linux-kernel - Re: [PATCH v2 1/7] iio: adc: palmas: remove adc_wakeupX

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Message-Id: <ED6919A6-CE57-4C31-9AE5-2C31D288A810@goldelico.com>
Date:   Mon, 3 Apr 2023 18:49:36 +0200
From:   "H. Nikolaus Schaller" <hns@...delico.com>
To:     Patrik Dahlström <risca@...akolonin.se>
Cc:     linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
        letux-kernel@...nphoenux.org, kernel@...a-handheld.com,
        pgoudagunta@...dia.com, jic23@...nel.org, lars@...afoo.de,
        linux-omap@...r.kernel.org
Subject: Re: [PATCH v2 1/7] iio: adc: palmas: remove adc_wakeupX_data

Hi Patrik,

> Am 02.04.2023 um 18:42 schrieb Patrik Dahlström <risca@...akolonin.se>:
> 
> It does not seem to be used by anyone and later patches in this series
> are made simpler by first removing this. There is now a lot of dead code
> that cannot be reached, until later patches revive it. Arguably, this is
> preferred over removing the code only to add it again.
> 
> Signed-off-by: Patrik Dahlström <risca@...akolonin.se>
> ---
> drivers/iio/adc/palmas_gpadc.c | 50 ++++------------------------------
> include/linux/mfd/palmas.h     |  8 ------
> 2 files changed, 6 insertions(+), 52 deletions(-)
> 
> diff --git a/drivers/iio/adc/palmas_gpadc.c b/drivers/iio/adc/palmas_gpadc.c
> index 24d7c096e4b8..943ac579eb1f 100644
> --- a/drivers/iio/adc/palmas_gpadc.c
> +++ b/drivers/iio/adc/palmas_gpadc.c
> @@ -76,6 +76,12 @@ static struct palmas_gpadc_info palmas_gpadc_info[] = {
> 	PALMAS_ADC_INFO(IN15, 0, 0, 0, 0, INVALID, INVALID, true),
> };
> 
> +struct palmas_adc_wakeup_property {
> +	int adc_channel_number;
> +	int adc_high_threshold;
> +	int adc_low_threshold;
> +};
> +
> /*
>  * struct palmas_gpadc - the palmas_gpadc structure
>  * @ch0_current:	channel 0 current source setting
> @@ -492,11 +498,6 @@ static int palmas_gpadc_get_adc_dt_data(struct platform_device *pdev,
> 	return 0;
> }
> 
> -static void palmas_disable_wakeup(void *dev)

something seems to be mixed up here.

There is no palmas_disable_wakeup() upstream that can be removed. So this patch
can not be applied as 1/7 to any upstream kernel.

Please rebase your series on either linus/master or linux-next/master.

BR,
Nikolaus

> -{
> -	device_wakeup_disable(dev);
> -}
> -
> static int palmas_gpadc_probe(struct platform_device *pdev)
> {
> 	struct palmas_gpadc *adc;
> @@ -547,36 +548,6 @@ static int palmas_gpadc_probe(struct platform_device *pdev)
> 		return dev_err_probe(adc->dev, ret,
> 				     "request irq %d failed\n", adc->irq);
> 
> -	if (gpadc_pdata->adc_wakeup1_data) {
> -		memcpy(&adc->wakeup1_data, gpadc_pdata->adc_wakeup1_data,
> -			sizeof(adc->wakeup1_data));
> -		adc->wakeup1_enable = true;
> -		adc->irq_auto_0 =  platform_get_irq(pdev, 1);
> -		ret = devm_request_threaded_irq(&pdev->dev, adc->irq_auto_0,
> -						NULL, palmas_gpadc_irq_auto,
> -						IRQF_ONESHOT,
> -						"palmas-adc-auto-0", adc);
> -		if (ret < 0)
> -			return dev_err_probe(adc->dev, ret,
> -					     "request auto0 irq %d failed\n",
> -					     adc->irq_auto_0);
> -	}
> -
> -	if (gpadc_pdata->adc_wakeup2_data) {
> -		memcpy(&adc->wakeup2_data, gpadc_pdata->adc_wakeup2_data,
> -				sizeof(adc->wakeup2_data));
> -		adc->wakeup2_enable = true;
> -		adc->irq_auto_1 =  platform_get_irq(pdev, 2);
> -		ret = devm_request_threaded_irq(&pdev->dev, adc->irq_auto_1,
> -						NULL, palmas_gpadc_irq_auto,
> -						IRQF_ONESHOT,
> -						"palmas-adc-auto-1", adc);
> -		if (ret < 0)
> -			return dev_err_probe(adc->dev, ret,
> -					     "request auto1 irq %d failed\n",
> -					     adc->irq_auto_1);
> -	}
> -
> 	/* set the current source 0 (value 0/5/15/20 uA => 0..3) */
> 	if (gpadc_pdata->ch0_current <= 1)
> 		adc->ch0_current = PALMAS_ADC_CH0_CURRENT_SRC_0;
> @@ -616,15 +587,6 @@ static int palmas_gpadc_probe(struct platform_device *pdev)
> 			palmas_gpadc_calibrate(adc, i);
> 	}
> 
> -	if (adc->wakeup1_enable || adc->wakeup2_enable) {
> -		device_wakeup_enable(&pdev->dev);
> -		ret = devm_add_action_or_reset(&pdev->dev,
> -					       palmas_disable_wakeup,
> -					       &pdev->dev);
> -		if (ret)
> -			return ret;
> -	}
> -
> 	return 0;
> }
> 
> diff --git a/include/linux/mfd/palmas.h b/include/linux/mfd/palmas.h
> index 1e61c7e9f50d..55f22adb1a9e 100644
> --- a/include/linux/mfd/palmas.h
> +++ b/include/linux/mfd/palmas.h
> @@ -129,12 +129,6 @@ struct palmas_pmic_driver_data {
> 			    struct regulator_config config);
> };
> 
> -struct palmas_adc_wakeup_property {
> -	int adc_channel_number;
> -	int adc_high_threshold;
> -	int adc_low_threshold;
> -};
> -
> struct palmas_gpadc_platform_data {
> 	/* Channel 3 current source is only enabled during conversion */
> 	int ch3_current;	/* 0: off; 1: 10uA; 2: 400uA; 3: 800 uA */
> @@ -153,8 +147,6 @@ struct palmas_gpadc_platform_data {
> 	int start_polarity;
> 
> 	int auto_conversion_period_ms;
> -	struct palmas_adc_wakeup_property *adc_wakeup1_data;
> -	struct palmas_adc_wakeup_property *adc_wakeup2_data;
> };
> 
> struct palmas_reg_init {
> -- 
> 2.25.1
>