linux-kernel - Re: [PATCH v1 2/3] pwm: dwc: simplify error handling

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Message-ID: <Zbt-6vpx1LnFBCIL@smile.fi.intel.com>
Date: Thu, 1 Feb 2024 13:22:18 +0200
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
Cc: Raag Jadav <raag.jadav@...el.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 2/3] pwm: dwc: simplify error handling

On Sun, Jan 28, 2024 at 05:58:38PM +0100, Uwe Kleine-König wrote:
> On Sun, Jan 28, 2024 at 04:48:16PM +0200, Andy Shevchenko wrote:
> > On Mon, Jan 22, 2024 at 08:32:37AM +0530, Raag Jadav wrote:
> > > Simplify error handling in ->probe() function using dev_err_probe() helper.

..

> > >  	ret = pcim_iomap_regions(pci, BIT(0), pci_name(pci));
> > > -	if (ret) {
> > > -		dev_err(dev, "Failed to iomap PCI BAR (%pe)\n", ERR_PTR(ret));
> > > -		return ret;
> > > -	}
> > > +	if (ret)
> > > +		return dev_err_probe(dev, ret, "Failed to iomap PCI BAR (%pe)\n", ERR_PTR(ret));
> > >  
> > >  	base = pcim_iomap_table(pci)[0];
> > 
> > > -	if (!base) {
> > > -		dev_err(dev, "Base address missing\n");
> > > -		return -ENOMEM;
> > > -	}
> > > +	if (!base)
> > > +		return dev_err_probe(dev, -ENOMEM, "Base address missing\n");
> > 
> > This check is bogus. Just remove it completely.
> 
> This would be a separate patch though. IMHO mechanically converting to
> dev_err_probe() is fine.

Sure, that's what I meant. First patch to remove, followed by dev_err_probe()
conversion.

-- 
With Best Regards,
Andy Shevchenko