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

From: Bjorn Helgaas <helgaas@kernel.org>
To: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: "Thomas Petazzoni" <thomas.petazzoni@bootlin.com>,
	"Lorenzo Pieralisi" <lpieralisi@kernel.org>,
	"Pali Rohár" <pali@kernel.org>, "Rob Herring" <robh@kernel.org>,
	"Krzysztof Wilczyński" <kw@linux.com>,
	"Bjorn Helgaas" <bhelgaas@google.com>,
	linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: Re: [v2 PATCH] PCI: aardvark: switch to using devm_gpiod_get_optional()
Date: Wed, 7 Dec 2022 08:33:51 -0600	[thread overview]
Message-ID: <20221207143351.GA1439513@bhelgaas> (raw)
In-Reply-To: <Y3KMEZFv6dpxA+Gv@google.com>

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@kernel.org>
> Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.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!

> ---
> 
> 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@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel