linux-kernel - Re: [PATCH 3/3] mfd: sec: drop now unused struct sec_pmic_dev::irq

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Message-ID: <20251120103553.GZ1949330@google.com>
Date: Thu, 20 Nov 2025 10:35:53 +0000
From: Lee Jones <lee@...nel.org>
To: André Draszik <andre.draszik@...aro.org>
Cc: Krzysztof Kozlowski <krzk@...nel.org>,
	Alexandre Belloni <alexandre.belloni@...tlin.com>,
	Peter Griffin <peter.griffin@...aro.org>,
	Tudor Ambarus <tudor.ambarus@...aro.org>,
	Will McVicker <willmcvicker@...gle.com>,
	Juan Yescas <jyescas@...gle.com>,
	Douglas Anderson <dianders@...omium.org>, kernel-team@...roid.com,
	Kaustabh Chakraborty <kauschluss@...root.org>,
	linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
	linux-rtc@...r.kernel.org
Subject: Re: [PATCH 3/3] mfd: sec: drop now unused struct
 sec_pmic_dev::irq_data

On Fri, 14 Nov 2025, André Draszik wrote:

> This was used only to allow the s5m RTC driver to deal with the alarm
> IRQ. That driver now uses a different approach to acquire that IRQ, and
> ::irq_data doesn't need to be kept around anymore.
> 
> Signed-off-by: André Draszik <andre.draszik@...aro.org>
> ---
>  drivers/mfd/sec-common.c         |  5 +++--
>  drivers/mfd/sec-core.h           |  2 +-
>  drivers/mfd/sec-irq.c            | 10 ++--------
>  include/linux/mfd/samsung/core.h |  1 -
>  4 files changed, 6 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/mfd/sec-common.c b/drivers/mfd/sec-common.c
> index 77370db52a7ba81234136b29f85892f4b197f429..794c4e5398e7dd1a816aff9a6559a6c19fec75a5 100644
> --- a/drivers/mfd/sec-common.c
> +++ b/drivers/mfd/sec-common.c
> @@ -163,6 +163,7 @@ sec_pmic_parse_dt_pdata(struct device *dev)
>  int sec_pmic_probe(struct device *dev, int device_type, unsigned int irq,
>  		   struct regmap *regmap, struct i2c_client *client)
>  {
> +	struct regmap_irq_chip_data *irq_data;
>  	struct sec_platform_data *pdata;
>  	const struct mfd_cell *sec_devs;
>  	struct sec_pmic_dev *sec_pmic;
> @@ -187,7 +188,7 @@ int sec_pmic_probe(struct device *dev, int device_type, unsigned int irq,
>  
>  	sec_pmic->pdata = pdata;
>  
> -	ret = sec_irq_init(sec_pmic);
> +	ret = sec_irq_init(sec_pmic, &irq_data);
>  	if (ret)
>  		return ret;
>  
> @@ -240,7 +241,7 @@ int sec_pmic_probe(struct device *dev, int device_type, unsigned int irq,
>  				     sec_pmic->device_type);
>  	}
>  	ret = devm_mfd_add_devices(sec_pmic->dev, -1, sec_devs, num_sec_devs,
> -				   NULL, 0, regmap_irq_get_domain(sec_pmic->irq_data));
> +				   NULL, 0, regmap_irq_get_domain(irq_data));
>  	if (ret)
>  		return ret;
>  
> diff --git a/drivers/mfd/sec-core.h b/drivers/mfd/sec-core.h
> index 92c7558ab8b0de44a52e028eeb7998e38358cb4c..c639180ea686f4308af3f872cb1d2209d201b2e7 100644
> --- a/drivers/mfd/sec-core.h
> +++ b/drivers/mfd/sec-core.h
> @@ -18,6 +18,6 @@ int sec_pmic_probe(struct device *dev, int device_type, unsigned int irq,
>  		   struct regmap *regmap, struct i2c_client *client);
>  void sec_pmic_shutdown(struct device *dev);
>  
> -int sec_irq_init(struct sec_pmic_dev *sec_pmic);
> +int sec_irq_init(struct sec_pmic_dev *sec_pmic, struct regmap_irq_chip_data **irq_data);
>  
>  #endif /* __SEC_CORE_INT_H */
> diff --git a/drivers/mfd/sec-irq.c b/drivers/mfd/sec-irq.c
> index c5c80b1ba104e6c5a55b442d2f10a8554201a961..05d4cc350a351d994e00ba08f5ce966d0d5c6a0b 100644
> --- a/drivers/mfd/sec-irq.c
> +++ b/drivers/mfd/sec-irq.c
> @@ -253,7 +253,7 @@ static const struct regmap_irq_chip s5m8767_irq_chip = {
>  	.ack_base = S5M8767_REG_INT1,
>  };
>  
> -int sec_irq_init(struct sec_pmic_dev *sec_pmic)
> +int sec_irq_init(struct sec_pmic_dev *sec_pmic, struct regmap_irq_chip_data **irq_data)

Instead of passing around pointers to pointers, why not return irq_data
or NULL?

>  {
>  	const struct regmap_irq_chip *sec_irq_chip;
>  	int ret;
> @@ -302,17 +302,11 @@ int sec_irq_init(struct sec_pmic_dev *sec_pmic)
>  
>  	ret = devm_regmap_add_irq_chip(sec_pmic->dev, sec_pmic->regmap_pmic,
>  				       sec_pmic->irq, IRQF_ONESHOT,
> -				       0, sec_irq_chip, &sec_pmic->irq_data);
> +				       0, sec_irq_chip, irq_data);
>  	if (ret)
>  		return dev_err_probe(sec_pmic->dev, ret,
>  				     "Failed to add %s IRQ chip\n",
>  				     sec_irq_chip->name);
>  
> -	/*
> -	 * The rtc-s5m driver requests S2MPS14_IRQ_RTCA0 also for S2MPS11
> -	 * so the interrupt number must be consistent.
> -	 */
> -	BUILD_BUG_ON(((enum s2mps14_irq)S2MPS11_IRQ_RTCA0) != S2MPS14_IRQ_RTCA0);
> -
>  	return 0;
>  }
> diff --git a/include/linux/mfd/samsung/core.h b/include/linux/mfd/samsung/core.h
> index d785e101fe795a5d8f9cccf4ccc4232437e89416..c7c3c8cd8d5f99ef0cc3188e1c3b49031f4750f2 100644
> --- a/include/linux/mfd/samsung/core.h
> +++ b/include/linux/mfd/samsung/core.h
> @@ -69,7 +69,6 @@ struct sec_pmic_dev {
>  
>  	int device_type;
>  	int irq;
> -	struct regmap_irq_chip_data *irq_data;
>  };
>  
>  struct sec_platform_data {
> 
> -- 
> 2.52.0.rc1.455.g30608eb744-goog
> 

-- 
Lee Jones [李琼斯]