linux-kernel - Re: [PATCH v2 09/11] dmaengine: fsl_raid: Simplify with scoped for each OF child loop

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Message-ID: <aV0iVJgmqevN5UPV@lizhi-Precision-Tower-5810>
Date: Tue, 6 Jan 2026 09:55:16 -0500
From: Frank Li <Frank.li@....com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@....qualcomm.com>
Cc: Miguel Ojeda <ojeda@...nel.org>, Rob Herring <robh@...nel.org>,
	Saravana Kannan <saravanak@...gle.com>,
	Nathan Chancellor <nathan@...nel.org>,
	Nick Desaulniers <nick.desaulniers+lkml@...il.com>,
	Bill Wendling <morbo@...gle.com>,
	Justin Stitt <justinstitt@...gle.com>,
	Russell King <linux@...linux.org.uk>,
	Nicolas Ferre <nicolas.ferre@...rochip.com>,
	Alexandre Belloni <alexandre.belloni@...tlin.com>,
	Claudiu Beznea <claudiu.beznea@...on.dev>,
	Krzysztof Kozlowski <krzk@...nel.org>,
	Alim Akhtar <alim.akhtar@...sung.com>,
	Madhavan Srinivasan <maddy@...ux.ibm.com>,
	Michael Ellerman <mpe@...erman.id.au>,
	Nicholas Piggin <npiggin@...il.com>,
	"Christophe Leroy (CS GROUP)" <chleroy@...nel.org>,
	Nipun Gupta <nipun.gupta@....com>,
	Nikhil Agarwal <nikhil.agarwal@....com>,
	Abel Vesa <abelvesa@...nel.org>, Peng Fan <peng.fan@....com>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>, Vinod Koul <vkoul@...nel.org>,
	Sylwester Nawrocki <s.nawrocki@...sung.com>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Viresh Kumar <viresh.kumar@...aro.org>,
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
	llvm@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
	linux-clk@...r.kernel.org, imx@...ts.linux.dev,
	dmaengine@...r.kernel.org, linux-media@...r.kernel.org,
	linux-pm@...r.kernel.org
Subject: Re: [PATCH v2 09/11] dmaengine: fsl_raid: Simplify with scoped for
 each OF child loop

On Tue, Jan 06, 2026 at 10:15:19AM +0100, Krzysztof Kozlowski wrote:
> Use scoped for-each loop when iterating over device nodes to make code a
> bit simpler.
>
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@....qualcomm.com>

Reviewed-by: Frank Li <Frank.Li@....com>

>
> ---
>
> Depends on the first patch.
> ---
>  drivers/dma/fsl_raid.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
>
> diff --git a/drivers/dma/fsl_raid.c b/drivers/dma/fsl_raid.c
> index 6aa97e258a55..6e6d7e0e475e 100644
> --- a/drivers/dma/fsl_raid.c
> +++ b/drivers/dma/fsl_raid.c
> @@ -746,7 +746,6 @@ static int fsl_re_chan_probe(struct platform_device *ofdev,
>  static int fsl_re_probe(struct platform_device *ofdev)
>  {
>  	struct fsl_re_drv_private *re_priv;
> -	struct device_node *np;
>  	struct device_node *child;
>  	u32 off;
>  	u8 ridx = 0;
> @@ -823,11 +822,10 @@ static int fsl_re_probe(struct platform_device *ofdev)
>  	dev_set_drvdata(dev, re_priv);
>
>  	/* Parse Device tree to find out the total number of JQs present */
> -	for_each_compatible_node(np, NULL, "fsl,raideng-v1.0-job-queue") {
> +	for_each_compatible_node_scoped(np, NULL, "fsl,raideng-v1.0-job-queue") {
>  		rc = of_property_read_u32(np, "reg", &off);
>  		if (rc) {
>  			dev_err(dev, "Reg property not found in JQ node\n");
> -			of_node_put(np);
>  			return -ENODEV;
>  		}
>  		/* Find out the Job Rings present under each JQ */
>
> --
> 2.51.0
>