linux-kernel - Re: [v2 PATCH] PCI: aardvark: switch to using devm_gpiod_get_optional()

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Message-ID: <20221216182524.s6a4uihgavji7bti@pali>
Date:   Fri, 16 Dec 2022 19:25:24 +0100
From:   Pali Rohár <pali@...nel.org>
To:     Bjorn Helgaas <helgaas@...nel.org>
Cc:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>, linux-pci@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [v2 PATCH] PCI: aardvark: switch to using
 devm_gpiod_get_optional()

On Wednesday 07 December 2022 08:33:51 Bjorn Helgaas wrote:
> On Mon, Nov 14, 2022 at 10:42:25AM -0800, Dmitry Torokhov wrote:
> > Switch the driver to the generic version of gpiod API (and away from
> > OF-specific variant), so that we can stop exporting
> > devm_gpiod_get_from_of_node().
> > 
> > Acked-by: Pali Rohár <pali@...nel.org>
> > Reviewed-by: Linus Walleij <linus.walleij@...aro.org>
> > Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
> 
> This is unrelated to other pending aardvark changes and will help
> unblock the API removal, so I applied this to pci/ctrl/aardvark for
> v6.2, thanks!

I'm disappointed that such unimportant change is prioritized and taken
before any other important changes which are fixing real issue and
waiting for applying about half of year.

> > ---
> > 
> > v2:
> >  - collected reviewed-by/acked-by tags
> >  - updated commit description to remove incorrect assumption of why
> >    devm_gpiod_get_from_of_node() was used in the first place
> > 
> > This is the last user of devm_gpiod_get_from_of_node() in the mainline
> > (next), it would be great to have it in so that we can remove the API in
> > the next release cycle.
> > 
> > Thanks!
> > 
> > 
> >  drivers/pci/controller/pci-aardvark.c | 23 +++++++++++------------
> >  1 file changed, 11 insertions(+), 12 deletions(-)
> > 
> > diff --git a/drivers/pci/controller/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c
> > index ba36bbc5897d..5ecfac23c9fc 100644
> > --- a/drivers/pci/controller/pci-aardvark.c
> > +++ b/drivers/pci/controller/pci-aardvark.c
> > @@ -1859,20 +1859,19 @@ static int advk_pcie_probe(struct platform_device *pdev)
> >  		return ret;
> >  	}
> >  
> > -	pcie->reset_gpio = devm_gpiod_get_from_of_node(dev, dev->of_node,
> > -						       "reset-gpios", 0,
> > -						       GPIOD_OUT_LOW,
> > -						       "pcie1-reset");
> > +	pcie->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
> >  	ret = PTR_ERR_OR_ZERO(pcie->reset_gpio);
> >  	if (ret) {
> > -		if (ret == -ENOENT) {
> > -			pcie->reset_gpio = NULL;
> > -		} else {
> > -			if (ret != -EPROBE_DEFER)
> > -				dev_err(dev, "Failed to get reset-gpio: %i\n",
> > -					ret);
> > -			return ret;
> > -		}
> > +		if (ret != -EPROBE_DEFER)
> > +			dev_err(dev, "Failed to get reset-gpio: %i\n",
> > +				ret);
> > +		return ret;
> > +	}
> > +
> > +	ret = gpiod_set_consumer_name(pcie->reset_gpio, "pcie1-reset");
> > +	if (ret) {
> > +		dev_err(dev, "Failed to set reset gpio name: %d\n", ret);
> > +		return ret;
> >  	}
> >  
> >  	ret = of_pci_get_max_link_speed(dev->of_node);
> > -- 
> > 2.38.1.431.g37b22c650d-goog
> > 
> > 
> > -- 
> > Dmitry
> > 
> > _______________________________________________
> > linux-arm-kernel mailing list
> > linux-arm-kernel@...ts.infradead.org
> > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

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