linux-kernel - Re: [PATCH] Input: mt6779-keypad: Move iomem pointer to probe function

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <87czhu2xlf.fsf@baylibre.com>
Date:   Wed, 06 Apr 2022 14:41:16 +0200
From:   Mattijs Korpershoek <mkorpershoek@...libre.com>
To:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        dmitry.torokhov@...il.com
Cc:     matthias.bgg@...il.com, lv.ruyi@....com.cn,
        m.felsch@...gutronix.de, angelogioacchino.delregno@...labora.com,
        fengping.yu@...iatek.com, linux-input@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Input: mt6779-keypad: Move iomem pointer to probe function

On mer., avril 06, 2022 at 13:56, AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com> wrote:

> The mmio base address is used for the only purpose of initializing
> regmap for this driver, hence it's not necessary to have it in the
> main driver structure, as it is used only in the probe() callback.
> Move it local to function mt6779_keypad_pdrv_probe().
>
> This commit brings no functional changes.
>
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>

Thank you Angelo,

I planned to do this myself but I've been too slow :)

Reviewed-by: Mattijs Korpershoek <mkorpershoek@...libre.com>

> ---
>  drivers/input/keyboard/mt6779-keypad.c | 10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/input/keyboard/mt6779-keypad.c b/drivers/input/keyboard/mt6779-keypad.c
> index 0dbbddc7f298..2e7c9187c10f 100644
> --- a/drivers/input/keyboard/mt6779-keypad.c
> +++ b/drivers/input/keyboard/mt6779-keypad.c
> @@ -24,7 +24,6 @@ struct mt6779_keypad {
>  	struct regmap *regmap;
>  	struct input_dev *input_dev;
>  	struct clk *clk;
> -	void __iomem *base;
>  	u32 n_rows;
>  	u32 n_cols;
>  	DECLARE_BITMAP(keymap_state, MTK_KPD_NUM_BITS);
> @@ -91,6 +90,7 @@ static void mt6779_keypad_clk_disable(void *data)
>  static int mt6779_keypad_pdrv_probe(struct platform_device *pdev)
>  {
>  	struct mt6779_keypad *keypad;
> +	void __iomem *base;
>  	int irq;
>  	u32 debounce;
>  	bool wakeup;
> @@ -100,11 +100,11 @@ static int mt6779_keypad_pdrv_probe(struct platform_device *pdev)
>  	if (!keypad)
>  		return -ENOMEM;
>  
> -	keypad->base = devm_platform_ioremap_resource(pdev, 0);
> -	if (IS_ERR(keypad->base))
> -		return PTR_ERR(keypad->base);
> +	base = devm_platform_ioremap_resource(pdev, 0);
> +	if (IS_ERR(base))
> +		return PTR_ERR(base);
>  
> -	keypad->regmap = devm_regmap_init_mmio(&pdev->dev, keypad->base,
> +	keypad->regmap = devm_regmap_init_mmio(&pdev->dev, base,
>  					       &mt6779_keypad_regmap_cfg);
>  	if (IS_ERR(keypad->regmap)) {
>  		dev_err(&pdev->dev,
> -- 
> 2.35.1