linux-kernel - Re: [PATCH] fsi: master-ast-cf: Use of_reserved_mem_region_to

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Message-ID: <6e6b8559-fc16-4894-95c8-35669def48e2@linux.ibm.com>
Date: Tue, 8 Jul 2025 10:03:03 -0500
From: Eddie James <eajames@...ux.ibm.com>
To: "Rob Herring (Arm)" <robh@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-fsi@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        Ninad Palsule <ninad@...ux.ibm.com>
Subject: Re: [PATCH] fsi: master-ast-cf: Use
 of_reserved_mem_region_to_resource for "memory-region"


On 7/3/25 13:34, Rob Herring (Arm) wrote:
> Use the newly added of_reserved_mem_region_to_resource() function to
> handle "memory-region" properties.


Reviewed-by: Eddie James <eajames@...ux.ibm.com>

Thanks Rob.


>
> Signed-off-by: Rob Herring (Arm) <robh@...nel.org>
> ---
>   drivers/fsi/fsi-master-ast-cf.c | 11 ++---------
>   1 file changed, 2 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/fsi/fsi-master-ast-cf.c b/drivers/fsi/fsi-master-ast-cf.c
> index 9f2fd444ceb6..e67d7cd30fca 100644
> --- a/drivers/fsi/fsi-master-ast-cf.c
> +++ b/drivers/fsi/fsi-master-ast-cf.c
> @@ -13,13 +13,13 @@
>   #include <linux/irqflags.h>
>   #include <linux/module.h>
>   #include <linux/of.h>
> +#include <linux/of_reserved_mem.h>
>   #include <linux/platform_device.h>
>   #include <linux/slab.h>
>   #include <linux/regmap.h>
>   #include <linux/firmware.h>
>   #include <linux/gpio/aspeed.h>
>   #include <linux/mfd/syscon.h>
> -#include <linux/of_address.h>
>   #include <linux/genalloc.h>
>   
>   #include "fsi-master.h"
> @@ -1285,14 +1285,7 @@ static int fsi_master_acf_probe(struct platform_device *pdev)
>   	master->gpio_mux = gpio;
>   
>   	/* Grab the reserved memory region (use DMA API instead ?) */
> -	np = of_parse_phandle(mnode, "memory-region", 0);
> -	if (!np) {
> -		dev_err(&pdev->dev, "Didn't find reserved memory\n");
> -		rc = -EINVAL;
> -		goto err_free;
> -	}
> -	rc = of_address_to_resource(np, 0, &res);
> -	of_node_put(np);
> +	rc = of_reserved_mem_region_to_resource(mnode, 0, &res);
>   	if (rc) {
>   		dev_err(&pdev->dev, "Couldn't address to resource for reserved memory\n");
>   		rc = -ENOMEM;