int intel_quark_i2c_setup(struct pci_dev *pdev, struct mfd_cell *cell)
>  	res[INTEL_QUARK_IORES_MEM].end =
>  		pci_resource_end(pdev, MFD_I2C_BAR);
>  
> -	res[INTEL_QUARK_IORES_IRQ].start = pdev->irq;
> -	res[INTEL_QUARK_IORES_IRQ].end = pdev->irq;
> +	res[INTEL_QUARK_IORES_IRQ].start = pci_irq_vector(pdev, 0);
> +	res[INTEL_QUARK_IORES_IRQ].end = pci_irq_vector(pdev, 0);
>  
>  	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
>  	if (!pdata)
> @@ -217,7 +217,7 @@ static int intel_quark_gpio_setup(struct pci_dev *pdev, struct mfd_cell *cell)
>  	pdata->properties->idx		= 0;
>  	pdata->properties->ngpio	= INTEL_QUARK_MFD_NGPIO;
>  	pdata->properties->gpio_base	= INTEL_QUARK_MFD_GPIO_BASE;
> -	pdata->properties->irq[0]	= pdev->irq;
> +	pdata->properties->irq[0]	= pci_irq_vector(pdev, 0);
>  
>  	cell->platform_data = pdata;
>  	cell->pdata_size = sizeof(*pdata);
> @@ -245,22 +245,30 @@ static int intel_quark_mfd_probe(struct pci_dev *pdev,
>  	if (ret)
>  		return ret;
>  
> +	pci_set_master(pdev);
> +
> +	ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES);

Is there any way these magic number can be defined or sizeof()'ed?

[...]

-- 
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
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