linux-kernel - Re: [PATCH v1 3/3] pwm: dwc: use to_pci

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Message-ID: <Zbnum_TLEGGlHWbp@black.fi.intel.com>
Date: Wed, 31 Jan 2024 08:54:52 +0200
From: Raag Jadav <raag.jadav@...el.com>
To: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
Cc: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	jarkko.nikula@...ux.intel.com, mika.westerberg@...ux.intel.com,
	lakshmi.sowjanya.d@...el.com, linux-pwm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 3/3] pwm: dwc: use to_pci_dev() helper

On Sun, Jan 28, 2024 at 05:55:00PM +0100, Uwe Kleine-König wrote:
> Hello,
> 
> On Sun, Jan 28, 2024 at 04:46:48PM +0200, Andy Shevchenko wrote:
> > On Mon, Jan 22, 2024 at 08:32:38AM +0530, Raag Jadav wrote:
> > > Use to_pci_dev() helper to get pci device reference.
> > 
> > PCI
> > 
> > ...
> > 
> > >  static int dwc_pwm_suspend(struct device *dev)
> > >  {
> > > -	struct pci_dev *pdev = container_of(dev, struct pci_dev, dev);
> > > +	struct pci_dev *pdev = to_pci_dev(dev);
> > >  	struct dwc_pwm *dwc = pci_get_drvdata(pdev);
> > >  	int i;
> > >  
> > > @@ -120,7 +120,7 @@ static int dwc_pwm_suspend(struct device *dev)
> > >  
> > >  static int dwc_pwm_resume(struct device *dev)
> > >  {
> > > -	struct pci_dev *pdev = container_of(dev, struct pci_dev, dev);
> > > +	struct pci_dev *pdev = to_pci_dev(dev);
> > >  	struct dwc_pwm *dwc = pci_get_drvdata(pdev);
> > >  	int i;
> > 
> > I don't see how pdev is being used. That said, why dev_get_drvdata() is not
> > suffice?
> 
> I would even consider using dev_get_drvdata() a nice cleanup given that
> pci_get_drvdata() works because dwc_pwm_alloc() called dev_set_drvdata()
> (and not pci_set_drvdata()).

Makes sense. Will update in v2.

Raag