Re: [PATCH 7/7] thermal: sun8i: Use scoped device node handling to simplify error paths

[Chen-Yu Tsai <wenst@chromium.org>]

On Wed, Aug 14, 2024 at 10:17:53PM +0200, Krzysztof Kozlowski wrote:
> Obtain the device node reference with scoped/cleanup.h to reduce error
> handling and make the code a bit simpler.
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>

> ---
>  drivers/thermal/sun8i_thermal.c | 11 +++++------
>  1 file changed, 5 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/thermal/sun8i_thermal.c b/drivers/thermal/sun8i_thermal.c
> index 3203d8bd13a8..22674790629a 100644
> --- a/drivers/thermal/sun8i_thermal.c
> +++ b/drivers/thermal/sun8i_thermal.c
> @@ -9,6 +9,7 @@
>   */
>  
>  #include <linux/bitmap.h>
> +#include <linux/cleanup.h>
>  #include <linux/clk.h>
>  #include <linux/device.h>
>  #include <linux/interrupt.h>
> @@ -348,19 +349,18 @@ static void sun8i_ths_reset_control_assert(void *data)
>  
>  static struct regmap *sun8i_ths_get_sram_regmap(struct device_node *node)
>  {
> -	struct device_node *sram_node;
>  	struct platform_device *sram_pdev;
>  	struct regmap *regmap = NULL;
>  
> -	sram_node = of_parse_phandle(node, "allwinner,sram", 0);
> +	struct device_node *sram_node __free(device_node) =
> +		of_parse_phandle(node, "allwinner,sram", 0);
>  	if (!sram_node)
>  		return ERR_PTR(-ENODEV);
>  
>  	sram_pdev = of_find_device_by_node(sram_node);
>  	if (!sram_pdev) {
>  		/* platform device might not be probed yet */
> -		regmap = ERR_PTR(-EPROBE_DEFER);
> -		goto out_put_node;
> +		return ERR_PTR(-EPROBE_DEFER);
>  	}
>  
>  	/* If no regmap is found then the other device driver is at fault */
> @@ -369,8 +369,7 @@ static struct regmap *sun8i_ths_get_sram_regmap(struct device_node *node)
>  		regmap = ERR_PTR(-EINVAL);
>  
>  	platform_device_put(sram_pdev);
> -out_put_node:
> -	of_node_put(sram_node);
> +
>  	return regmap;
>  }
>  
> 
> -- 
> 2.43.0
>