linux-kernel - Re: [PATCH v3 1/5] mfd: intel_ehl_pse_gpio: Introduce Intel Elkhart Lake PSE GPIO and TIO

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Message-ID: <Z9Q7M1Cw8X0p9eXP@smile.fi.intel.com>
Date: Fri, 14 Mar 2025 16:20:35 +0200
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Lee Jones <lee@...nel.org>
Cc: Raag Jadav <raag.jadav@...el.com>, giometti@...eenne.com,
	gregkh@...uxfoundation.org, raymond.tan@...el.com,
	linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/5] mfd: intel_ehl_pse_gpio: Introduce Intel Elkhart
 Lake PSE GPIO and TIO

On Fri, Mar 14, 2025 at 01:57:35PM +0000, Lee Jones wrote:
> On Fri, 14 Mar 2025, Andy Shevchenko wrote:
> > On Fri, Mar 14, 2025 at 12:44:50PM +0000, Lee Jones wrote:
> > > On Fri, 07 Mar 2025, Raag Jadav wrote:

...

> > > > +	ret = pci_alloc_irq_vectors(pci, 2, 2, PCI_IRQ_ALL_TYPES);
> > > > +	if (ret < 0)
> > > > +		return ret;
> > > > +
> > > > +	ret = mfd_add_devices(&pci->dev, PLATFORM_DEVID_AUTO, ehl_pse_gpio_devs,
> > > 
> > > dev_*?
> > 
> > devm_* ?
> 
> Yes, typo.
> 
> > > > +			      ARRAY_SIZE(ehl_pse_gpio_devs), pci_resource_n(pci, 0),
> > > > +			      pci_irq_vector(pci, 0), NULL);
> > > > +	if (ret)
> > > > +		pci_free_irq_vectors(pci);
> > 
> > Anyway, the choice as far as I understood it is motivated by usage of
> > pci_*_irq_vector() APIs, which are officially not manageable (however
> > in practice they are).
> > 
> > > > +	return ret;
> > > > +}
> > > > +
> > > > +static void ehl_pse_gpio_remove(struct pci_dev *pdev)
> > > > +{
> > > > +	mfd_remove_devices(&pdev->dev);
> > > > +	pci_free_irq_vectors(pdev);
> > > > +}
> > 
> > Same here.
> 
> Also, Greg has been quite vocal about converting PCI devices to Platform
> ones in the past.  We may wish to run this past him before continuing.

What do you refer to? Any links to read?

-- 
With Best Regards,
Andy Shevchenko