Re: [PATCH] rtc: sun6i: Use of_property_present() for testing DT property presence

From: Andre Przywara <andre.przywara@arm.com>
To: Rob Herring <robh@kernel.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>,
	Alexandre Belloni <alexandre.belloni@bootlin.com>,
	Chen-Yu Tsai <wens@csie.org>,
	Jernej Skrabec <jernej.skrabec@gmail.com>,
	Samuel Holland <samuel@sholland.org>,
	devicetree@vger.kernel.org, linux-rtc@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] rtc: sun6i: Use of_property_present() for testing DT property presence
Date: Mon, 13 Mar 2023 10:22:46 +0000	[thread overview]
Message-ID: <20230313102246.6a41d61e@slackpad.lan> (raw)
In-Reply-To: <20230310144736.1547041-1-robh@kernel.org>

On Fri, 10 Mar 2023 08:47:36 -0600
Rob Herring <robh@kernel.org> wrote:

> It is preferred to use typed property access functions (i.e.
> of_property_read_<type> functions) rather than low-level
> of_get_property/of_find_property functions for reading properties. As
> part of this, convert of_get_property/of_find_property calls to the
> recently added of_property_present() helper when we just want to test
> for presence of a property and nothing more.
> 
> Signed-off-by: Rob Herring <robh@kernel.org>

Reviewed-by: Andre Przywara <andre.przywara@arm.com>

Cheers,
Andre

> ---
>  drivers/rtc/rtc-sun6i.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/rtc/rtc-sun6i.c b/drivers/rtc/rtc-sun6i.c
> index 7038f47d77ff..dc76537f1b62 100644
> --- a/drivers/rtc/rtc-sun6i.c
> +++ b/drivers/rtc/rtc-sun6i.c
> @@ -260,7 +260,7 @@ static void __init sun6i_rtc_clk_init(struct device_node *node,
>  	}
>  
>  	/* Switch to the external, more precise, oscillator, if present */
> -	if (of_get_property(node, "clocks", NULL)) {
> +	if (of_property_present(node, "clocks")) {
>  		reg |= SUN6I_LOSC_CTRL_EXT_OSC;
>  		if (rtc->data->has_losc_en)
>  			reg |= SUN6I_LOSC_CTRL_EXT_LOSC_EN;