linux-kernel - Re: [NEW DRIVER V1 5/7] DA9058 GPIO driver

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Message-ID: <20120802101952.GG29157@opensource.wolfsonmicro.com>
Date:	Thu, 2 Aug 2012 11:19:52 +0100
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Anthony Olech <anthony.olech.opensource@...semi.com>
Cc:	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [NEW DRIVER V1 5/7] DA9058 GPIO driver

On Thu, Aug 02, 2012 at 09:48:57AM +0100, Anthony Olech wrote:

> +	mutex_lock(&gpio->lock);
> +	ret = da9058_reg_read(da9058, DA9058_STATUSC_REG, &gpio_level);
> +	mutex_unlock(&gpio->lock);

regmap already does locking for you.

> +	ret = da9058_reg_read(da9058, DA9058_GPIO0001_REG, &gpio_cntrl);
> +	if (ret)
> +		goto exit;
> +
> +	if (offset) {
> +		gpio_cntrl &= ~0xF0;
> +		gpio_cntrl |= 0xF0 & gpio->out_config;
> +
> +		ret = da9058_reg_write(da9058, DA9058_GPIO0001_REG, gpio_cntrl);

Just use regmap_update_bits().
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