linux-kernel - Re: [PATCH 01/10] mfd/extcon: max77693: Remove unused extern declarations and max77693

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Date:	Mon, 04 May 2015 15:45:00 +0900
From:	Chanwoo Choi <cw00.choi@...sung.com>
To:	Krzysztof Kozlowski <k.kozlowski.k@...il.com>
Cc:	MyungJoo Ham <myungjoo.ham@...sung.com>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Lee Jones <lee.jones@...aro.org>,
	Sebastian Reichel <sre@...nel.org>,
	Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
	David Woodhouse <dwmw2@...radead.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>, linux-kernel@...r.kernel.org,
	linux-input@...r.kernel.org, linux-pm@...r.kernel.org
Subject: Re: [PATCH 01/10] mfd/extcon: max77693: Remove unused extern
 declarations and max77693_dev members

On 04/29/2015 07:58 PM, Krzysztof Kozlowski wrote:
> Clean up the max77693 private header file by removing:
> 1. Left-overs from previous way of interrupt handling (driver uses
>    regmap_irq_chip).
> 2. Unused members of struct 'max77693_dev' related to interrupts in
>    extcon driver.
> 
> Signed-off-by: Krzysztof Kozlowski <k.kozlowski.k@...il.com>
> ---
>  drivers/extcon/extcon-max77693.c     | 4 ----
>  include/linux/mfd/max77693-private.h | 8 --------
>  2 files changed, 12 deletions(-)
> 
> diff --git a/drivers/extcon/extcon-max77693.c b/drivers/extcon/extcon-max77693.c
> index a66bec8f6252..760e1e2cc1ce 100644
> --- a/drivers/extcon/extcon-max77693.c
> +++ b/drivers/extcon/extcon-max77693.c
> @@ -1218,10 +1218,6 @@ static int max77693_muic_probe(struct platform_device *pdev)
>  			irq_src = MUIC_INT3;
>  			break;
>  		}
> -
> -		if (irq_src < MAX77693_IRQ_GROUP_NR)
> -			info->max77693->irq_masks_cur[irq_src]
> -				= init_data[i].data;
>  	}

When removing the unused statement, I think you better to remove it as following:
because 'enum max77693_irq_source irq_src' is not used.

 	for (i = 0; i < num_init_data; i++) {
-		enum max77693_irq_source irq_src
-				= MAX77693_IRQ_GROUP_NR;
-
 		regmap_write(info->max77693->regmap_muic,
 				init_data[i].addr,
 				init_data[i].data);
-
-		switch (init_data[i].addr) {
-		case MAX77693_MUIC_REG_INTMASK1:
-			irq_src = MUIC_INT1;
-			break;
-		case MAX77693_MUIC_REG_INTMASK2:
-			irq_src = MUIC_INT2;
-			break;
-		case MAX77693_MUIC_REG_INTMASK3:
-			irq_src = MUIC_INT3;
-			break;
-		}
-
-		if (irq_src < MAX77693_IRQ_GROUP_NR)
-			info->max77693->irq_masks_cur[irq_src]
-				= init_data[i].data;
 	}
 
[snip]

Except for upper comment, Looks good to me.

Thanks,
Chanwoo Choi
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